MASTER Net MASTER Database: GRB250428.25 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 GRB250428.25
Trignum 1745820331
Trigger time 2025-04-28 06:05:31
Notice time 2025-04-29 17:34:13.432912
Coord, eb (14h 41m 54.96s , +02d 05m 24.0s) , 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
2856874 2025-04-29 17:34:13.432912 14h 41m 54.96s +02d 05m 24.0s EP 0.01 alert 1745820331 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

2025-04-28 06:05:31 (JD 2460793.753831)

Siderial time 23.031206 h

Ra 14:41:54.96 Dec 02:05:24.00
(220.479000d, 2.090000d)

Rise 2025-04-28 18:27:41

Transit 2025-04-29 00:42:59

Set 2025-04-28 07:02:13

Amur

Object: Altitude: -29.71 Azimuth: 221.11

Sun: Altitude: 41.56 Azimuth: 56.12

Moon: Altitude: 48.85 Azimuth: 54.85

Tunka

Object: Altitude: -35.38 Azimuth: 192.83

Sun: Altitude: 50.35 Azimuth: 23.83

Moon: Altitude: 56.90 Azimuth: 18.20

Kislovodsk

Object: Altitude: -25.96 Azimuth: 121.48

Sun: Altitude: 41.54 Azimuth: 293.35

Moon: Altitude: 42.04 Azimuth: 283.52

Tavrida

Object: Altitude: -20.13 Azimuth: 114.69

Sun: Altitude: 35.48 Azimuth: 286.49

Moon: Altitude: 35.87 Azimuth: 277.46

SAAO

Object: Altitude: -16.43 Azimuth: 81.84

Sun: Altitude: 11.03 Azimuth: 245.28

Moon: Altitude: 3.86 Azimuth: 243.68

IAC

Object: Altitude: 17.80 Azimuth: 82.56

Sun: Altitude: -5.34 Azimuth: 250.80

Moon: Altitude: -6.41 Azimuth: 243.49

Argentina

Object: Altitude: 52.03 Azimuth: 149.79

Sun: Altitude: -62.52 Azimuth: 304.71

Moon: Altitude: -69.80 Azimuth: 302.35

Mexico

Object: Altitude: 53.78 Azimuth: 318.60

Sun: Altitude: -41.60 Azimuth: 156.33

Moon: Altitude: -34.62 Azimuth: 153.44

Ural

Object: Altitude: -25.15 Azimuth: 142.94

Sun: Altitude: 42.09 Azimuth: 322.00

Moon: Altitude: 45.43 Azimuth: 312.93

Vostryakovo

Object: Altitude: -17.28 Azimuth: 121.19

Sun: Altitude: 33.80 Azimuth: 296.90

Moon: Altitude: 35.87 Azimuth: 288.31

Gal. latitude: 52.985685 Gal. longitude: 354.736152

Dist. to Sun: 163.039761

Dist. to Moon: 158.179720

Moon coord.: (40.474052 d, 19.730280 d)

Sun coord.: (35.496311 d, 14.135469 d)

Lunar disk: 0.004133

Lunar phase: 172.628044

Lunar bright limb: 221.236332

No SN in this field

2025-04-29 17:34:13 (JD 2460795.232095)

Siderial time 10.606676 h

Ra 14:41:54.96 Dec 02:05:24.00
(220.479000d, 2.090000d)

