MASTER Net MASTER Database: GRB240612.51 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 FERMI GRB240612.51
Trignum 739887382
Trigger time 2024-06-12 12:16:17.86
Notice time 2024-06-12 12:25:57.009523
Coord, eb (21h 55m 02.40s , +11d 28m 12.0s) , 5.79
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
2491033 2024-06-12 12:25:57.009523 21h 55m 02.40s +11d 28m 12.0s FERMI 5.79 alert 739887382 24 115 alert
2491025 2024-06-12 12:19:22.270263 22h 25m 19.20s +18d 16m 12.0s FERMI 2.69 alert 739887382 54 112 alert
2490995 2024-06-12 12:16:48.123304 22h 36m 19.92s +23d 39m 00.0s FERMI 12.38 alert 739887382 193 111 alert

DAYS:

MASTER optical transients in this field
MASTER OT (J2000.0) Сoordinates Datetime Published Mag Site Image
J210842.61+084430.4 (21h 08m 42.61s , +08d 44m 30.4s) 2024-06-12 22:58:48 AT2024leo on 2024-06-14 00:00:40.57223 16.124 Tavrida Transient on Tavrida
J221232.00+160140.4 (22h 12m 32.00s , +16d 01m 40.4s) 2024-06-12 17:23:03.84 AT2024lds on 2024-06-14 00:00:38.446827 15.2944 Amur Transient on Amur

Synchronous WFC images
Distance datetime coord2000 observatory camera links
33.1 2024-06-12 12:15:32.133 00h 00m 00.00s +00d 00m 00.0s Amur 29009 Database Amur
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2024-06-12 12:16:17 (JD 2460474.011308)

Siderial time 8.200425 h

Ra 21:55:02.40 Dec 11:28:12.00
(328.760000d, 11.470000d)

Rise 2024-06-13 21:40:38

Transit 2024-06-13 04:57:03

Set 2024-06-13 12:09:32

Amur

Object: Altitude: -6.90 Azimuth: 242.64

Sun: Altitude: -5.12 Azimuth: 136.63

Moon: Altitude: 31.28 Azimuth: 72.14

Tunka

Object: Altitude: -18.06 Azimuth: 221.18

Sun: Altitude: 7.96 Azimuth: 117.73

Moon: Altitude: 43.68 Azimuth: 46.01

Kislovodsk

Object: Altitude: -31.61 Azimuth: 155.82

Sun: Altitude: 46.51 Azimuth: 77.47

Moon: Altitude: 51.24 Azimuth: 312.74

Tavrida

Object: Altitude: -27.83 Azimuth: 147.09

Sun: Altitude: 52.04 Azimuth: 68.35

Moon: Altitude: 45.84 Azimuth: 303.42

SAAO

Object: Altitude: -45.73 Azimuth: 71.75

Sun: Altitude: 29.42 Azimuth: 153.24

Moon: Altitude: 23.86 Azimuth: 234.46

IAC

Object: Altitude: -3.29 Azimuth: 104.90

Sun: Altitude: 77.99 Azimuth: 292.47

Moon: Altitude: 8.71 Azimuth: 259.37

Argentina

Object: Altitude: 27.39 Azimuth: 125.79

Sun: Altitude: 7.13 Azimuth: 237.02

Moon: Altitude: -49.13 Azimuth: 287.39

Mexico

Object: Altitude: 69.58 Azimuth: 17.79

Sun: Altitude: -0.76 Azimuth: 242.12

Moon: Altitude: -45.50 Azimuth: 178.45

Ural

Object: Altitude: -21.42 Azimuth: 175.97

Sun: Altitude: 33.35 Azimuth: 81.46

Moon: Altitude: 45.57 Azimuth: 344.36

Vostryakovo

Object: Altitude: -19.79 Azimuth: 153.29

Sun: Altitude: 45.28 Azimuth: 61.45

Moon: Altitude: 40.92 Azimuth: 315.61

Gal. latitude: -32.665178 Gal. longitude: 69.754930

Dist. to Sun: 105.184083

Dist. to Moon: 154.051229

Moon coord.: (156.118117 d, 13.431172 d)

Sun coord.: (80.947969 d, 23.185642 d)

Lunar disk: 0.340933

Lunar phase: 108.550108

Lunar bright limb: 290.308834

No SN in this field

2024-06-12 12:25:57 (JD 2460474.018021)

Siderial time 8.361977 h

Ra 21:55:02.40 Dec 11:28:12.00
(328.760000d, 11.470000d)

