MASTER Net MASTER Database: GRB210528.95 page

Please use the reference to MASTER DataBase as Lipunov et al., 2010, MASTER Robotic Net, Advances in Astronomy, vol. 2010, p.30L

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GRB coord: ErrorBox (deg): Sys Error (deg):
Sattel : Trigger: Notice:
GRB_Name: trignum: Nights after: FullSky


Name MAXI GRB210528.95
Trignum 362758075
Trigger time 2021-05-28 22:51:55
Notice time 2021-05-29 00:10:12.400795
Coord, eb (15h 58m 09.36s , +05d 58m 58.8s) , 1
Max dist: 1 sigma 3 sigma
AGN candidates: Milliquas
r90wise
wiseXgaia
BL Lac candidates: 1 Sigma
3 Sigma

MASTER observatories and transients from them in error-field
Kislovodsk Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Amur Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Tunka Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
OAFA Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
IAC Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
SAAO Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Tavrida Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
OAGH Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)

All alerts for this trigger
id noticetime coord2000 satel errorbox type trigger seq trig_type links
1623582 2021-05-29 00:10:25.650403 15h 58m 09.36s +05d 58m 58.8s MAXI 1 alert 362758075 3 134 alert

DAYS:

MASTER optical transients in this field
Will be published in GCN, ATEL

Synchronous WFC images
Distance datetime coord2000 observatory camera links
75.7 2021-05-28 22:49:42.306 11h 40m 54.00s -42d 30m 59.0s IAC 100627 Database IAC
75.0 2021-05-28 22:50:23.815 11h 40m 44.00s -40d 36m 58.0s IAC 111343 Database IAC
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2021-05-28 22:51:55 (JD 2459363.452720)

Siderial time 17.819704 h

Ra 15:58:09.36 Dec 05:58:58.80
(239.539000d, 5.983000d)

Rise 2021-05-29 17:18:50

Transit 2021-05-29 23:57:15

Set 2021-05-29 06:39:38

Amur

Object: Altitude: -12.37 Azimuth: 115.56

Sun: Altitude: 30.00 Azimuth: 271.78

Moon: Altitude: -9.80 Azimuth: 61.32

Tunka

Object: Altitude: 2.73 Azimuth: 96.22

Sun: Altitude: 15.01 Azimuth: 254.06

Moon: Altitude: 1.39 Azimuth: 42.99

Kislovodsk

Object: Altitude: 42.60 Azimuth: 46.82

Sun: Altitude: -20.31 Azimuth: 206.24

Moon: Altitude: 19.81 Azimuth: 349.08

Tavrida

Object: Altitude: 45.89 Azimuth: 35.79

Sun: Altitude: -21.70 Azimuth: 197.99

Moon: Altitude: 17.30 Azimuth: 341.24

SAAO

Object: Altitude: 50.25 Azimuth: 162.82

Sun: Altitude: -78.39 Azimuth: 337.42

Moon: Altitude: 60.39 Azimuth: 265.52

IAC

Object: Altitude: 56.51 Azimuth: 306.81

Sun: Altitude: -31.06 Azimuth: 144.26

Moon: Altitude: 3.46 Azimuth: 301.69

Argentina

Object: Altitude: 5.95 Azimuth: 259.17

Sun: Altitude: -14.92 Azimuth: 106.40

Moon: Altitude: -11.07 Azimuth: 309.82

Mexico

Object: Altitude: -22.05 Azimuth: 247.97

Sun: Altitude: 41.51 Azimuth: 92.30

Moon: Altitude: -75.20 Azimuth: 252.53

Ural

Object: Altitude: 25.95 Azimuth: 57.49

Sun: Altitude: -3.36 Azimuth: 219.88

Moon: Altitude: 7.17 Azimuth: 5.09

Vostryakovo

Object: Altitude: 35.80 Azimuth: 35.08

Sun: Altitude: -10.84 Azimuth: 200.55

Moon: Altitude: 7.79 Azimuth: 345.37

Gal. latitude: 40.307809 Gal. longitude: 16.395826

Dist. to Sun: 151.788430

Dist. to Moon: 53.203927

Moon coord.: (283.609347 d, -25.659476 d)

Sun coord.: (65.721697 d, 21.569458 d)

Lunar disk: 0.910790

Lunar phase: 34.756714

Lunar bright limb: 88.491265

No SN in this field

2021-05-29 00:10:12 (JD 2459363.507083)

