MASTER Net MASTER Database: LIGO alert

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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Name FERMI GRB230921.11
Type 2
Trigger time 2023-09-21 02:41:32.62
Notice time 2023-09-21 02:42:35.236133
Distance ± Mpc
BNS BHH NSBH Gap Terr
Galaxy in: 50%
90%
FULL

This work was supported by RFBR BRICS 17-52-80133 grant.
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)

DAYS:
Coverage since triggertime up to

ALL PLOTS
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 62.7 55.6 59.8
2023-10-05 02:41:32 336.0 336.0 594.6
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 63.6 56.3 60.5
2023-10-04 02:41:32 312.0 312.0 594.6
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 65.3 57.5 61.8
2023-10-03 02:41:32 288.0 288.0 594.6
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 65.3 57.5 61.8
2023-10-02 02:41:32 264.0 264.0 594.6
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 65.3 57.5 61.8
2023-10-01 02:41:32 240.0 240.0 575.1
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 65.3 57.5 61.8
2023-09-30 02:41:32 216.0 216.0 575.1
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 65.3 57.5 61.8
2023-09-29 02:41:32 192.0 192.0 572.3
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 62.0 55.5 59.6
2023-09-28 02:41:32 168.0 168.0 545.2
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 65.2 57.6 61.6
2023-09-27 02:41:32 144.0 144.0 543.5
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 65.2 57.3 61.0
2023-09-26 02:41:32 120.0 120.0 512.1
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 64.5 56.9 60.3
2023-09-25 02:41:32 96.0 96.0 487.9
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 5.6 11.3 16.8
2023-09-24 02:41:32 72.0 72.0 286.3
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 5.1 11.0 13.9
2023-09-23 02:41:32 48.0 48.0 155.8
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 0.0 0.0 0.0
2023-09-22 02:41:32 24.0 24.0 16.4
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 0.0 0.0 0.0
2023-09-21 14:41:32 12.0 12.0 0.0
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 0.0 0.0 0.0
2023-09-21 08:41:32 6.0 6.0 0.0
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 0.0 0.0 0.0
2023-09-21 03:41:32 1.0 1.0 0.0

Map with WFC

Discoveries in this field
No discoveries yet!

Synchronous WFC images
datetime coord2000 observatory camera links
Errorbox center visibility at MASTER facilities
SELECT set_sphere_output('HMS'); select set_sphere_output_precision(1); select distinct on (gn) get_grb_name2 (grbtime, satel ) as gn, coord2000, satel, errorbox, 'now'::timestamp,'now'::timestamp+'1 hour'::interval,grbtime+'1 hour'::interval from grb where tabs(grbtime-'2023-09-21 02:41:32.62')<'10 minutes'::interval order by gn,seq desc,errorbox asc;
trigger notice notice+1hr now

2023-09-21 02:41:32 (JD 2460208.612176)

Siderial time 5.181928 h

Ra 16:02:24.00 Dec -38:27:00.00
(240.600000d, -38.450000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -19.42 Azimuth: 307.43

