MASTER Net MASTER Database: GRB210211.36 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 SWIFT GRB210211.36
Trignum 1032024
Trigger time 2021-02-11 08:44:42
Notice time 2021-02-11 09:00:37.821688
Coord, eb (17h 57m 44.88s , -46d 15m 57.6s) , 0.000888889
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
1545000 2021-02-11 09:00:37.821688 17h 57m 44.88s -46d 15m 57.6s SWIFT 0.000888889 alert 1032024 6 67 alert
1544962 2021-02-11 08:43:41.692146 17h 57m 43.92s -46d 17m 56.4s SWIFT 0.05 alert 1032024 4 61 alert

DAYS:

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

Synchronous WFC images
Distance datetime coord2000 observatory links
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2021-02-11 08:44:42 (JD 2459256.864375)

Siderial time 20.695525 h

Ra 17:57:44.88 Dec -46:15:57.60
(269.437000d, -46.266000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -57.66 Azimuth: 77.77

Sun: Altitude: -1.72 Azimuth: 69.94

Moon: Altitude: -8.51 Azimuth: 69.13

Tunka

Object: Altitude: -43.54 Azimuth: 66.16

Sun: Altitude: 10.81 Azimuth: 50.12

Moon: Altitude: 3.97 Azimuth: 50.38

Kislovodsk

Object: Altitude: -8.75 Azimuth: 30.15

Sun: Altitude: 31.60 Azimuth: 349.09

Moon: Altitude: 26.22 Azimuth: 353.93

Tavrida

Object: Altitude: -6.80 Azimuth: 25.01

Sun: Altitude: 29.02 Azimuth: 339.86

Moon: Altitude: 24.15 Azimuth: 345.25

SAAO

Object: Altitude: 66.86 Azimuth: 46.11

Sun: Altitude: 56.09 Azimuth: 244.55

Moon: Altitude: 62.41 Azimuth: 249.70

IAC

Object: Altitude: 14.49 Azimuth: 350.66

Sun: Altitude: 11.36 Azimuth: 292.86

Moon: Altitude: 11.06 Azimuth: 299.83

Argentina

Object: Altitude: 38.33 Azimuth: 306.41

Sun: Altitude: -17.60 Azimuth: 299.69

Moon: Altitude: -11.09 Azimuth: 301.86

Mexico

Object: Altitude: -33.09 Azimuth: 307.90

Sun: Altitude: -66.56 Azimuth: 227.26

Moon: Altitude: -67.78 Azimuth: 244.67

Ural

Object: Altitude: -25.79 Azimuth: 43.12

Sun: Altitude: 18.69 Azimuth: 7.63

Moon: Altitude: 12.58 Azimuth: 10.82

Vostryakovo

Object: Altitude: -17.40 Azimuth: 28.49

Sun: Altitude: 19.58 Azimuth: 345.28

Moon: Altitude: 14.28 Azimuth: 349.81

Gal. latitude: -11.326981 Gal. longitude: 346.431566

Dist. to Sun: 56.286945

Dist. to Moon: 49.601158

Moon coord.: (321.123347 d, -19.810225 d)

Sun coord.: (324.905192 d, -13.999323 d)

Lunar disk: 0.003594

Lunar phase: 173.126061

Lunar bright limb: 32.549054

No SN in this field

2021-02-11 09:00:37 (JD 2459256.875428)

Siderial time 20.961529 h

Ra 17:57:44.88 Dec -46:15:57.60
(269.437000d, -46.266000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -60.16 Azimuth: 80.03