Rise 2024-06-13 21:40:38

Transit 2024-06-13 04:57:03

Set 2024-06-13 12:09:32

Amur

Object: Altitude: -5.52 Azimuth: 244.58

Sun: Altitude: -6.15 Azimuth: 138.60

Moon: Altitude: 29.82 Azimuth: 74.18

Tunka

Object: Altitude: -17.05 Azimuth: 223.43

Sun: Altitude: 6.65 Azimuth: 119.53

Moon: Altitude: 42.58 Azimuth: 48.75

Kislovodsk

Object: Altitude: -32.29 Azimuth: 158.51

Sun: Altitude: 44.80 Azimuth: 79.49

Moon: Altitude: 52.43 Azimuth: 315.91

Tavrida

Object: Altitude: -28.74 Azimuth: 149.59

Sun: Altitude: 50.43 Azimuth: 70.80

Moon: Altitude: 47.18 Azimuth: 306.11

SAAO

Object: Altitude: -47.67 Azimuth: 69.73

Sun: Altitude: 28.47 Azimuth: 150.95

Moon: Altitude: 25.48 Azimuth: 232.69

IAC

Object: Altitude: -5.34 Azimuth: 106.09

Sun: Altitude: 79.92 Azimuth: 298.29

Moon: Altitude: 10.73 Azimuth: 260.45

Argentina

Object: Altitude: 25.70 Azimuth: 123.92

Sun: Altitude: 8.84 Azimuth: 235.58

Moon: Altitude: -47.19 Azimuth: 285.56

Mexico

Object: Altitude: 68.84 Azimuth: 24.15

Sun: Altitude: 1.08 Azimuth: 243.37

Moon: Altitude: -45.54 Azimuth: 181.71

Ural

Object: Altitude: -21.48 Azimuth: 178.52

Sun: Altitude: 32.05 Azimuth: 83.59

Moon: Altitude: 45.84 Azimuth: 347.61

Vostryakovo

Object: Altitude: -20.39 Azimuth: 155.74

Sun: Altitude: 44.06 Azimuth: 64.06

Moon: Altitude: 41.80 Azimuth: 318.42

Gal. latitude: -32.665178 Gal. longitude: 69.754930

Dist. to Sun: 105.189966

Dist. to Moon: 154.063183

Moon coord.: (156.193107 d, 13.396720 d)

Sun coord.: (80.954934 d, 23.186044 d)

Lunar disk: 0.341546

Lunar phase: 108.476057

Lunar bright limb: 290.328024

No SN in this field

2024-06-12 13:25:57 (JD 2460474.059687)

Siderial time 9.364715 h

Ra 21:55:02.40 Dec 11:28:12.00
(328.760000d, 11.470000d)

Rise 2024-06-13 21:40:38

Transit 2024-06-13 04:57:03

Set 2024-06-13 12:09:32

Amur

Object: Altitude: 3.52 Azimuth: 256.24

Sun: Altitude: -11.64 Azimuth: 151.40

Moon: Altitude: 20.50 Azimuth: 86.02

Tunka

Object: Altitude: -9.92 Azimuth: 236.71

Sun: Altitude: -0.91 Azimuth: 131.08

Moon: Altitude: 34.90 Azimuth: 64.09

Kislovodsk

Object: Altitude: -34.70 Azimuth: 175.97

Sun: Altitude: 34.02 Azimuth: 90.66

Moon: Altitude: 57.94 Azimuth: 338.97

Tavrida

Object: Altitude: -32.78 Azimuth: 166.10

Sun: Altitude: 40.05 Azimuth: 83.76

Moon: Altitude: 54.23 Azimuth: 325.67

SAAO

Object: Altitude: -58.87 Azimuth: 53.52

Sun: Altitude: 21.10 Azimuth: 138.11

Moon: Altitude: 34.58 Azimuth: 220.09

IAC

Object: Altitude: -17.77 Azimuth: 114.19

Sun: Altitude: 82.98 Azimuth: 44.48

Moon: Altitude: 23.38 Azimuth: 267.17

Argentina

Object: Altitude: 14.49 Azimuth: 113.70

Sun: Altitude: 18.70 Azimuth: 225.66

Moon: Altitude: -34.92 Azimuth: 276.06

Mexico

Object: Altitude: 60.61 Azimuth: 53.41

Sun: Altitude: 12.90 Azimuth: 250.51

Moon: Altitude: -43.23 Azimuth: 201.35

Ural

Object: Altitude: -20.57 Azimuth: 194.28

Sun: Altitude: 23.90 Azimuth: 96.21

Moon: Altitude: 45.93 Azimuth: 8.04

Vostryakovo

Object: Altitude: -22.80 Azimuth: 171.39

Sun: Altitude: 36.00 Azimuth: 78.71

Moon: Altitude: 46.00 Azimuth: 337.28

Gal. latitude: -32.665178 Gal. longitude: 69.754930

Dist. to Sun: 105.226481

Dist. to Moon: 154.132239

Moon coord.: (156.657926 d, 13.182460 d)

