MASTER Net MASTER Database: GRB250228.17 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 EP GRB250228.17
Trignum 1740715149
Trigger time 2025-02-28 03:59:09
Notice time 2025-02-28 07:15:48.672754
Coord, eb (06h 54m 25.68s , -41d 34m 51.6s) , 0.01
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
2794721 2025-02-28 07:15:48.672754 06h 54m 25.68s -41d 34m 51.6s EP 0.01 alert 1740715149 0 1115 alert

DAYS:

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

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

2025-02-28 03:59:09 (JD 2460734.666076)

Siderial time 17.042449 h

Ra 06:54:25.68 Dec -41:34:51.60
(103.607000d, -41.581000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -47.37 Azimuth: 283.02

Sun: Altitude: 31.53 Azimuth: 5.19

Moon: Altitude: 30.99 Azimuth: 2.55

Tunka

Object: Altitude: -62.70 Azimuth: 262.96

Sun: Altitude: 27.76 Azimuth: 337.56

Moon: Altitude: 26.59 Azimuth: 335.31

Kislovodsk

Object: Altitude: -72.96 Azimuth: 89.30

Sun: Altitude: 1.24 Azimuth: 282.36

Moon: Altitude: -0.80 Azimuth: 281.25

Tavrida

Object: Altitude: -66.90 Azimuth: 86.64

Sun: Altitude: -4.93 Azimuth: 276.42

Moon: Altitude: -6.97 Azimuth: 275.30

SAAO

Object: Altitude: -5.34 Azimuth: 31.95

Sun: Altitude: -5.86 Azimuth: 283.37

Moon: Altitude: -7.34 Azimuth: 285.16

IAC

Object: Altitude: -23.90 Azimuth: 54.14

Sun: Altitude: -46.83 Azimuth: 249.98

Moon: Altitude: -49.04 Azimuth: 248.93

Argentina

Object: Altitude: 53.00 Azimuth: 61.66

Sun: Altitude: -48.46 Azimuth: 18.61

Moon: Altitude: -47.20 Azimuth: 21.51

Mexico

Object: Altitude: 17.27 Azimuth: 3.15

Sun: Altitude: -35.29 Azimuth: 103.10

Moon: Altitude: -33.75 Azimuth: 101.00

Ural

Object: Altitude: -74.06 Azimuth: 163.32

Sun: Altitude: 7.10 Azimuth: 296.77

Moon: Altitude: 5.44 Azimuth: 295.14

Vostryakovo

Object: Altitude: -67.24 Azimuth: 115.68

Sun: Altitude: -3.89 Azimuth: 278.50

Moon: Altitude: -5.68 Azimuth: 277.02

Gal. latitude: -16.839838 Gal. longitude: 251.619102

Dist. to Sun: 107.826785

Dist. to Moon: 105.866287

Moon coord.: (343.286590 d, -8.659753 d)

Sun coord.: (341.033721 d, -8.023349 d)

Lunar disk: 0.000411

Lunar phase: 177.676138

Lunar bright limb: 285.754952

No SN in this field

2025-02-28 07:15:48 (JD 2460734.802639)

Siderial time 20.328922 h

Ra 06:54:25.68 Dec -41:34:51.60
(103.607000d, -41.581000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -19.76 Azimuth: 312.18