Siderial time 19.127998 h

Ra 15:58:09.36 Dec 05:58:58.80
(239.539000d, 5.983000d)

Rise 2021-05-29 17:18:50

Transit 2021-05-29 23:57:15

Set 2021-05-29 06:39:38

Amur

Object: Altitude: -22.71 Azimuth: 132.95

Sun: Altitude: 42.27 Azimuth: 288.50

Moon: Altitude: -20.86 Azimuth: 74.57

Tunka

Object: Altitude: -9.01 Azimuth: 111.86

Sun: Altitude: 26.95 Azimuth: 268.80

Moon: Altitude: -7.49 Azimuth: 57.39

Kislovodsk

Object: Altitude: 30.77 Azimuth: 66.30

Sun: Altitude: -12.24 Azimuth: 223.24

Moon: Altitude: 20.28 Azimuth: 7.05

Tavrida

Object: Altitude: 35.70 Azimuth: 57.92

Sun: Altitude: -15.37 Azimuth: 215.99

Moon: Altitude: 19.62 Azimuth: 358.88

SAAO

Object: Altitude: 41.86 Azimuth: 137.22

Sun: Altitude: -65.85 Azimuth: 290.49

Moon: Altitude: 75.76 Azimuth: 245.47

IAC

Object: Altitude: 66.79 Azimuth: 342.76

Sun: Altitude: -38.57 Azimuth: 164.50

Moon: Altitude: 16.67 Azimuth: 312.40

Argentina

Object: Altitude: 21.92 Azimuth: 247.56

Sun: Altitude: -31.18 Azimuth: 97.50

Moon: Altitude: 2.07 Azimuth: 299.16

Mexico

Object: Altitude: -5.93 Azimuth: 259.35

Sun: Altitude: 24.88 Azimuth: 101.18

Moon: Altitude: -59.35 Azimuth: 268.56

Ural

Object: Altitude: 16.18 Azimuth: 75.64

Sun: Altitude: 4.55 Azimuth: 236.27

Moon: Altitude: 4.80 Azimuth: 21.90

Vostryakovo

Object: Altitude: 27.84 Azimuth: 56.12

Sun: Altitude: -5.40 Azimuth: 218.09

Moon: Altitude: 8.94 Azimuth: 2.39

Gal. latitude: 40.307809 Gal. longitude: 16.395826

Dist. to Sun: 151.768438

Dist. to Moon: 53.884072

Moon coord.: (284.489205 d, -25.644665 d)

Sun coord.: (65.777003 d, 21.577972 d)

Lunar disk: 0.907075

Lunar phase: 35.496546

Lunar bright limb: 88.130059

No SN in this field

2021-05-29 01:10:12 (JD 2459363.548750)

Siderial time 20.130736 h

Ra 15:58:09.36 Dec 05:58:58.80
(239.539000d, 5.983000d)