Sun coord.: (80.998164 d, 23.188532 d)

Lunar disk: 0.345354

Lunar phase: 108.016593

Lunar bright limb: 290.445787

No SN in this field

2024-11-21 17:06:27 (JD 2460636.212813)

Siderial time 23.694769 h

Ra 21:55:02.40 Dec 11:28:12.00
(328.760000d, 11.470000d)

Rise 2024-11-22 11:03:40

Transit 2024-11-22 18:16:09

Set 2024-11-23 01:28:38

Amur

Object: Altitude: -7.26 Azimuth: 117.88

Sun: Altitude: -52.54 Azimuth: 226.38

Moon: Altitude: 39.13 Azimuth: 286.18

Tunka

Object: Altitude: 7.70 Azimuth: 98.78

Sun: Altitude: -58.13 Azimuth: 186.29

Moon: Altitude: 23.79 Azimuth: 266.89

Kislovodsk

Object: Altitude: 47.79 Azimuth: 49.79

Sun: Altitude: -37.35 Azimuth: 97.65

Moon: Altitude: -15.04 Azimuth: 220.92

Tavrida

Object: Altitude: 51.31 Azimuth: 37.89

Sun: Altitude: -31.19 Azimuth: 92.03

Moon: Altitude: -17.94 Azimuth: 213.37

SAAO

Object: Altitude: 45.15 Azimuth: 166.24

Sun: Altitude: 1.64 Azimuth: 67.16

Moon: Altitude: -67.95 Azimuth: 297.95

IAC

Object: Altitude: 59.31 Azimuth: 297.68

Sun: Altitude: 11.57 Azimuth: 59.48

Moon: Altitude: -38.78 Azimuth: 159.90

Argentina

Object: Altitude: 2.05 Azimuth: 255.15

Sun: Altitude: 74.59 Azimuth: 136.94

Moon: Altitude: -27.60 Azimuth: 97.90

Mexico

Object: Altitude: -19.52 Azimuth: 242.63

Sun: Altitude: 31.37 Azimuth: 326.72

Moon: Altitude: 27.41 Azimuth: 98.33

Ural

Object: Altitude: 31.30 Azimuth: 59.34

Sun: Altitude: -42.79 Azimuth: 124.65

Moon: Altitude: 1.86 Azimuth: 233.89

Vostryakovo

Object: Altitude: 41.33 Azimuth: 36.12

Sun: Altitude: -32.35 Azimuth: 101.70

Moon: Altitude: -7.77 Azimuth: 215.37

Gal. latitude: -32.665178 Gal. longitude: 69.754930

Dist. to Sun: 95.224459

Dist. to Moon: 146.436411

Moon coord.: (137.898175 d, 20.347150 d)

Sun coord.: (237.337425 d, -20.058547 d)

Lunar disk: 0.632993

Lunar phase: 74.574458

Lunar bright limb: 106.177521

No SN in this field
Recent coverage and limits telegrams

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

  ID = 10333
TYPE = 35
DAYS = 2


MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the FERMI GRB 240612B ( Fermi GBM team, GCN 36663) errorbox  18199 sec after notice time and 18219 sec after trigger time at 2024-06-12 17:19:56 UT, with upper limit up to  17.3 mag. Observations started at twilight.  The observations began at zenith distance = 51 deg. The sun  altitude  is -12.9 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 240612B errorbox  43360 sec after notice time and 43380 sec after trigger time at 2024-06-13 00:19:17 UT, with upper limit up to  19.6 mag. The observations began at zenith distance = 65 deg. The sun  altitude  is -66.1 deg. 

The galactic latitude b = -33 deg., longitude l = 82 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2491025

We obtain a following upper limits.  

