TNS Astronomical Transient Report No. 302961 [ 2026TNSTR2027....1S ]

Date Received (UTC): 2026-05-10 14:11:35
Date made public:
Sender: Claudio Balcon
Reporting Group: None     Discovery Data Source: None

Kirill Sokolovsky, Katie Barnhart, Darien Perla, Vallia Antoniou, Elias Aydi (Texas Tech University) report/s the discovery of a new astronomical transient.

IAU Designation: AT 2026lxf
Coordinates (J2000): RA = 15:03:05.190 (225.771625) DEC = +22:02:04.10 (22.034472)
Discovery date: 2026-05-08 07:49:26.400 (JD=2461168.826)


Remarks: Dwarf nova candidate found with the NMW-TexasTech survey using two identical 135mm telephoto lenses + unfiltered QHY600M CMOS cameras. The transient was first detected on 2026-05-08.3260 UTC at CV=13.95 with one camera and confirmed in images taken with the second camera 78 minutes later on 2026-05-08.3803 at CV=14.01. The magnitude difference is not significant given the expected photometric uncertainty of 0.06 mag. The object was not detected above the magnitude limit of CV~15 on the images taken the previous night on 2026-05-07.4551. A blue Pan-STARRS 1 DR2 source PS1 134442257714871804 (g=21.38 +/-0.04, r=21.50 +/-0.05) is located at 15:03:05.16 +22:02:03.6 J2000, just 0.6" from the measured position of the transient (NMW-TexasTech image scale is 5.9"/pix). The plate-solved FITS images, finder charts and animations produced from the NMW-TexasTech images are available at https://tau.kirx.net/img/TCPJ15030519+2202041/ The NMW-TexasTech survey operates at TTU Preston Gott Skyview Observatory (Shallowater, Texas).

Photometry

Discovery (first detection):
Discovery date: 2026-05-08 07:49:26.400
Flux: 13.9 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: Dwarf nova candidate found with the NMW-TexasTech survey using two identical 135mm telephoto lenses + unfiltered QHY600M CMOS cameras. The transient was first detected on 2026-05-08.3260 UTC at CV=13.95 with one camera and confirmed in images taken with the second camera 78 minutes later on 2026-05-08.3803 at CV=14.01. The magnitude difference is not significant given the expected photometric uncertainty of 0.06 mag. The object was not detected above the magnitude limit of CV~15 on the images taken the previous night on 2026-05-07.4551. A blue Pan-STARRS 1 DR2 source PS1 134442257714871804 (g=21.38 +/-0.04, r=21.50 +/-0.05) is located at 15:03:05.16 +22:02:03.6 J2000, just 0.6" from the measured position of the transient (NMW-TexasTech image scale is 5.9"/pix). The plate-solved FITS images, finder charts and animations produced from the NMW-TexasTech images are available at https://tau.kirx.net/img/TCPJ15030519+2202041/ The NMW-TexasTech survey operates at TTU Preston Gott Skyview Observatory (Shallowater, Texas).

Last non-detection:
Last non-detection date: 2026-05-07 10:55:12
Limiting flux: 15 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: The object was not detected above the magnitude limit of CV~15 on the images taken the previous night on 2026-05-07.4551.

Details of the new object can be viewed here: https://www.wis-tns.org/object/2026lxf