Rise 2021-05-29 17:18:50

Transit 2021-05-29 23:57:15

Set 2021-05-29 06:39:38

Amur

Object: Altitude: -28.81 Azimuth: 148.14

Sun: Altitude: 50.84 Azimuth: 304.58

Moon: Altitude: -29.87 Azimuth: 84.89

Tunka

Object: Altitude: -17.19 Azimuth: 124.73

Sun: Altitude: 36.18 Azimuth: 281.10

Moon: Altitude: -15.35 Azimuth: 67.88

Kislovodsk

Object: Altitude: 20.43 Azimuth: 78.32

Sun: Altitude: -4.06 Azimuth: 234.66

Moon: Altitude: 17.82 Azimuth: 20.50

Tavrida

Object: Altitude: 26.05 Azimuth: 71.28

Sun: Altitude: -8.22 Azimuth: 228.23

Moon: Altitude: 18.61 Azimuth: 12.54

SAAO

Object: Altitude: 32.12 Azimuth: 122.94

Sun: Altitude: -53.55 Azimuth: 277.20

Moon: Altitude: 83.25 Azimuth: 180.07

IAC

Object: Altitude: 66.34 Azimuth: 20.95

Sun: Altitude: -40.08 Azimuth: 182.45

Moon: Altitude: 25.22 Azimuth: 322.82

Argentina

Object: Altitude: 33.21 Azimuth: 236.46

Sun: Altitude: -43.89 Azimuth: 90.23

Moon: Altitude: 13.06 Azimuth: 292.25

Mexico

Object: Altitude: 6.86 Azimuth: 267.13

Sun: Altitude: 12.45 Azimuth: 107.87

Moon: Altitude: -47.05 Azimuth: 275.41

Ural

Object: Altitude: 8.09 Azimuth: 88.52

Sun: Altitude: 11.77 Azimuth: 248.33

Moon: Altitude: 1.14 Azimuth: 34.34

Vostryakovo

Object: Altitude: 20.22 Azimuth: 70.24

Sun: Altitude: 0.57 Azimuth: 230.71

Moon: Altitude: 7.69 Azimuth: 15.42

Gal. latitude: 40.307809 Gal. longitude: 16.395826

Dist. to Sun: 151.753064

Dist. to Moon: 54.406078

Moon coord.: (285.162474 d, -25.629769 d)

Sun coord.: (65.819396 d, 21.584485 d)

Lunar disk: 0.904186

Lunar phase: 36.062766

Lunar bright limb: 87.853329

No SN in this field

2024-12-24 00:07:22 (JD 2460668.505116)

Siderial time 8.831968 h

Ra 15:58:09.36 Dec 05:58:58.80
(239.539000d, 5.983000d)

Rise 2024-12-24 03:36:00

Transit 2024-12-24 10:14:26

Set 2024-12-24 16:52:52

Amur

Object: Altitude: 43.38 Azimuth: 336.14

Sun: Altitude: 3.97 Azimuth: 315.05

Moon: Altitude: 27.58 Azimuth: 34.04

Tunka

Object: Altitude: 32.80 Azimuth: 308.21

Sun: Altitude: -9.31 Azimuth: 296.31

Moon: Altitude: 31.53 Azimuth: 6.47

Kislovodsk

Object: Altitude: -4.54 Azimuth: 257.24

Sun: Altitude: -48.14 Azimuth: 255.90

Moon: Altitude: 19.50 Azimuth: 300.29

Tavrida

Object: Altitude: -10.13 Azimuth: 250.97

Sun: Altitude: -53.59 Azimuth: 246.40

Moon: Altitude: 13.63 Azimuth: 293.79

SAAO

Object: Altitude: -31.59 Azimuth: 284.19

Sun: Altitude: -29.98 Azimuth: 335.40

Moon: Altitude: 14.67 Azimuth: 268.39

IAC

Object: Altitude: -51.21 Azimuth: 210.80

Sun: Altitude: -76.36 Azimuth: 107.70

Moon: Altitude: -24.19 Azimuth: 264.17

Argentina

Object: Altitude: -49.08 Azimuth: 58.12

Sun: Altitude: -5.47 Azimuth: 58.04

Moon: Altitude: -49.72 Azimuth: 339.53

Mexico

Object: Altitude: -9.55 Azimuth: 102.98

Sun: Altitude: 2.21 Azimuth: 60.82

Moon: Altitude: -54.13 Azimuth: 127.46

Ural

Object: Altitude: 7.66 Azimuth: 270.81

Sun: Altitude: -34.68 Azimuth: 259.73

Moon: Altitude: 19.37 Azimuth: 319.60

Vostryakovo

Object: Altitude: -4.48 Azimuth: 252.69

Sun: Altitude: -46.52 Azimuth: 239.29

Moon: Altitude: 11.07 Azimuth: 299.04

Gal. latitude: 40.307809 Gal. longitude: 16.395826

Dist. to Sun: 43.614324

Dist. to Moon: 48.680029

Moon coord.: (192.384134 d, -6.469573 d)

Sun coord.: (272.528404 d, -23.426505 d)

Lunar disk: 0.400846

Lunar phase: 101.438025

Lunar bright limb: 112.663401

No SN in this field
Recent coverage and limits telegrams

 #######################################################################################
#######################################################################################

  ID = 4334
TYPE = 35
DAYS = 1


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the MAXI GRB210528.95 (trigger No 362758075,15h 58m 09.36s , +05d 58m 58.8s, R=1) errorbox  10 sec after notice time and 4707 sec after trigger time at 2021-05-29 00:10:22 UT, with upper limit up to  19.0 mag. The observations began at zenith distance = 23 deg. The sun  altitude  is -39.0 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the MAXI GRB210528.95 errorbox  41 sec after notice time and 4739 sec after trigger time at 2021-05-29 00:10:54 UT, with upper limit up to  18.6 mag. The observations began at zenith distance = 67 deg. The sun  altitude  is -31.5 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the MAXI GRB210528.95 errorbox  99 sec after notice time and 4797 sec after trigger time at 2021-05-29 00:11:52 UT, with upper limit up to  17.0 mag. Observations started at twilight.  The observations began at zenith distance = 59 deg. The sun  altitude  is -12.8 deg. 