Sun: Altitude: -4.12 Azimuth: 72.97

Moon: Altitude: -10.79 Azimuth: 71.97

Tunka

Object: Altitude: -45.82 Azimuth: 68.36

Sun: Altitude: 8.88 Azimuth: 53.52

Moon: Altitude: 2.14 Azimuth: 53.49

Kislovodsk

Object: Altitude: -10.25 Azimuth: 32.50

Sun: Altitude: 32.03 Azimuth: 353.60

Moon: Altitude: 26.46 Azimuth: 357.96

Tavrida

Object: Altitude: -8.05 Azimuth: 27.49

Sun: Altitude: 29.89 Azimuth: 344.18

Moon: Altitude: 24.80 Azimuth: 349.16

SAAO

Object: Altitude: 64.37 Azimuth: 48.99

Sun: Altitude: 59.06 Azimuth: 239.95

Moon: Altitude: 65.38 Azimuth: 245.02

IAC

Object: Altitude: 14.97 Azimuth: 353.47

Sun: Altitude: 14.57 Azimuth: 295.07

Moon: Altitude: 13.98 Azimuth: 302.00

Argentina

Object: Altitude: 41.07 Azimuth: 305.97

Sun: Altitude: -14.63 Azimuth: 297.13

Moon: Altitude: -8.30 Azimuth: 299.52

Mexico

Object: Altitude: -30.40 Azimuth: 308.65

Sun: Altitude: -63.92 Azimuth: 233.99

Moon: Altitude: -64.72 Azimuth: 249.49

Ural

Object: Altitude: -27.30 Azimuth: 45.70

Sun: Altitude: 18.33 Azimuth: 11.69

Moon: Altitude: 12.16 Azimuth: 14.50

Vostryakovo

Object: Altitude: -18.53 Azimuth: 31.14

Sun: Altitude: 20.08 Azimuth: 349.35

Moon: Altitude: 14.63 Azimuth: 353.52

Gal. latitude: -11.326981 Gal. longitude: 346.431566

Dist. to Sun: 56.296843

Dist. to Moon: 49.729359

Moon coord.: (321.273403 d, -19.770863 d)

Sun coord.: (324.916094 d, -13.995680 d)

Lunar disk: 0.003490

Lunar phase: 173.226244

Lunar bright limb: 31.729423

No SN in this field

2021-02-11 10:00:37 (JD 2459256.917095)

Siderial time 21.964267 h

Ra 17:57:44.88 Dec -46:15:57.60
(269.437000d, -46.266000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -69.71 Azimuth: 89.82

Sun: Altitude: -13.48 Azimuth: 84.25

Moon: Altitude: -19.68 Azimuth: 82.68

Tunka

Object: Altitude: -54.68 Azimuth: 76.86

Sun: Altitude: 0.90 Azimuth: 65.74

Moon: Altitude: -5.42 Azimuth: 64.85

Kislovodsk

Object: Altitude: -16.74 Azimuth: 40.84

Sun: Altitude: 31.63 Azimuth: 10.74

Moon: Altitude: 25.60 Azimuth: 13.10

Tavrida

Object: Altitude: -13.70 Azimuth: 36.36

Sun: Altitude: 31.28 Azimuth: 1.03

Moon: Altitude: 25.54 Azimuth: 4.20

SAAO

Object: Altitude: 54.33 Azimuth: 54.28

Sun: Altitude: 68.45 Azimuth: 214.24

Moon: Altitude: 74.82 Azimuth: 215.03

IAC

Object: Altitude: 15.24 Azimuth: 4.22

Sun: Altitude: 26.04 Azimuth: 304.64

Moon: Altitude: 24.31 Azimuth: 311.43

Argentina

Object: Altitude: 51.45 Azimuth: 305.88

Sun: Altitude: -2.88 Azimuth: 288.41

Moon: Altitude: 2.71 Azimuth: 291.48

Mexico

Object: Altitude: -20.60 Azimuth: 312.43

Sun: Altitude: -52.45 Azimuth: 251.30

Moon: Altitude: -52.63 Azimuth: 261.80

Ural

Object: Altitude: -33.61 Azimuth: 55.28

Sun: Altitude: 15.67 Azimuth: 26.65

Moon: Altitude: 9.45 Azimuth: 28.09

Vostryakovo

Object: Altitude: -23.55 Azimuth: 40.88

Sun: Altitude: 20.52 Azimuth: 4.87

Moon: Altitude: 14.70 Azimuth: 7.61

Gal. latitude: -11.326981 Gal. longitude: 346.431566

Dist. to Sun: 56.334157

Dist. to Moon: 50.213054

Moon coord.: (321.838109 d, -19.621433 d)