Sun: Altitude: 39.90 Azimuth: 346.71

Moon: Altitude: -10.75 Azimuth: 296.14

Tunka

Object: Altitude: -33.46 Azimuth: 291.44

Sun: Altitude: 31.49 Azimuth: 318.29

Moon: Altitude: -25.79 Azimuth: 278.05

Kislovodsk

Object: Altitude: -72.63 Azimuth: 259.82

Sun: Altitude: -3.02 Azimuth: 265.75

Moon: Altitude: -65.71 Azimuth: 224.94

Tavrida

Object: Altitude: -78.12 Azimuth: 242.81

Sun: Altitude: -8.94 Azimuth: 259.63

Moon: Altitude: -68.46 Azimuth: 205.87

SAAO

Object: Altitude: -19.17 Azimuth: 359.73

Sun: Altitude: -22.97 Azimuth: 284.29

Moon: Altitude: -32.72 Azimuth: 3.28

IAC

Object: Altitude: -57.73 Azimuth: 61.96

Sun: Altitude: -51.65 Azimuth: 224.63

Moon: Altitude: -53.90 Azimuth: 85.93

Argentina

Object: Altitude: 19.00 Azimuth: 55.92

Sun: Altitude: -50.02 Azimuth: 44.89

Moon: Altitude: 15.31 Azimuth: 69.97

Mexico

Object: Altitude: 6.79 Azimuth: 36.61

Sun: Altitude: -18.17 Azimuth: 102.62

Moon: Altitude: 19.01 Azimuth: 43.46

Ural

Object: Altitude: -58.50 Azimuth: 250.79

Sun: Altitude: 7.27 Azimuth: 279.50

Moon: Altitude: -48.88 Azimuth: 233.63

Vostryakovo

Object: Altitude: -69.47 Azimuth: 221.67

Sun: Altitude: -4.76 Azimuth: 261.33

Moon: Altitude: -57.77 Azimuth: 204.24

Gal. latitude: 10.131648 Gal. longitude: 339.473773

Dist. to Sun: 69.711770

Dist. to Moon: 13.915684

Moon coord.: (243.959636 d, -24.828387 d)

Sun coord.: (177.750523 d, 0.974930 d)

Lunar disk: 0.321655

Lunar phase: 110.897111

Lunar bright limb: 281.419957

No SN in this field

2023-09-21 02:42:35 (JD 2460208.612905)

Siderial time 5.199476 h

Ra 16:02:24.00 Dec -38:27:00.00
(240.600000d, -38.450000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -19.28 Azimuth: 307.59

Sun: Altitude: 39.94 Azimuth: 347.05

Moon: Altitude: -10.61 Azimuth: 296.32

Tunka

Object: Altitude: -33.30 Azimuth: 291.61

Sun: Altitude: 31.60 Azimuth: 318.57

Moon: Altitude: -25.63 Azimuth: 278.24

Kislovodsk

Object: Altitude: -72.44 Azimuth: 260.11

Sun: Altitude: -2.83 Azimuth: 265.94

Moon: Altitude: -65.58 Azimuth: 225.41

Tavrida

Object: Altitude: -77.95 Azimuth: 243.40

Sun: Altitude: -8.75 Azimuth: 259.82

Moon: Altitude: -68.38 Azimuth: 206.46

SAAO

Object: Altitude: -19.17 Azimuth: 359.52

Sun: Altitude: -22.75 Azimuth: 284.13

Moon: Altitude: -32.73 Azimuth: 3.00

IAC

Object: Altitude: -57.93 Azimuth: 61.91

Sun: Altitude: -51.48 Azimuth: 224.97

Moon: Altitude: -54.12 Azimuth: 86.02

Argentina

Object: Altitude: 18.81 Azimuth: 55.83

Sun: Altitude: -50.18 Azimuth: 44.56

Moon: Altitude: 15.11 Azimuth: 69.85

Mexico

Object: Altitude: 6.66 Azimuth: 36.77

Sun: Altitude: -18.39 Azimuth: 102.77

Moon: Altitude: 18.86 Azimuth: 43.64

Ural

Object: Altitude: -58.36 Azimuth: 251.09

Sun: Altitude: 7.41 Azimuth: 279.73

Moon: Altitude: -48.77 Azimuth: 233.94

Vostryakovo

Object: Altitude: -69.37 Azimuth: 222.18

Sun: Altitude: -4.61 Azimuth: 261.55

Moon: Altitude: -57.71 Azimuth: 204.66

Gal. latitude: 10.131648 Gal. longitude: 339.473773

Dist. to Sun: 69.711095

Dist. to Moon: 13.915191

Moon coord.: (243.969828 d, -24.830691 d)

Sun coord.: (177.751177 d, 0.974646 d)

Lunar disk: 0.321726

Lunar phase: 110.888293

Lunar bright limb: 281.415891

No SN in this field

2023-09-21 03:42:35 (JD 2460208.654572)

Siderial time 6.202214 h

Ra 16:02:24.00 Dec -38:27:00.00
(240.600000d, -38.450000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -12.20 Azimuth: 317.37