Rise 2025-04-30 18:19:49

Transit 2025-05-01 00:35:07

Set 2025-04-30 06:54:22

Amur

Object: Altitude: 36.08 Azimuth: 36.14

Sun: Altitude: -19.25 Azimuth: 212.97

Moon: Altitude: -13.36 Azimuth: 184.81

Tunka

Object: Altitude: 40.16 Azimuth: 5.32

Sun: Altitude: -23.26 Azimuth: 188.06

Moon: Altitude: -10.21 Azimuth: 162.55

Kislovodsk

Object: Altitude: 25.08 Azimuth: 293.10

Sun: Altitude: -14.33 Azimuth: 127.20

Moon: Altitude: 10.93 Azimuth: 115.92

Tavrida

Object: Altitude: 19.02 Azimuth: 286.69

Sun: Altitude: -8.73 Azimuth: 120.73

Moon: Altitude: 16.92 Azimuth: 110.35

SAAO

Object: Altitude: 8.82 Azimuth: 261.83

Sun: Altitude: -20.60 Azimuth: 94.61

Moon: Altitude: -4.92 Azimuth: 118.02

IAC

Object: Altitude: -21.20 Azimuth: 255.33

Sun: Altitude: 25.96 Azimuth: 93.22

Moon: Altitude: 53.46 Azimuth: 96.60

Argentina

Object: Altitude: -58.32 Azimuth: 337.35

Sun: Altitude: 41.35 Azimuth: 160.17

Moon: Altitude: 30.98 Azimuth: 192.14

Mexico

Object: Altitude: -46.65 Azimuth: 134.42

Sun: Altitude: 61.21 Azimuth: 299.00

Moon: Altitude: 43.95 Azimuth: 262.25

Ural

Object: Altitude: 26.77 Azimuth: 314.66

Sun: Altitude: -12.43 Azimuth: 144.50

Moon: Altitude: 8.42 Azimuth: 126.26

Vostryakovo

Object: Altitude: 17.68 Azimuth: 293.22

Sun: Altitude: -5.00 Azimuth: 124.89

Moon: Altitude: 18.29 Azimuth: 109.82

Gal. latitude: 52.985685 Gal. longitude: 354.736152

Dist. to Sun: 162.941117

Dist. to Moon: 143.882241

Moon coord.: (63.747111 d, 26.176991 d)

Sun coord.: (36.901799 d, 14.596933 d)

Lunar disk: 0.057205

Lunar phase: 152.324114

Lunar bright limb: 250.558520

No SN in this field

2025-04-29 18:34:13 (JD 2460795.273762)

Siderial time 11.609414 h

Ra 14:41:54.96 Dec 02:05:24.00
(220.479000d, 2.090000d)

Rise 2025-04-30 18:19:49

Transit 2025-05-01 00:35:07

Set 2025-04-30 06:54:22

Amur

Object: Altitude: 29.39 Azimuth: 52.17

Sun: Altitude: -13.11 Azimuth: 226.67

Moon: Altitude: -11.44 Azimuth: 197.85

Tunka

Object: Altitude: 37.77 Azimuth: 24.45

Sun: Altitude: -20.73 Azimuth: 203.48

Moon: Altitude: -11.77 Azimuth: 175.57

Kislovodsk

Object: Altitude: 34.50 Azimuth: 306.63

Sun: Altitude: -22.16 Azimuth: 140.08

Moon: Altitude: 2.10 Azimuth: 125.36

Tavrida

Object: Altitude: 28.85 Azimuth: 299.16

Sun: Altitude: -17.25 Azimuth: 132.80

Moon: Altitude: 7.76 Azimuth: 119.63

SAAO

Object: Altitude: 21.21 Azimuth: 253.00

Sun: Altitude: -33.27 Azimuth: 86.63

Moon: Altitude: -16.01 Azimuth: 111.34

IAC

Object: Altitude: -8.20 Azimuth: 263.14

Sun: Altitude: 12.85 Azimuth: 99.85

Moon: Altitude: 41.01 Azimuth: 101.46

Argentina

Object: Altitude: -51.06 Azimuth: 314.36

Sun: Altitude: 35.27 Azimuth: 143.33

Moon: Altitude: 31.83 Azimuth: 177.08

Mexico

Object: Altitude: -54.16 Azimuth: 154.99

Sun: Altitude: 70.81 Azimuth: 326.52

Moon: Altitude: 56.24 Azimuth: 268.28

Ural

Object: Altitude: 31.72 Azimuth: 330.95

Sun: Altitude: -16.28 Azimuth: 158.95

Moon: Altitude: 2.73 Azimuth: 137.88

Vostryakovo

Object: Altitude: 25.05 Azimuth: 307.30

Sun: Altitude: -11.36 Azimuth: 138.07

Moon: Altitude: 11.03 Azimuth: 120.82

Gal. latitude: 52.985685 Gal. longitude: 354.736152

Dist. to Sun: 162.936643

Dist. to Moon: 143.378264

Moon coord.: (64.425318 d, 26.303619 d)

Sun coord.: (36.941483 d, 14.609815 d)

Lunar disk: 0.059568

Lunar phase: 151.746880

Lunar bright limb: 250.995934

No SN in this field

2025-05-01 12:31:30 (JD 2460797.021875)

Siderial time 5.679004 h

Ra 14:41:54.96 Dec 02:05:24.00
(220.479000d, 2.090000d)

