TNS Astronomical Transient Report No. 287780 [ 2026TNSTR.216....1K ]
Date Received (UTC): 2026-01-18 18:04:13
Date made public:
Sender: Denis Denisenko
Reporting Group: PALEO Discovery Data Source: PALEO
L. Konkov, D. Denisenko (Vorobyovy Gory Education Center) report/s the discovery of a new astronomical transient.
IAU Designation: AT 1990ar
Coordinates (J2000): RA = 23:18:33.250 (349.638542) DEC = +19:14:39.50 (19.244306)
Discovery date: 1990-07-31 10:05:00.000 (JD=2448103.9201389)
Potential host galaxy: WISEA J231833.06+191442.3
Remarks: Apparent supernova discovered by Leonid Konkov on the Blue DSS plate. The object is located 3" East and 3" South from the center of WISEA J231833.06+191442.3. Object is present on three POSS plates over 1.5 months fading from B=15.3 on 1990-07-31 to R=16.4 on 1990-09-13 (USNO-B1.0).
Photometry
Discovery (first detection):
Discovery date: 1990-07-31 10:05:00.000
Flux: 15.3 ABMag
Filter: B-Johnson
Instrument: Other
Telescope: Other
Remarks: POSS-II Blue photographic plate taken with the 48-inch Palomar Schmidt camera.
Last non-detection:
Archival info: Other
Remarks: Nothing but galaxy background is present at this position on the color-combined PanSTARRS-1 images (limiting magnitude 23.5).
Details of the new object can be viewed here: https://www.wis-tns.org/object/1990ar
Date Received (UTC): 2026-01-18 18:04:13
Date made public:
Sender: Denis Denisenko
Reporting Group: PALEO Discovery Data Source: PALEO
L. Konkov, D. Denisenko (Vorobyovy Gory Education Center) report/s the discovery of a new astronomical transient.
IAU Designation: AT 1990ar
Coordinates (J2000): RA = 23:18:33.250 (349.638542) DEC = +19:14:39.50 (19.244306)
Discovery date: 1990-07-31 10:05:00.000 (JD=2448103.9201389)
Potential host galaxy: WISEA J231833.06+191442.3
Remarks: Apparent supernova discovered by Leonid Konkov on the Blue DSS plate. The object is located 3" East and 3" South from the center of WISEA J231833.06+191442.3. Object is present on three POSS plates over 1.5 months fading from B=15.3 on 1990-07-31 to R=16.4 on 1990-09-13 (USNO-B1.0).
Photometry
Discovery (first detection):
Discovery date: 1990-07-31 10:05:00.000
Flux: 15.3 ABMag
Filter: B-Johnson
Instrument: Other
Telescope: Other
Remarks: POSS-II Blue photographic plate taken with the 48-inch Palomar Schmidt camera.
Last non-detection:
Archival info: Other
Remarks: Nothing but galaxy background is present at this position on the color-combined PanSTARRS-1 images (limiting magnitude 23.5).
Details of the new object can be viewed here: https://www.wis-tns.org/object/1990ar