The galactic latitude b = 40 deg., longitude l = 16 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1623577

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 57m 01.56s , +06d 02m 14.3s) |  P| |   180 | 18.5 |        
    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 56m 10.28s , +06d 08m 43.9s) |  P- |   180 | 18.3 |        
    4829 | 2021-05-29 00:10:54 |         MASTER-OAFA | (15h 55m 55.05s , +06d 44m 13.2s) |   C |   180 | 17.2 |        
    4887 | 2021-05-29 00:11:52 |   MASTER-Kislovodsk | (15h 58m 31.56s , +06d 01m 21.0s) |   C |   180 | 17.0 |        
    4887 | 2021-05-29 00:11:52 |   MASTER-Kislovodsk | (15h 58m 38.08s , +06d 25m 28.6s) |  P| |   180 | 16.8 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 57m 09.19s , +06d 02m 16.4s) |  P| |   180 | 18.7 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 56m 17.67s , +06d 08m 46.0s) |  P- |   180 | 18.3 |        
    5029 | 2021-05-29 00:14:13 |         MASTER-OAFA | (15h 56m 03.41s , +06d 44m 18.9s) |   C |   180 | 17.4 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 57m 06.12s , +06d 03m 54.3s) |  P| |   180 | 18.7 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 56m 14.54s , +06d 10m 23.3s) |  P- |   180 | 18.4 |        
    5228 | 2021-05-29 00:17:32 |         MASTER-OAFA | (15h 56m 00.74s , +06d 46m 16.0s) |   C |   180 | 17.4 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 57m 06.18s , +06d 02m 37.0s) |  P| |   180 | 18.8 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 56m 14.59s , +06d 09m 05.6s) |  P- |   180 | 18.4 |        
    5427 | 2021-05-29 00:20:52 |         MASTER-OAFA | (15h 56m 01.56s , +06d 44m 40.6s) |   C |   180 | 17.5 |        
    6412 | 2021-05-29 00:37:16 |          MASTER-IAC | (16h 00m 44.15s , +06d 03m 14.2s) |   C |   180 | 18.9 |        
    6412 | 2021-05-29 00:37:16 |          MASTER-IAC | (15h 52m 34.12s , +06d 09m 05.2s) |   C |   180 | 19.0 |        
    6821 | 2021-05-29 00:44:06 |          MASTER-IAC | (16h 00m 45.01s , +06d 01m 17.4s) |   C |   180 | 19.0 |        
    6821 | 2021-05-29 00:44:06 |          MASTER-IAC | (15h 52m 34.64s , +06d 07m 08.7s) |   C |   180 | 18.9 |        
    7228 | 2021-05-29 00:50:53 |          MASTER-IAC | (16h 00m 47.52s , +06d 02m 52.2s) |   C |   180 | 19.0 |        
    7228 | 2021-05-29 00:50:53 |          MASTER-IAC | (15h 52m 36.91s , +06d 08m 43.6s) |   C |   180 | 19.0 |        
    7574 | 2021-05-29 00:57:39 |          MASTER-IAC | (16h 03m 55.79s , +05d 03m 39.5s) |   C |    60 | 18.5 |        
    7574 | 2021-05-29 00:57:39 |          MASTER-IAC | (15h 55m 45.96s , +05d 09m 31.7s) |   C |    60 | 18.3 |        
    7654 | 2021-05-29 00:58:59 |          MASTER-IAC | (16h 07m 11.20s , +06d 57m 04.1s) |   C |    60 | 18.4 |        
    7654 | 2021-05-29 00:58:59 |          MASTER-IAC | (15h 58m 59.35s , +07d 02m 57.7s) |   C |    60 | 18.3 |        
    8620 | 2021-05-29 01:15:05 |          MASTER-IAC | (16h 03m 48.79s , +05d 03m 57.3s) |   C |    60 | 18.4 |        
    8620 | 2021-05-29 01:15:05 |          MASTER-IAC | (15h 55m 38.82s , +05d 09m 50.9s) |   C |    60 | 18.4 |        
    8700 | 2021-05-29 01:16:24 |          MASTER-IAC | (16h 07m 17.45s , +06d 56m 53.0s) |   C |    60 | 18.4 |        