Sun: Altitude: 40.45 Azimuth: 6.72

Moon: Altitude: -2.86 Azimuth: 306.98

Tunka

Object: Altitude: -24.98 Azimuth: 301.15

Sun: Altitude: 36.62 Azimuth: 335.67

Moon: Altitude: -17.05 Azimuth: 288.90

Kislovodsk

Object: Altitude: -61.62 Azimuth: 272.25

Sun: Altitude: 7.98 Azimuth: 276.36

Moon: Altitude: -57.00 Azimuth: 246.34

Tavrida

Object: Altitude: -67.67 Azimuth: 263.79

Sun: Altitude: 1.84 Azimuth: 270.48

Moon: Altitude: -61.80 Azimuth: 233.81

SAAO

Object: Altitude: -17.69 Azimuth: 347.21

Sun: Altitude: -10.27 Azimuth: 275.44

Moon: Altitude: -31.59 Azimuth: 347.57

IAC

Object: Altitude: -69.31 Azimuth: 55.02

Sun: Altitude: -40.94 Azimuth: 240.51

Moon: Altitude: -66.88 Azimuth: 92.32

Argentina

Object: Altitude: 8.62 Azimuth: 49.76

Sun: Altitude: -57.24 Azimuth: 22.00

Moon: Altitude: 3.92 Azimuth: 62.92

Mexico

Object: Altitude: -1.79 Azimuth: 44.97

Sun: Altitude: -30.65 Azimuth: 112.30

Moon: Altitude: 9.50 Azimuth: 53.12

Ural

Object: Altitude: -50.36 Azimuth: 265.99

Sun: Altitude: 15.21 Azimuth: 292.80

Moon: Altitude: -41.95 Azimuth: 249.93

Vostryakovo

Object: Altitude: -62.43 Azimuth: 245.82

Sun: Altitude: 3.87 Azimuth: 273.93

Moon: Altitude: -53.05 Azimuth: 226.36

Gal. latitude: 10.131648 Gal. longitude: 339.473773

Dist. to Sun: 69.672502

Dist. to Moon: 13.897638

Moon coord.: (244.553113 d, -24.961220 d)

Sun coord.: (177.788544 d, 0.958458 d)

Lunar disk: 0.325844

Lunar phase: 110.384146

Lunar bright limb: 281.182420

No SN in this field

2025-01-20 05:14:52 (JD 2460695.718657)

Siderial time 15.745165 h

Ra 16:02:24.00 Dec -38:27:00.00
(240.600000d, -38.450000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -26.03 Azimuth: 60.32

Sun: Altitude: 16.46 Azimuth: 23.28

Moon: Altitude: -32.04 Azimuth: 124.14

Tunka

Object: Altitude: -14.72 Azimuth: 45.10

Sun: Altitude: 18.04 Azimuth: 359.40

Moon: Altitude: -17.44 Azimuth: 102.83

Kislovodsk

Object: Altitude: 7.80 Azimuth: 0.38

Sun: Altitude: 5.11 Azimuth: 304.35

Moon: Altitude: 22.82 Azimuth: 55.96

Tavrida

Object: Altitude: 6.51 Azimuth: 353.68

Sun: Altitude: -0.60 Azimuth: 298.32

Moon: Altitude: 27.02 Azimuth: 47.91

SAAO

Object: Altitude: 71.72 Azimuth: 295.32

Sun: Altitude: 16.44 Azimuth: 283.78

Moon: Altitude: 52.60 Azimuth: 128.72

IAC

Object: Altitude: 3.72 Azimuth: 317.97

Sun: Altitude: -35.37 Azimuth: 275.59

Moon: Altitude: 54.65 Azimuth: 344.64

Argentina

Object: Altitude: 4.89 Azimuth: 312.95

Sun: Altitude: -37.62 Azimuth: 351.69

Moon: Altitude: 27.13 Azimuth: 259.66

Mexico

Object: Altitude: -66.27 Azimuth: 295.72

Sun: Altitude: -57.56 Azimuth: 101.41

Moon: Altitude: -13.99 Azimuth: 268.61

Ural

Object: Altitude: -6.62 Azimuth: 13.71

Sun: Altitude: 4.45 Azimuth: 319.03

Moon: Altitude: 7.01 Azimuth: 67.47

Vostryakovo

Object: Altitude: -3.90 Azimuth: 356.68

Sun: Altitude: -3.75 Azimuth: 300.84

Moon: Altitude: 18.08 Azimuth: 48.21

Gal. latitude: 10.131648 Gal. longitude: 339.473773

Dist. to Sun: 55.700752

Dist. to Moon: 55.328430

Moon coord.: (190.911144 d, -5.999758 d)

