RA/DEC (2000)
22:39:15.249 -12:45:13.32
339.813537 -12.7537
Type
---
Redshift
Discovery Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-04-25 18:55:28.992
TNS AT
Y
Public
Y
Discovery Mag
19.25
Filter
L-GOTO
Reporter/s
G. Ramsay, D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, R. Starling, B. Gompertz, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Light curves

 ▌GOTO-S_GOTO-3_L
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG3_BlackGEM-Cam3_BG-q
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
No Data
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-12-18 10:24:48 - 2026-04-25 18:55:29 2461027.933895 - 2461156.288535 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
578292 2026-04-25 18:55:29 2461156.288535 19.25 0.1 ABMag L-GOTO GOTO-S_GOTO-3 180
578291 2025-12-18 10:24:48 2461027.933895 20 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
cyan-ATLAS ATLAS-CHL_ATLAS-04 2026-05-14 10:16:37 - 2026-05-17 07:51:53 2461174.92821 - 2461177.8277 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
583680 2026-05-17 07:51:53 2461177.8277 19.679 1.297 19.37 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
583679 2026-05-14 10:16:37 2461174.92821 16.26 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-09-16 01:05:06 - 2025-09-16 01:05:06 2460934.5452083 - 2460934.5452083 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
583872 2025-09-16 01:05:06 2460934.5452083 20.29 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2026-04-28 09:58:37 - 2026-04-28 09:58:37 2461158.915706 - 2461158.915706 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
583873 2026-04-28 09:58:37 2461158.915706 19.23 0.08 20.22 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
304545 2026-05-19 12:55:02 BlackGEM_Bot1 L. Landsberg, H. Tranin, F. Stoppa et al. BlackGEM BlackGEM 22:39:15.249 -12:45:13.32 2026-04-28 09:58:37.000 19.23 BG-q-BlackGem PSN BGEM J223915.25-124513.3 BlackGEM N
304458 2026-05-18 18:26:38 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 22:39:15.244 -12:45:13.18 2026-05-17 07:51:53.280 19.679 cyan-ATLAS PSN ATLAS26fzc ATLAS N
301657 2026-04-27 12:11:37 GOTO_bot G. Ramsay, D. O'Neill, K. Ackley et al. GOTO GOTO 22:39:15.245 -12:45:12.93 2026-04-25 18:55:28.992 19.25 L-GOTO Other GOTO26dyf GOTO 2026TNSTR1842....1R N
No Data

Comments

TNS
System

Tue, 05/19/2026 - 12:55

Object coordinates updated

Object coordinates updated according to AT-report 304545 of Group BlackGEM
Previous RA, DEC: 22:39:15.244, -12:45:13.18 (339.8135175, -12.75366)
Updated RA, DEC: 22:39:15.249, -12:45:13.32 (339.813537, -12.7537)

TNS
System

Mon, 05/18/2026 - 18:26

Object coordinates updated

Object coordinates updated according to AT-report 304458 of Group ATLAS
Previous RA, DEC: 22:39:15.245, -12:45:12.93 (339.813521, -12.753592)
Updated RA, DEC: 22:39:15.244, -12:45:13.18 (339.8135175, -12.75366)