    8700 | 2021-05-29 01:16:24 |          MASTER-IAC | (15h 59m 05.60s , +07d 02m 46.8s) |   C |    60 | 18.3 |        
    9659 | 2021-05-29 01:32:24 |          MASTER-IAC | (16h 03m 48.35s , +05d 01m 47.9s) |   C |    60 | 18.4 |        
    9659 | 2021-05-29 01:32:24 |          MASTER-IAC | (15h 55m 38.69s , +05d 07m 40.9s) |   C |    60 | 18.3 |        
    9739 | 2021-05-29 01:33:44 |          MASTER-IAC | (16h 07m 15.92s , +06d 55m 46.9s) |   C |    60 | 18.4 |        
    9739 | 2021-05-29 01:33:44 |          MASTER-IAC | (15h 59m 04.36s , +07d 01m 40.4s) |   C |    60 | 18.3 |        
   13978 | 2021-05-29 02:43:22 |          MASTER-IAC | (15h 58m 06.11s , +06d 02m 43.8s) |   C |   180 | 19.0 |        
   13978 | 2021-05-29 02:43:22 |          MASTER-IAC | (15h 57m 12.48s , +06d 09m 30.1s) |   C |   180 | 18.8 |        
   14178 | 2021-05-29 02:46:42 |          MASTER-IAC | (15h 58m 06.11s , +06d 01m 30.0s) |   C |   180 | 19.0 |        
   14178 | 2021-05-29 02:46:42 |          MASTER-IAC | (15h 57m 12.58s , +06d 08m 16.9s) |   C |   180 | 18.8 |        
   14379 | 2021-05-29 02:50:04 |          MASTER-IAC | (15h 58m 39.01s , +06d 15m 37.7s) |   C |   180 | 19.0 |        
   14379 | 2021-05-29 02:50:04 |          MASTER-IAC | (15h 57m 45.33s , +06d 22m 24.2s) |   C |   180 | 18.8 |        
   17966 | 2021-05-29 03:49:51 |          MASTER-IAC | (15h 58m 31.43s , +06d 15m 27.5s) |   C |   180 | 18.3 |        
   17966 | 2021-05-29 03:49:51 |          MASTER-IAC | (15h 57m 36.69s , +06d 22m 16.5s) |   C |   180 | 18.2 |        
   22199 | 2021-05-29 05:00:24 |         MASTER-OAFA | (15h 55m 54.42s , +06d 42m 48.4s) |   C |   180 | 18.6 |        
   22347 | 2021-05-29 05:03:51 |         MASTER-OAFA | (15h 55m 02.62s , +05d 45m 34.4s) |   C |    60 | 18.3 |        
   23042 | 2021-05-29 05:15:27 |         MASTER-OAFA | (16h 03m 00.58s , +05d 45m 23.5s) |   C |    60 | 17.9 |        
   24039 | 2021-05-29 05:31:03 |         MASTER-OAFA | (15h 56m 01.51s , +05d 22m 41.0s) |   C |   180 | 18.6 |        
   25007 | 2021-05-29 05:48:11 |         MASTER-OAFA | (15h 55m 06.55s , +04d 23m 38.6s) |   C |    60 | 18.0 |        
   28949 | 2021-05-29 06:53:54 |         MASTER-OAFA | (16h 03m 08.19s , +04d 23m 19.0s) |   C |    60 | 17.8 |        
   29779 | 2021-05-29 07:06:44 |         MASTER-OAFA | (15h 56m 07.85s , +05d 21m 21.2s) |   C |   180 | 18.5 |        
   30929 | 2021-05-29 07:26:54 |         MASTER-OAFA | (15h 55m 04.96s , +04d 23m 15.5s) |   C |    60 | 17.8 |        
   31013 | 2021-05-29 07:28:18 |         MASTER-OAFA | (16h 03m 14.46s , +04d 22m 07.1s) |   C |    60 | 17.6 |        
   31094 | 2021-05-29 07:29:38 |         MASTER-OAFA | (15h 58m 31.78s , +06d 15m 23.9s) |   C |    60 | 17.7 |        
   31388 | 2021-05-29 07:34:33 |         MASTER-OAFA | (16h 06m 28.59s , +06d 16m 59.5s) |   C |    60 | 17.5 |        
   32106 | 2021-05-29 07:46:31 |         MASTER-OAFA | (15h 58m 28.27s , +06d 14m 54.6s) |   C |    60 | 17.7 |        
   32419 | 2021-05-29 07:51:44 |         MASTER-OAFA | (16h 06m 28.05s , +06d 15m 38.9s) |   C |    60 | 17.6 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 4328
TYPE = 35
DAYS = 0.5


