TNS Astronomical Transient Report No. 270790 [ 2025TNSTR3775....1O ]
Date Received (UTC): 2025-09-20 17:53:03
Date made public:
Sender: GOTO_bot
Reporting Group: GOTO Discovery Data Source: GOTO
D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025ycm
Discoverer internal name: GOTO25hkl
Coordinates (J2000): RA = 22:15:02.977 (333.762403) DEC = -21:18:09.17 (-21.302548)
Discovery date: 2025-09-20 10:45:35.712 (JD=2460938.948328)
Remarks: This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. The candidate was flagged by volunteers: Amoli Kakkar, Henryk Krawczyk, Cledison Marcos da Silva, Virgilio Gonano, M.T. Mazzucato
Photometry
Discovery (first detection):
Discovery date: 2025-09-20 10:45:35.712
Flux: 19.94 ABMag
Filter: L-GOTO
Instrument: GOTO-4
Telescope: GOTO-South
Last non-detection:
Last non-detection date: 2025-09-18 13:27:24
Limiting flux: 19.6 ABMag
Filter: L-GOTO
Instrument: GOTO-3
Telescope: GOTO-South
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025ycm
Date Received (UTC): 2025-09-20 17:53:03
Date made public:
Sender: GOTO_bot
Reporting Group: GOTO Discovery Data Source: GOTO
D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025ycm
Discoverer internal name: GOTO25hkl
Coordinates (J2000): RA = 22:15:02.977 (333.762403) DEC = -21:18:09.17 (-21.302548)
Discovery date: 2025-09-20 10:45:35.712 (JD=2460938.948328)
Remarks: This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. The candidate was flagged by volunteers: Amoli Kakkar, Henryk Krawczyk, Cledison Marcos da Silva, Virgilio Gonano, M.T. Mazzucato
Photometry
Discovery (first detection):
Discovery date: 2025-09-20 10:45:35.712
Flux: 19.94 ABMag
Filter: L-GOTO
Instrument: GOTO-4
Telescope: GOTO-South
Last non-detection:
Last non-detection date: 2025-09-18 13:27:24
Limiting flux: 19.6 ABMag
Filter: L-GOTO
Instrument: GOTO-3
Telescope: GOTO-South
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025ycm