Sun coord.: (302.231357 d, -20.146732 d)

Lunar disk: 0.652887

Lunar phase: 72.195314

Lunar bright limb: 113.390985

No SN in this field
Recent coverage and limits telegrams
#######################################################################################
#######################################################################################

  ID = 8979
TYPE = 35
DAYS = 2


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the FERMI GRB 230921A ( Fermi GBM team, GCN 34754) errorbox  1 days 75026 sec after notice time and 1 days 75061 sec after trigger time at 2023-09-22 23:32:33 UT, with upper limit up to  17.4 mag. Observations started at twilight.  The observations began at zenith distance = 46 deg. The sun  altitude  is -14.0 deg. 

The galactic latitude b = 14 deg., longitude l = 342 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2273979

We obtain a following upper limits.  

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

  161491 | 2023-09-22 23:32:33 |         MASTER-OAFA | (15h 26m 13.99s , -30d 57m 08.7s) |   C |    60 | 13.1 |        
  161751 | 2023-09-22 23:36:53 |         MASTER-OAFA | (15h 25m 28.21s , -29d 02m 48.7s) |   C |    60 | 13.5 |        
  161831 | 2023-09-22 23:38:13 |         MASTER-OAFA | (15h 17m 50.73s , -32d 52m 38.1s) |   C |    60 | 14.9 |        
  161960 | 2023-09-22 23:40:22 |         MASTER-OAFA | (15h 27m 08.19s , -32d 52m 47.4s) |   C |    60 | 13.6 |        
  162945 | 2023-09-22 23:56:48 |         MASTER-OAFA | (15h 17m 52.86s , -32d 52m 48.4s) |   C |    60 | 16.9 |        
  163076 | 2023-09-22 23:58:58 |         MASTER-OAFA | (15h 27m 06.83s , -32d 51m 07.5s) |   C |    60 | 13.6 |        
  164027 | 2023-09-23 00:14:49 |         MASTER-OAFA | (15h 18m 12.11s , -32d 52m 05.0s) |   C |    60 | 13.6 |        
  164159 | 2023-09-23 00:17:01 |         MASTER-OAFA | (15h 27m 38.78s , -32d 53m 15.6s) |   C |    60 | 13.3 |        
  165205 | 2023-09-23 00:34:27 |         MASTER-OAFA | (15h 20m 01.84s , -34d 45m 17.6s) |   C |    60 | 17.4 |        
  165340 | 2023-09-23 00:36:42 |         MASTER-OAFA | (15h 30m 11.55s , -34d 46m 27.8s) |   C |    60 | 12.6 |        
  166884 | 2023-09-23 01:02:26 |         MASTER-OAFA | (15h 20m 01.36s , -34d 46m 40.0s) |   C |    60 | 17.4 |        
  166964 | 2023-09-23 01:03:46 |         MASTER-OAFA | (15h 29m 45.57s , -34d 45m 49.4s) |   C |    60 | 15.7 |        
  168328 | 2023-09-23 01:26:30 |         MASTER-OAFA | (15h 29m 44.94s , -34d 48m 03.1s) |   C |    60 | 15.8 |        
  171129 | 2023-09-23 02:13:11 |         MASTER-OAFA | (15h 23m 22.32s , -36d 40m 26.9s) |   C |    60 | 16.4 |        
  172326 | 2023-09-23 02:33:08 |         MASTER-OAFA | (15h 33m 22.44s , -36d 43m 13.9s) |   C |    60 | 16.7 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2025