Lasair. A UK Alert Stream Broker and Transient Science Platform.

diaObjectId
313967766423470223

150.486048, 1.449015

Discovery Date: 2026-01-10 04:05:14 UTC

Discovery MJD: 61050.17

Disc r-Flux: -1821.04±372.40

Latest Date: 2026-02-24 03:54:45 UTC

Latest MJD: 61095.16

Latest r-Flux: -1874.95±298.40

Peak Flux	2348.11±463.46 (i-band)
UTC at Peak	2026-02-19 05:15:10
MJD at Peak	61090.22
Detection Count	8
Equatorial Lon,Lat	10:01:56.651, 01:26:56.452
Galactic Lon,Lat	237.937567, 41.975675
Ecliptic Lon,Lat	152.034215, -9.944594
E(B-V) Extinction	0.021675

Duplicate diaObjects

Transient Name Server

AT2025gdh

The transient was discovered on 18th February 2025 at 04:53:57 (MJD 60724.20) by DESIRT as C202502181001566p012655 with a discovery magnitude of i = 22.38..

Sherlock Contextual Classification

Prediction: Nuclear Transient

The transient is synonymous with SDSSJ100156.61%2B012655.6; a J=15.86 mag galaxy found in the NED/2MASS catalogues. Its located 1.2" (2.0 Kpc) from the galaxy core. A host z=0.086 implies a m - M = 37.98.

Difference Image Lightcurve

Access the data from this plot in the LSST Alert Packet Data table below.

Learn how to interact with this plot.

Context Map

Recent Image Stamps

target

reference

difference

External Resources

Alerce Antares DECaLS Fink NED SIMBAD ZTF

LSST Alert Packet Data

MJD	UTC	band	target diff flux	reliability	images	alert packet
61095.163030	2026-02-24 03:54:45	r	-1875 ± 298	0.13	target ref diff	data
61095.098459	2026-02-24 02:21:46	i	2111 ± 408	0.16	target ref diff	data
61091.210659	2026-02-20 05:03:20	g	1356 ± 279	0.13	target ref diff	data
61091.199847	2026-02-20 04:47:46	i	2055 ± 362	0.11	target ref diff	data
61090.242642	2026-02-19 05:49:24	r	1897 ± 397	0.17	target ref diff	data
61090.218877	2026-02-19 05:15:10	i	2348 ± 463	0.11	target ref diff	data
61050.175087	2026-01-10 04:12:07	z	-3639 ± 695	0.15	target ref diff	data
61050.170303	2026-01-10 04:05:14	r	-1821 ± 372	0.17	target ref diff	data

MJD	filter	magpsf	magpsf_error	flux_status

Need Help?

Start with our documentation on readthedocs, you might find the FAQ section especially useful.

If you still have questions, want to report a bug, or make a feature request, please reach out to us on the Lasair topic on the Rubin Community pages.