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the MAXI GRB210528.95 (trigger No 362758075,15h 58m 09.36s , +05d 58m 58.8s, R=1) errorbox  10 sec after notice time and 4707 sec after trigger time at 2021-05-29 00:10:22 UT, with upper limit up to  19.0 mag. The observations began at zenith distance = 23 deg. The sun  altitude  is -39.0 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the MAXI GRB210528.95 errorbox  41 sec after notice time and 4739 sec after trigger time at 2021-05-29 00:10:54 UT, with upper limit up to  18.6 mag. The observations began at zenith distance = 67 deg. The sun  altitude  is -31.5 deg. 

The galactic latitude b = 40 deg., longitude l = 16 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1623577

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 57m 01.56s , +06d 02m 14.3s) |  P| |   180 | 18.5 |        
    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 56m 10.28s , +06d 08m 43.9s) |  P- |   180 | 18.3 |        
    4829 | 2021-05-29 00:10:54 |         MASTER-OAFA | (15h 55m 55.05s , +06d 44m 13.2s) |   C |   180 | 17.2 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 57m 09.19s , +06d 02m 16.4s) |  P| |   180 | 18.7 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 56m 17.67s , +06d 08m 46.0s) |  P- |   180 | 18.3 |        
    5029 | 2021-05-29 00:14:13 |         MASTER-OAFA | (15h 56m 03.41s , +06d 44m 18.9s) |   C |   180 | 17.4 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 57m 06.12s , +06d 03m 54.3s) |  P| |   180 | 18.7 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 56m 14.54s , +06d 10m 23.3s) |  P- |   180 | 18.4 |        
    5228 | 2021-05-29 00:17:32 |         MASTER-OAFA | (15h 56m 00.74s , +06d 46m 16.0s) |   C |   180 | 17.4 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 57m 06.18s , +06d 02m 37.0s) |  P| |   180 | 18.8 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 56m 14.59s , +06d 09m 05.6s) |  P- |   180 | 18.4 |        
    5427 | 2021-05-29 00:20:52 |         MASTER-OAFA | (15h 56m 01.56s , +06d 44m 40.6s) |   C |   180 | 17.5 |        
    6412 | 2021-05-29 00:37:16 |          MASTER-IAC | (16h 00m 44.15s , +06d 03m 14.2s) |   C |   180 | 18.9 |        
    6412 | 2021-05-29 00:37:16 |          MASTER-IAC | (15h 52m 34.12s , +06d 09m 05.2s) |   C |   180 | 19.0 |        
    6821 | 2021-05-29 00:44:06 |          MASTER-IAC | (16h 00m 45.01s , +06d 01m 17.4s) |   C |   180 | 19.0 |        
    6821 | 2021-05-29 00:44:06 |          MASTER-IAC | (15h 52m 34.64s , +06d 07m 08.7s) |   C |   180 | 18.9 |        
    7228 | 2021-05-29 00:50:53 |          MASTER-IAC | (16h 00m 47.52s , +06d 02m 52.2s) |   C |   180 | 19.0 |        
    7228 | 2021-05-29 00:50:53 |          MASTER-IAC | (15h 52m 36.91s , +06d 08m 43.6s) |   C |   180 | 19.0 |        
    7574 | 2021-05-29 00:57:39 |          MASTER-IAC | (16h 03m 55.79s , +05d 03m 39.5s) |   C |    60 | 18.5 |        
    7574 | 2021-05-29 00:57:39 |          MASTER-IAC | (15h 55m 45.96s , +05d 09m 31.7s) |   C |    60 | 18.3 |        
    7654 | 2021-05-29 00:58:59 |          MASTER-IAC | (16h 07m 11.20s , +06d 57m 04.1s) |   C |    60 | 18.4 |        
    7654 | 2021-05-29 00:58:59 |          MASTER-IAC | (15h 58m 59.35s , +07d 02m 57.7s) |   C |    60 | 18.3 |        
    8620 | 2021-05-29 01:15:05 |          MASTER-IAC | (16h 03m 48.79s , +05d 03m 57.3s) |   C |    60 | 18.4 |        