Sun coord.: (324.957189 d, -13.981943 d)

Lunar disk: 0.003124

Lunar phase: 173.591991

Lunar bright limb: 28.429448

No SN in this field

2024-06-30 13:31:28 (JD 2460492.063519)

Siderial time 10.639688 h

Ra 17:57:44.88 Dec -46:15:57.60
(269.437000d, -46.266000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -8.12 Azimuth: 346.20

Sun: Altitude: -11.81 Azimuth: 151.77

Moon: Altitude: -16.76 Azimuth: 222.50

Tunka

Object: Altitude: -15.22 Azimuth: 329.92

Sun: Altitude: -1.14 Azimuth: 131.40

Moon: Altitude: -23.27 Azimuth: 198.29

Kislovodsk

Object: Altitude: -38.93 Azimuth: 300.84

Sun: Altitude: 33.68 Azimuth: 90.92

Moon: Altitude: -20.70 Azimuth: 134.45

Tavrida

Object: Altitude: -44.74 Azimuth: 296.76

Sun: Altitude: 39.72 Azimuth: 84.05

Moon: Altitude: -15.45 Azimuth: 127.44

SAAO

Object: Altitude: 2.20 Azimuth: 326.29

Sun: Altitude: 20.89 Azimuth: 137.75

Moon: Altitude: -28.01 Azimuth: 88.26

IAC

Object: Altitude: -68.06 Azimuth: 329.28

Sun: Altitude: 82.68 Azimuth: 46.56

Moon: Altitude: 16.97 Azimuth: 96.17

Argentina

Object: Altitude: -5.15 Azimuth: 24.56

Sun: Altitude: 18.99 Azimuth: 225.37

Moon: Altitude: 39.07 Azimuth: 148.23

Mexico

Object: Altitude: -29.83 Azimuth: 51.17

Sun: Altitude: 13.23 Azimuth: 250.74

Moon: Altitude: 66.75 Azimuth: 316.44

Ural

Object: Altitude: -36.34 Azimuth: 300.95

Sun: Altitude: 23.64 Azimuth: 96.53

Moon: Altitude: -16.43 Azimuth: 153.28

Vostryakovo

Object: Altitude: -46.61 Azimuth: 288.61

Sun: Altitude: 35.73 Azimuth: 79.07

Moon: Altitude: -10.46 Azimuth: 132.61

Gal. latitude: -11.326981 Gal. longitude: 346.431566

Dist. to Sun: 155.441213

Dist. to Moon: 119.027899

Moon coord.: (27.818926 d, 13.228147 d)

Sun coord.: (99.694173 d, 23.147408 d)

Lunar disk: 0.317006

Lunar phase: 111.468424

Lunar bright limb: 70.017340

No SN in this field
Recent coverage and limits telegrams

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

  ID = 3762
TYPE = 35
DAYS = 1


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) was pointed to the SWIFT GRB 210211A ( E. Troja et al., GCN 29472) errorbox  25 sec after notice time and 43 sec after trigger time at 2021-02-11 08:44:02 UT, with upper limit up to  17.4 mag. The observations began at zenith distance = 52 deg. The sun  altitude  is -17.9 deg. 

The galactic latitude b = -11 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1544962