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

   18249 | 2024-06-12 17:19:56 |         MASTER-Amur | (22h 20m 16.94s , +14d 48m 01.1s) |   C |    60 | 16.4 |        
   18436 | 2024-06-12 17:23:03 |         MASTER-Amur | (22h 09m 58.81s , +16d 18m 45.1s) |   C |    60 | 17.3 |        
   18436 | 2024-06-12 17:23:03 |         MASTER-Amur | (22h 16m 40.76s , +16d 43m 06.7s) |   C |    60 | 16.5 |        
   19191 | 2024-06-12 17:35:39 |         MASTER-Amur | (22h 20m 16.59s , +14d 49m 31.7s) |   C |    60 | 16.3 |        
   19379 | 2024-06-12 17:38:46 |         MASTER-Amur | (22h 09m 31.35s , +16d 17m 57.0s) |   C |    60 | 16.8 |        
   19379 | 2024-06-12 17:38:46 |         MASTER-Amur | (22h 16m 40.31s , +16d 42m 55.6s) |   C |    60 | 16.4 |        
   43410 | 2024-06-13 00:19:17 |         MASTER-SAAO | (22h 14m 55.34s , +14d 22m 25.5s) |   C |    60 | 19.5 |        
   44427 | 2024-06-13 00:36:14 |         MASTER-SAAO | (22h 14m 56.28s , +14d 22m 56.2s) |   C |    60 | 19.2 |        
   45393 | 2024-06-13 00:52:21 |         MASTER-SAAO | (22h 17m 31.25s , +14d 05m 43.4s) |   C |    60 | 18.7 |        
   45869 | 2024-06-13 01:00:16 |         MASTER-SAAO | (22h 13m 51.25s , +16d 00m 03.6s) |   C |    60 | 18.9 |        
   46825 | 2024-06-13 01:16:12 |         MASTER-SAAO | (22h 13m 44.42s , +16d 01m 48.0s) |   C |    60 | 19.4 |        
   47776 | 2024-06-13 01:32:04 |         MASTER-SAAO | (22h 13m 47.83s , +16d 01m 10.9s) |   C |    60 | 19.6 |        
   52859 | 2024-06-13 02:56:46 |         MASTER-SAAO | (22h 12m 02.38s , +17d 56m 02.5s) |   C |    60 | 19.2 |        
   53812 | 2024-06-13 03:12:40 |         MASTER-SAAO | (22h 12m 13.64s , +17d 57m 05.6s) |   C |    60 | 19.3 |        
   54764 | 2024-06-13 03:28:31 |         MASTER-SAAO | (22h 12m 16.84s , +17d 58m 28.8s) |   C |    60 | 19.3 |        
   58684 | 2024-06-13 04:33:51 |         MASTER-SAAO | (22h 22m 09.35s , +16d 04m 04.2s) |   C |    60 | 18.7 |        
   58763 | 2024-06-13 04:35:10 |         MASTER-SAAO | (22h 30m 34.18s , +16d 04m 10.9s) |   C |    60 | 18.4 |        
   59635 | 2024-06-13 04:49:42 |         MASTER-SAAO | (22h 22m 17.62s , +16d 06m 29.5s) |   C |    60 | 16.5 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 10331
TYPE = 35
DAYS = 1


MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the FERMI GRB 240612B ( Fermi GBM team, GCN 36663) errorbox  18199 sec after notice time and 18219 sec after trigger time at 2024-06-12 17:19:56 UT, with upper limit up to  17.3 mag. Observations started at twilight.  The observations began at zenith distance = 51 deg. The sun  altitude  is -12.9 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 240612B errorbox  43360 sec after notice time and 43380 sec after trigger time at 2024-06-13 00:19:17 UT, with upper limit up to  19.6 mag. The observations began at zenith distance = 65 deg. The sun  altitude  is -66.1 deg. 

The galactic latitude b = -33 deg., longitude l = 82 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2491018

We obtain a following upper limits.  