Sun: Altitude: 15.56 Azimuth: 55.88

Moon: Altitude: 17.80 Azimuth: 52.55

Tunka

Object: Altitude: -33.21 Azimuth: 296.80

Sun: Altitude: 25.18 Azimuth: 32.29

Moon: Altitude: 26.63 Azimuth: 28.27

Kislovodsk

Object: Altitude: -70.67 Azimuth: 272.68

Sun: Altitude: 31.01 Azimuth: 323.08

Moon: Altitude: 29.45 Azimuth: 318.95

Tavrida

Object: Altitude: -76.72 Azimuth: 262.51

Sun: Altitude: 26.28 Azimuth: 314.97

Moon: Altitude: 24.45 Azimuth: 311.17

SAAO

Object: Altitude: -15.92 Azimuth: 356.49

Sun: Altitude: 35.25 Azimuth: 255.69

Moon: Altitude: 31.89 Azimuth: 258.05

IAC

Object: Altitude: -60.25 Azimuth: 54.76

Sun: Altitude: -4.08 Azimuth: 276.86

Moon: Altitude: -7.40 Azimuth: 274.82

Argentina

Object: Altitude: 17.53 Azimuth: 51.46

Sun: Altitude: -36.91 Azimuth: 312.06

Moon: Altitude: -39.51 Azimuth: 315.76

Mexico

Object: Altitude: 2.32 Azimuth: 36.90

Sun: Altitude: -66.58 Azimuth: 169.41

Moon: Altitude: -65.46 Azimuth: 160.22

Ural

Object: Altitude: -58.57 Azimuth: 259.39

Sun: Altitude: 23.94 Azimuth: 344.47

Moon: Altitude: 23.53 Azimuth: 340.24

Vostryakovo

Object: Altitude: -70.31 Azimuth: 234.51

Sun: Altitude: 19.93 Azimuth: 321.70

Moon: Altitude: 18.71 Azimuth: 317.78

Gal. latitude: -16.839838 Gal. longitude: 251.619102

Dist. to Sun: 107.781255

Dist. to Moon: 105.347278

Moon coord.: (345.085623 d, -7.728873 d)

Sun coord.: (341.162069 d, -7.971710 d)

Lunar disk: 0.001162

Lunar phase: 176.093190

Lunar bright limb: 266.151521

No SN in this field

2025-02-28 08:15:48 (JD 2460734.844306)

Siderial time 21.331660 h

Ra 06:54:25.68 Dec -41:34:51.60
(103.607000d, -41.581000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -13.21 Azimuth: 321.70

Sun: Altitude: 7.11 Azimuth: 68.36

Moon: Altitude: 10.13 Azimuth: 65.08

Tunka

Object: Altitude: -25.27 Azimuth: 305.94

Sun: Altitude: 19.27 Azimuth: 47.03

Moon: Altitude: 21.67 Azimuth: 43.07

Kislovodsk

Object: Altitude: -59.89 Azimuth: 280.42

Sun: Altitude: 36.22 Azimuth: 339.82

Moon: Altitude: 35.47 Azimuth: 334.44

Tavrida

Object: Altitude: -66.05 Azimuth: 274.07

Sun: Altitude: 32.76 Azimuth: 330.36

Moon: Altitude: 31.56 Azimuth: 325.33

SAAO

Object: Altitude: -13.88 Azimuth: 345.05

Sun: Altitude: 47.13 Azimuth: 243.75

Moon: Altitude: 43.40 Azimuth: 247.13

IAC

Object: Altitude: -70.37 Azimuth: 42.77

Sun: Altitude: 8.91 Azimuth: 284.09

Moon: Altitude: 5.36 Azimuth: 281.44

Argentina

Object: Altitude: 7.95 Azimuth: 45.42

Sun: Altitude: -26.57 Azimuth: 299.48

Moon: Altitude: -30.14 Azimuth: 302.44

Mexico

Object: Altitude: -6.09 Azimuth: 44.37

Sun: Altitude: -64.81 Azimuth: 205.78

Moon: Altitude: -65.66 Azimuth: 195.40

Ural

Object: Altitude: -50.42 Azimuth: 272.81

Sun: Altitude: 25.01 Azimuth: 0.76

Moon: Altitude: 25.45 Azimuth: 355.90

Vostryakovo

Object: Altitude: -62.56 Azimuth: 255.24

Sun: Altitude: 24.28 Azimuth: 337.05

Moon: Altitude: 23.70 Azimuth: 332.25

Gal. latitude: -16.839838 Gal. longitude: 251.619102

Dist. to Sun: 107.767346

Dist. to Moon: 105.185109

Moon coord.: (345.633574 d, -7.442958 d)

Sun coord.: (341.201221 d, -7.955947 d)

Lunar disk: 0.001498

Lunar phase: 175.563637

Lunar bright limb: 263.039362

No SN in this field

2025-04-29 23:46:07 (JD 2460795.490359)

Siderial time 16.821979 h

Ra 06:54:25.68 Dec -41:34:51.60
(103.607000d, -41.581000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -49.44 Azimuth: 280.97