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      49 |         MASTER-OAFA |   C |    10 | 15.3 |        
      64 |         MASTER-OAFA |   C |    40 | 16.0 |  Coadd 
     379 |         MASTER-OAFA |   C |   670 | 17.1 |  Coadd 
      79 |         MASTER-OAFA |   C |    10 | 15.3 |        
     113 |         MASTER-OAFA |   C |    20 | 15.7 |        
     158 |         MASTER-OAFA |   C |    30 | 15.9 |        
     203 |         MASTER-OAFA |   C |   120 | 16.5 |  Coadd 
     212 |         MASTER-OAFA |   C |    40 | 16.0 |        
     277 |         MASTER-OAFA |   C |    50 | 16.1 |        
     352 |         MASTER-OAFA |   C |    60 | 16.2 |        
     442 |         MASTER-OAFA |   C |   240 | 16.7 |  Coadd 
     441 |         MASTER-OAFA |   C |    80 | 16.2 |        
     551 |         MASTER-OAFA |   C |   100 | 16.3 |        
     680 |         MASTER-OAFA |   C |   120 | 16.4 |        
     845 |         MASTER-OAFA |   C |   450 | 16.9 |  Coadd 
     835 |         MASTER-OAFA |   C |   150 | 16.5 |        
    1019 |         MASTER-OAFA |   C |   180 | 16.5 |        
    1219 |         MASTER-OAFA |   C |   180 | 16.3 |        
    1399 |         MASTER-OAFA |   C |   540 | 16.7 |  Coadd 
    1419 |         MASTER-OAFA |   C |   180 | 16.2 |        
    1618 |         MASTER-OAFA |   C |   180 | 16.1 |        
    1818 |         MASTER-OAFA |   C |   180 | 15.9 |        
    1998 |         MASTER-OAFA |   C |   540 | 16.0 |  Coadd 
    2017 |         MASTER-OAFA |   C |   180 | 15.6 |        
    2217 |         MASTER-OAFA |   C |   180 | 15.2 |        
   84463 |         MASTER-OAFA |   C |   180 | 17.2 |        
   84868 |         MASTER-OAFA |   C |   180 | 17.4 |        
   85754 |         MASTER-OAFA |   C |   180 | 17.3 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3761
TYPE = 35
DAYS = 0.5


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) was pointed to the SWIFT GRB 210211A ( E. Troja et al., GCN 29472) errorbox  25 sec after notice time and 43 sec after trigger time at 2021-02-11 08:44:02 UT, with upper limit up to  17.1 mag. The observations began at zenith distance = 52 deg. The sun  altitude  is -17.9 deg. 

The galactic latitude b = -11 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1544962

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      49 |         MASTER-OAFA |   C |    10 | 15.3 |        
      64 |         MASTER-OAFA |   C |    40 | 16.0 |  Coadd 
     379 |         MASTER-OAFA |   C |   670 | 17.1 |  Coadd 
      79 |         MASTER-OAFA |   C |    10 | 15.3 |        
     113 |         MASTER-OAFA |   C |    20 | 15.7 |        
     158 |         MASTER-OAFA |   C |    30 | 15.9 |        
     203 |         MASTER-OAFA |   C |   120 | 16.5 |  Coadd 
     212 |         MASTER-OAFA |   C |    40 | 16.0 |        
     277 |         MASTER-OAFA |   C |    50 | 16.1 |        
     352 |         MASTER-OAFA |   C |    60 | 16.2 |        
     442 |         MASTER-OAFA |   C |   240 | 16.7 |  Coadd 
     441 |         MASTER-OAFA |   C |    80 | 16.2 |        
     551 |         MASTER-OAFA |   C |   100 | 16.3 |        
     680 |         MASTER-OAFA |   C |   120 | 16.4 |        
     845 |         MASTER-OAFA |   C |   450 | 16.9 |  Coadd 
     835 |         MASTER-OAFA |   C |   150 | 16.5 |        
    1019 |         MASTER-OAFA |   C |   180 | 16.5 |        
    1219 |         MASTER-OAFA |   C |   180 | 16.3 |        
    1399 |         MASTER-OAFA |   C |   540 | 16.7 |  Coadd 
    1419 |         MASTER-OAFA |   C |   180 | 16.2 |        
    1618 |         MASTER-OAFA |   C |   180 | 16.1 |        
    1818 |         MASTER-OAFA |   C |   180 | 15.9 |        
    1998 |         MASTER-OAFA |   C |   540 | 16.0 |  Coadd 
    2017 |         MASTER-OAFA |   C |   180 | 15.6 |        
    2217 |         MASTER-OAFA |   C |   180 | 15.2 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3758
TYPE = 35
DAYS = 0.1


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) was pointed to the SWIFT GRB 210211A ( E. Troja et al., GCN 29472) errorbox  25 sec after notice time and 43 sec after trigger time at 2021-02-11 08:44:02 UT, with upper limit up to  17.1 mag. The observations began at zenith distance = 52 deg. The sun  altitude  is -17.9 deg. 