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

   18249 | 2024-06-12 17:19:56 |         MASTER-Amur | (22h 20m 16.94s , +14d 48m 01.1s) |   C |    60 | 16.4 |        
   18436 | 2024-06-12 17:23:03 |         MASTER-Amur | (22h 09m 58.81s , +16d 18m 45.1s) |   C |    60 | 17.3 |        
   18436 | 2024-06-12 17:23:03 |         MASTER-Amur | (22h 16m 40.76s , +16d 43m 06.7s) |   C |    60 | 16.5 |        
   19191 | 2024-06-12 17:35:39 |         MASTER-Amur | (22h 20m 16.59s , +14d 49m 31.7s) |   C |    60 | 16.3 |        
   19379 | 2024-06-12 17:38:46 |         MASTER-Amur | (22h 09m 31.35s , +16d 17m 57.0s) |   C |    60 | 16.8 |        
   19379 | 2024-06-12 17:38:46 |         MASTER-Amur | (22h 16m 40.31s , +16d 42m 55.6s) |   C |    60 | 16.4 |        
   43410 | 2024-06-13 00:19:17 |         MASTER-SAAO | (22h 14m 55.34s , +14d 22m 25.5s) |   C |    60 | 19.5 |        
   44427 | 2024-06-13 00:36:14 |         MASTER-SAAO | (22h 14m 56.28s , +14d 22m 56.2s) |   C |    60 | 19.2 |        
   45393 | 2024-06-13 00:52:21 |         MASTER-SAAO | (22h 17m 31.25s , +14d 05m 43.4s) |   C |    60 | 18.7 |        
   45869 | 2024-06-13 01:00:16 |         MASTER-SAAO | (22h 13m 51.25s , +16d 00m 03.6s) |   C |    60 | 18.9 |        
   46825 | 2024-06-13 01:16:12 |         MASTER-SAAO | (22h 13m 44.42s , +16d 01m 48.0s) |   C |    60 | 19.4 |        
   47776 | 2024-06-13 01:32:04 |         MASTER-SAAO | (22h 13m 47.83s , +16d 01m 10.9s) |   C |    60 | 19.6 |        
   52859 | 2024-06-13 02:56:46 |         MASTER-SAAO | (22h 12m 02.38s , +17d 56m 02.5s) |   C |    60 | 19.2 |        
   53812 | 2024-06-13 03:12:40 |         MASTER-SAAO | (22h 12m 13.64s , +17d 57m 05.6s) |   C |    60 | 19.3 |        
   54764 | 2024-06-13 03:28:31 |         MASTER-SAAO | (22h 12m 16.84s , +17d 58m 28.8s) |   C |    60 | 19.3 |        
   58684 | 2024-06-13 04:33:51 |         MASTER-SAAO | (22h 22m 09.35s , +16d 04m 04.2s) |   C |    60 | 18.7 |        
   58763 | 2024-06-13 04:35:10 |         MASTER-SAAO | (22h 30m 34.18s , +16d 04m 10.9s) |   C |    60 | 18.4 |        
   59635 | 2024-06-13 04:49:42 |         MASTER-SAAO | (22h 22m 17.62s , +16d 06m 29.5s) |   C |    60 | 16.5 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 10328
TYPE = 35
DAYS = 0


MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the FERMI GRB 240612B ( Fermi GBM team, GCN 36663) errorbox  8804 sec after notice time and 8824 sec after trigger time at 2024-06-12 14:43:22 UT, with upper limit up to  17.3 mag. Observations started at twilight.  The observations began at zenith distance = 68 deg. The sun  altitude  is -16.1 deg. 

The galactic latitude b = -33 deg., longitude l = 70 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2491028

We obtain a following upper limits.  

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

    8855 | 2024-06-12 14:43:22 |         MASTER-Amur | (21h 37m 48.28s , +16d 25m 12.3s) |   C |    60 | 17.3 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 10327
TYPE = 35
DAYS = 0


MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the FERMI GRB 240612B ( Fermi GBM team, GCN 36663) errorbox  8804 sec after notice time and 8824 sec after trigger time at 2024-06-12 14:43:22 UT, with upper limit up to  17.3 mag. Observations started at twilight.  The observations began at zenith distance = 68 deg. The sun  altitude  is -16.1 deg. 

The galactic latitude b = -33 deg., longitude l = 70 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2491028

We obtain a following upper limits.  

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

    8855 | 2024-06-12 14:43:22 |         MASTER-Amur | (21h 37m 48.28s , +16d 25m 12.3s) |   C |    60 | 17.3 |        
Filter C is a clear (unfiltred) band. 


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



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  ID = 10326
TYPE = 34
DAYS = 0


MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the FERMI GRB 240612B ( Fermi GBM team, GCN 36663) errorbox  8804 sec after notice time and 8824 sec after trigger time at 2024-06-12 14:43:22 UT, with upper limit up to  17.3 mag. Observations started at twilight.  The observations began at zenith distance = 68 deg. The sun  altitude  is -16.1 deg. 

The galactic latitude b = -33 deg., longitude l = 70 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2491028

We obtain a following upper limits.  

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

    8855 | 2024-06-12 14:43:22 |         MASTER-Amur | (21h 37m 48.28s , +16d 25m 12.3s) |   C |    60 | 17.3 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2024