Sun: Altitude: 33.35 Azimuth: 288.55

Moon: Altitude: 22.97 Azimuth: 255.00

Tunka

Object: Altitude: -64.72 Azimuth: 259.74

Sun: Altitude: 18.03 Azimuth: 269.01

Moon: Altitude: 9.52 Azimuth: 238.07

Kislovodsk

Object: Altitude: -70.57 Azimuth: 87.23

Sun: Altitude: -21.07 Azimuth: 221.88

Moon: Altitude: -18.84 Azimuth: 188.73

Tavrida

Object: Altitude: -64.56 Azimuth: 84.71

Sun: Altitude: -24.03 Azimuth: 213.69

Moon: Altitude: -18.36 Azimuth: 180.72

SAAO

Object: Altitude: -3.82 Azimuth: 33.91

Sun: Altitude: -65.64 Azimuth: 312.32

Moon: Altitude: -77.89 Azimuth: 66.35

IAC

Object: Altitude: -21.56 Azimuth: 53.29

Sun: Altitude: -43.27 Azimuth: 154.44

Moon: Altitude: -17.02 Azimuth: 134.61

Argentina

Object: Altitude: 55.47 Azimuth: 61.55

Sun: Altitude: -23.00 Azimuth: 93.47

Moon: Altitude: -4.21 Azimuth: 119.23

Mexico

Object: Altitude: 17.36 Azimuth: 0.56

Sun: Altitude: 26.88 Azimuth: 91.51

Moon: Altitude: 58.06 Azimuth: 91.87

Ural

Object: Altitude: -73.42 Azimuth: 154.78

Sun: Altitude: -4.20 Azimuth: 234.53

Moon: Altitude: -3.17 Azimuth: 203.30

Vostryakovo

Object: Altitude: -65.52 Azimuth: 111.24

Sun: Altitude: -13.86 Azimuth: 215.23

Moon: Altitude: -7.62 Azimuth: 184.10

Gal. latitude: -16.839838 Gal. longitude: 251.619102

Dist. to Sun: 83.058260

Dist. to Moon: 76.012300

Moon coord.: (67.963268 d, 26.908110 d)

Sun coord.: (37.147836 d, 14.676663 d)

Lunar disk: 0.072530

Lunar phase: 148.753126

Lunar bright limb: 253.207681

No SN in this field

Recent coverage and limits telegrams

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

  ID = 12161
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 EP250228a ( EP Team et al., GCN 39525) errorbox  229 sec after notice time and 12029 sec after trigger time at 2025-02-28 07:19:38 UT, with upper limit up to  19.2 mag. The observations began at zenith distance = 74 deg. The sun  altitude  is -36.6 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) was pointed to the EP250228a errorbox  38599 sec after notice time and 50399 sec after trigger time at 2025-02-28 17:59:08 UT, with upper limit up to  18.0 mag. Observations started at twilight.  The observations began at zenith distance = 15 deg. The sun  altitude  is -10.0 deg. 

The galactic latitude b = -17 deg., longitude l = 252 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2794721

We obtain a following upper limits.  

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

   12059 | 2025-02-28 07:19:38 |         MASTER-OAFA | (06h 55m 12.36s , -41d 21m 41.5s) |   C |    60 | 19.2 |        
   13036 | 2025-02-28 07:35:55 |         MASTER-OAFA | (06h 55m 16.24s , -41d 21m 05.1s) |   C |    60 | 18.9 |        
   50429 | 2025-02-28 17:59:08 |         MASTER-SAAO | (06h 53m 31.85s , -41d 47m 52.7s) |   C |    60 | 17.6 |        
   50668 | 2025-02-28 18:03:07 |         MASTER-SAAO | (06h 53m 42.07s , -41d 46m 23.8s) |   C |    60 | 18.0 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12156
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 EP250228a ( EP Team et al., GCN 39525) errorbox  229 sec after notice time and 12029 sec after trigger time at 2025-02-28 07:19:38 UT, with upper limit up to  19.2 mag. The observations began at zenith distance = 74 deg. The sun  altitude  is -36.6 deg. 

The galactic latitude b = -17 deg., longitude l = 252 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2794721

We obtain a following upper limits.  

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

   12059 | 2025-02-28 07:19:38 |         MASTER-OAFA | (06h 55m 12.36s , -41d 21m 41.5s) |   C |    60 | 19.2 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12155
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 EP250228a ( EP Team et al., GCN 39525) errorbox  229 sec after notice time and 12029 sec after trigger time at 2025-02-28 07:19:38 UT, with upper limit up to  19.2 mag. The observations began at zenith distance = 74 deg. The sun  altitude  is -36.6 deg. 

The galactic latitude b = -17 deg., longitude l = 252 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2794721

We obtain a following upper limits.  

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

   12059 | 2025-02-28 07:19:38 |         MASTER-OAFA | (06h 55m 12.36s , -41d 21m 41.5s) |   C |    60 | 19.2 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12154
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 EP250228a ( EP Team et al., GCN 39525) errorbox  229 sec after notice time and 12029 sec after trigger time at 2025-02-28 07:19:38 UT, with upper limit up to  19.2 mag. The observations began at zenith distance = 74 deg. The sun  altitude  is -36.6 deg. 

The galactic latitude b = -17 deg., longitude l = 252 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2794721

We obtain a following upper limits.  

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

   12059 | 2025-02-28 07:19:38 |         MASTER-OAFA | (06h 55m 12.36s , -41d 21m 41.5s) |   C |    60 | 19.2 |        
Filter C is a clear (unfiltred) band. 


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



 

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