    8620 | 2021-05-29 01:15:05 |          MASTER-IAC | (15h 55m 38.82s , +05d 09m 50.9s) |   C |    60 | 18.4 |        
    8700 | 2021-05-29 01:16:24 |          MASTER-IAC | (16h 07m 17.45s , +06d 56m 53.0s) |   C |    60 | 18.4 |        
    8700 | 2021-05-29 01:16:24 |          MASTER-IAC | (15h 59m 05.60s , +07d 02m 46.8s) |   C |    60 | 18.3 |        
    9659 | 2021-05-29 01:32:24 |          MASTER-IAC | (16h 03m 48.35s , +05d 01m 47.9s) |   C |    60 | 18.4 |        
    9659 | 2021-05-29 01:32:24 |          MASTER-IAC | (15h 55m 38.69s , +05d 07m 40.9s) |   C |    60 | 18.3 |        
    9739 | 2021-05-29 01:33:44 |          MASTER-IAC | (16h 07m 15.92s , +06d 55m 46.9s) |   C |    60 | 18.4 |        
    9739 | 2021-05-29 01:33:44 |          MASTER-IAC | (15h 59m 04.36s , +07d 01m 40.4s) |   C |    60 | 18.3 |        
   13978 | 2021-05-29 02:43:22 |          MASTER-IAC | (15h 58m 06.11s , +06d 02m 43.8s) |   C |   180 | 19.0 |        
   13978 | 2021-05-29 02:43:22 |          MASTER-IAC | (15h 57m 12.48s , +06d 09m 30.1s) |   C |   180 | 18.8 |        
   14178 | 2021-05-29 02:46:42 |          MASTER-IAC | (15h 58m 06.11s , +06d 01m 30.0s) |   C |   180 | 19.0 |        
   14178 | 2021-05-29 02:46:42 |          MASTER-IAC | (15h 57m 12.58s , +06d 08m 16.9s) |   C |   180 | 18.8 |        
   14379 | 2021-05-29 02:50:04 |          MASTER-IAC | (15h 58m 39.01s , +06d 15m 37.7s) |   C |   180 | 19.0 |        
   14379 | 2021-05-29 02:50:04 |          MASTER-IAC | (15h 57m 45.33s , +06d 22m 24.2s) |   C |   180 | 18.8 |        
   17966 | 2021-05-29 03:49:51 |          MASTER-IAC | (15h 58m 31.43s , +06d 15m 27.5s) |   C |   180 | 18.3 |        
   17966 | 2021-05-29 03:49:51 |          MASTER-IAC | (15h 57m 36.69s , +06d 22m 16.5s) |   C |   180 | 18.2 |        
   22199 | 2021-05-29 05:00:24 |         MASTER-OAFA | (15h 55m 54.42s , +06d 42m 48.4s) |   C |   180 | 18.6 |        
   22347 | 2021-05-29 05:03:51 |         MASTER-OAFA | (15h 55m 02.62s , +05d 45m 34.4s) |   C |    60 | 18.3 |        
   23042 | 2021-05-29 05:15:27 |         MASTER-OAFA | (16h 03m 00.58s , +05d 45m 23.5s) |   C |    60 | 17.9 |        
   24039 | 2021-05-29 05:31:03 |         MASTER-OAFA | (15h 56m 01.51s , +05d 22m 41.0s) |   C |   180 | 18.6 |        
   25007 | 2021-05-29 05:48:11 |         MASTER-OAFA | (15h 55m 06.55s , +04d 23m 38.6s) |   C |    60 | 18.0 |        
   28949 | 2021-05-29 06:53:54 |         MASTER-OAFA | (16h 03m 08.19s , +04d 23m 19.0s) |   C |    60 | 17.8 |        
   29779 | 2021-05-29 07:06:44 |         MASTER-OAFA | (15h 56m 07.85s , +05d 21m 21.2s) |   C |   180 | 18.5 |        
   30929 | 2021-05-29 07:26:54 |         MASTER-OAFA | (15h 55m 04.96s , +04d 23m 15.5s) |   C |    60 | 17.8 |        
   31013 | 2021-05-29 07:28:18 |         MASTER-OAFA | (16h 03m 14.46s , +04d 22m 07.1s) |   C |    60 | 17.6 |        
   31094 | 2021-05-29 07:29:38 |         MASTER-OAFA | (15h 58m 31.78s , +06d 15m 23.9s) |   C |    60 | 17.7 |        
   31388 | 2021-05-29 07:34:33 |         MASTER-OAFA | (16h 06m 28.59s , +06d 16m 59.5s) |   C |    60 | 17.5 |        
   32106 | 2021-05-29 07:46:31 |         MASTER-OAFA | (15h 58m 28.27s , +06d 14m 54.6s) |   C |    60 | 17.7 |        
   32419 | 2021-05-29 07:51:44 |         MASTER-OAFA | (16h 06m 28.05s , +06d 15m 38.9s) |   C |    60 | 17.6 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 4327
TYPE = 35
DAYS = 0