Rise 2025-05-02 18:11:58

Transit 2025-05-03 00:27:15

Set 2025-05-02 06:46:30

Amur

Object: Altitude: 28.42 Azimuth: 305.96

Sun: Altitude: -14.22 Azimuth: 136.67

Moon: Altitude: 26.47 Azimuth: 103.61

Tunka

Object: Altitude: 13.98 Azimuth: 284.81

Sun: Altitude: -1.06 Azimuth: 116.49

Moon: Altitude: 41.81 Azimuth: 84.22

Kislovodsk

Object: Altitude: -26.27 Azimuth: 238.08

Sun: Altitude: 37.95 Azimuth: 73.27

Moon: Altitude: 74.60 Azimuth: 350.13

Tavrida

Object: Altitude: -30.62 Azimuth: 229.77

Sun: Altitude: 43.28 Azimuth: 64.67

Moon: Altitude: 71.41 Azimuth: 326.75

SAAO

Object: Altitude: -49.94 Azimuth: 313.40

Sun: Altitude: 34.59 Azimuth: 144.40

Moon: Altitude: 24.73 Azimuth: 203.83

IAC

Object: Altitude: -58.29 Azimuth: 161.86

Sun: Altitude: 75.10 Azimuth: 330.43

Moon: Altitude: 36.12 Azimuth: 253.83

Argentina

Object: Altitude: -24.51 Azimuth: 76.38

Sun: Altitude: 15.54 Azimuth: 240.56

Moon: Altitude: -34.41 Azimuth: 255.14

Mexico

Object: Altitude: 12.46 Azimuth: 84.87

Sun: Altitude: -1.67 Azimuth: 251.18

Moon: Altitude: -26.14 Azimuth: 203.58

Ural

Object: Altitude: -10.67 Azimuth: 248.98

Sun: Altitude: 24.31 Azimuth: 80.23

Moon: Altitude: 59.82 Azimuth: 25.10

Vostryakovo

Object: Altitude: -21.85 Azimuth: 229.46

Sun: Altitude: 36.20 Azimuth: 60.63

Moon: Altitude: 62.58 Azimuth: 345.22

Gal. latitude: 52.985685 Gal. longitude: 354.736152

Dist. to Sun: 162.667137

Dist. to Moon: 121.069770

Moon coord.: (93.060743 d, 28.527831 d)

Sun coord.: (38.609774 d, 15.143872 d)

Lunar disk: 0.191801

Lunar phase: 128.053641

Lunar bright limb: 267.238071

No SN in this field
Recent coverage and limits telegrams

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

  ID = 12468
TYPE = 35
DAYS = 0


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the EP250428b ( EP Team et al., GCN 40277) errorbox  285 sec after notice time and 1 days 41608 sec after trigger time at 2025-04-29 17:38:59 UT, with upper limit up to  17.6 mag. Observations started at twilight.  The observations began at zenith distance = 64 deg. The sun  altitude  is -15.2 deg. 

The galactic latitude b = 53 deg., longitude l = 355 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2856874

We obtain a following upper limits.  

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

  128038 | 2025-04-29 17:38:59 |   MASTER-Kislovodsk | (14h 39m 56.30s , +02d 18m 36.2s) |   C |    60 | 17.1 |        
  128993 | 2025-04-29 17:54:54 |   MASTER-Kislovodsk | (14h 39m 58.93s , +02d 19m 39.5s) |   C |    60 | 17.5 |        
  129172 | 2025-04-29 17:57:52 |   MASTER-Kislovodsk | (14h 39m 52.83s , +02d 19m 59.5s) |   C |    60 | 17.6 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12467
TYPE = 35
DAYS = 0


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the EP250428b ( EP Team et al., GCN 40277) errorbox  285 sec after notice time and 1 days 41608 sec after trigger time at 2025-04-29 17:38:59 UT, with upper limit up to  17.6 mag. Observations started at twilight.  The observations began at zenith distance = 64 deg. The sun  altitude  is -15.2 deg. 

The galactic latitude b = 53 deg., longitude l = 355 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2856874

We obtain a following upper limits.  

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

  128038 | 2025-04-29 17:38:59 |   MASTER-Kislovodsk | (14h 39m 56.30s , +02d 18m 36.2s) |   C |    60 | 17.1 |        
  128993 | 2025-04-29 17:54:54 |   MASTER-Kislovodsk | (14h 39m 58.93s , +02d 19m 39.5s) |   C |    60 | 17.5 |        
  129172 | 2025-04-29 17:57:52 |   MASTER-Kislovodsk | (14h 39m 52.83s , +02d 19m 59.5s) |   C |    60 | 17.6 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12466
TYPE = 34
DAYS = 0


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the EP250428b ( EP Team et al., GCN 40277) errorbox  285 sec after notice time and 1 days 41608 sec after trigger time at 2025-04-29 17:38:59 UT, with upper limit up to  17.6 mag. Observations started at twilight.  The observations began at zenith distance = 64 deg. The sun  altitude  is -15.2 deg. 

The galactic latitude b = 53 deg., longitude l = 355 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2856874

We obtain a following upper limits.  

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

  128038 | 2025-04-29 17:38:59 |   MASTER-Kislovodsk | (14h 39m 56.30s , +02d 18m 36.2s) |   C |    60 | 17.1 |        
  128993 | 2025-04-29 17:54:54 |   MASTER-Kislovodsk | (14h 39m 58.93s , +02d 19m 39.5s) |   C |    60 | 17.5 |        
  129172 | 2025-04-29 17:57:52 |   MASTER-Kislovodsk | (14h 39m 52.83s , +02d 19m 59.5s) |   C |    60 | 17.6 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2025