The galactic latitude b = -11 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1544962

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      49 |         MASTER-OAFA |   C |    10 | 15.3 |        
      64 |         MASTER-OAFA |   C |    40 | 16.0 |  Coadd 
     379 |         MASTER-OAFA |   C |   670 | 17.1 |  Coadd 
      79 |         MASTER-OAFA |   C |    10 | 15.3 |        
     113 |         MASTER-OAFA |   C |    20 | 15.7 |        
     158 |         MASTER-OAFA |   C |    30 | 15.9 |        
     203 |         MASTER-OAFA |   C |   120 | 16.5 |  Coadd 
     212 |         MASTER-OAFA |   C |    40 | 16.0 |        
     277 |         MASTER-OAFA |   C |    50 | 16.1 |        
     352 |         MASTER-OAFA |   C |    60 | 16.2 |        
     442 |         MASTER-OAFA |   C |   240 | 16.7 |  Coadd 
     441 |         MASTER-OAFA |   C |    80 | 16.2 |        
     551 |         MASTER-OAFA |   C |   100 | 16.3 |        
     680 |         MASTER-OAFA |   C |   120 | 16.4 |        
     845 |         MASTER-OAFA |   C |   450 | 16.9 |  Coadd 
     835 |         MASTER-OAFA |   C |   150 | 16.5 |        
    1019 |         MASTER-OAFA |   C |   180 | 16.5 |        
    1219 |         MASTER-OAFA |   C |   180 | 16.3 |        
    1399 |         MASTER-OAFA |   C |   540 | 16.7 |  Coadd 
    1419 |         MASTER-OAFA |   C |   180 | 16.2 |        
    1618 |         MASTER-OAFA |   C |   180 | 16.1 |        
    1818 |         MASTER-OAFA |   C |   180 | 15.9 |        
    1998 |         MASTER-OAFA |   C |   540 | 16.0 |  Coadd 
    2017 |         MASTER-OAFA |   C |   180 | 15.6 |        
    2217 |         MASTER-OAFA |   C |   180 | 15.2 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3756
TYPE = 35
DAYS = 0


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) was pointed to the SWIFT GRB210211.36 (trigger No 1032024,17h 57m 43.92s , -46d 17m 56.4s, R=0.05) errorbox  25 sec after notice time and 43 sec after trigger time at 2021-02-11 08:44:02 UT, with upper limit up to  15.3 mag. The observations began at zenith distance = 52 deg. The sun  altitude  is -17.9 deg. 

The galactic latitude b = -11 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1544962

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      49 |         MASTER-OAFA |   C |    10 | 15.3 |        
      79 |         MASTER-OAFA |   C |    10 | 15.3 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3755
TYPE = 35
DAYS = 0


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) was pointed to the SWIFT GRB210211.36 (trigger No 1032024,17h 57m 43.92s , -46d 17m 56.4s, R=0.05) errorbox  25 sec after notice time and 43 sec after trigger time at 2021-02-11 08:44:02 UT, with upper limit up to  15.3 mag. The observations began at zenith distance = 52 deg. The sun  altitude  is -17.9 deg. 

The galactic latitude b = -11 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1544962

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      49 |         MASTER-OAFA |   C |    10 | 15.3 |        
      79 |         MASTER-OAFA |   C |    10 | 15.3 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3754
TYPE = 34
DAYS = 0


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) was pointed to the SWIFT GRB210211.36 (trigger No 1032024,17h 57m 43.92s , -46d 17m 56.4s, R=0.05) errorbox  25 sec after notice time and 43 sec after trigger time at 2021-02-11 08:44:02 UT, with upper limit up to  15.3 mag. The observations began at zenith distance = 52 deg. The sun  altitude  is -17.9 deg. 

The galactic latitude b = -11 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1544962

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      49 |         MASTER-OAFA |   C |    10 | 15.3 |        
      79 |         MASTER-OAFA |   C |    10 | 15.3 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2024