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the MAXI GRB210528.95 (trigger No 362758075,15h 58m 09.36s , +05d 58m 58.8s, R=1) errorbox  10 sec after notice time and 4707 sec after trigger time at 2021-05-29 00:10:22 UT, with upper limit up to  18.8 mag. The observations began at zenith distance = 23 deg. The sun  altitude  is -39.0 deg. 

The galactic latitude b = 40 deg., longitude l = 16 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1623577

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 57m 01.56s , +06d 02m 14.3s) |  P| |   180 | 18.5 |        
    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 56m 10.28s , +06d 08m 43.9s) |  P- |   180 | 18.3 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 57m 09.19s , +06d 02m 16.4s) |  P| |   180 | 18.7 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 56m 17.67s , +06d 08m 46.0s) |  P- |   180 | 18.3 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 57m 06.12s , +06d 03m 54.3s) |  P| |   180 | 18.7 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 56m 14.54s , +06d 10m 23.3s) |  P- |   180 | 18.4 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 57m 06.18s , +06d 02m 37.0s) |  P| |   180 | 18.8 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 56m 14.59s , +06d 09m 05.6s) |  P- |   180 | 18.4 |        


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 4326
TYPE = 35
DAYS = 0


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the MAXI GRB210528.95 (trigger No 362758075,15h 58m 09.36s , +05d 58m 58.8s, R=1) errorbox  10 sec after notice time and 4707 sec after trigger time at 2021-05-29 00:10:22 UT, with upper limit up to  18.8 mag. The observations began at zenith distance = 23 deg. The sun  altitude  is -39.0 deg. 

The galactic latitude b = 40 deg., longitude l = 16 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1623577

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 57m 01.56s , +06d 02m 14.3s) |  P| |   180 | 18.5 |        
    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 56m 10.28s , +06d 08m 43.9s) |  P- |   180 | 18.3 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 57m 09.19s , +06d 02m 16.4s) |  P| |   180 | 18.7 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 56m 17.67s , +06d 08m 46.0s) |  P- |   180 | 18.3 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 57m 06.12s , +06d 03m 54.3s) |  P| |   180 | 18.7 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 56m 14.54s , +06d 10m 23.3s) |  P- |   180 | 18.4 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 57m 06.18s , +06d 02m 37.0s) |  P| |   180 | 18.8 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 56m 14.59s , +06d 09m 05.6s) |  P- |   180 | 18.4 |        


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 4325
TYPE = 34
DAYS = 0


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the MAXI GRB210528.95 (trigger No 362758075,15h 58m 09.36s , +05d 58m 58.8s, R=1) errorbox  10 sec after notice time and 4707 sec after trigger time at 2021-05-29 00:10:22 UT, with upper limit up to  18.8 mag. The observations began at zenith distance = 23 deg. The sun  altitude  is -39.0 deg. 

The galactic latitude b = 40 deg., longitude l = 16 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1623577

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 57m 01.56s , +06d 02m 14.3s) |  P| |   180 | 18.5 |        
    4798 | 2021-05-29 00:10:22 |          MASTER-IAC | (15h 56m 10.28s , +06d 08m 43.9s) |  P- |   180 | 18.3 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 57m 09.19s , +06d 02m 16.4s) |  P| |   180 | 18.7 |        
    4998 | 2021-05-29 00:13:42 |          MASTER-IAC | (15h 56m 17.67s , +06d 08m 46.0s) |  P- |   180 | 18.3 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 57m 06.12s , +06d 03m 54.3s) |  P| |   180 | 18.7 |        
    5198 | 2021-05-29 00:17:02 |          MASTER-IAC | (15h 56m 14.54s , +06d 10m 23.3s) |  P- |   180 | 18.4 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 57m 06.18s , +06d 02m 37.0s) |  P| |   180 | 18.8 |        
    5398 | 2021-05-29 00:20:22 |          MASTER-IAC | (15h 56m 14.59s , +06d 09m 05.6s) |  P- |   180 | 18.4 |        


The observation and reduction will continue. 
The message may be cited.

MASTER, 2002-2024