[vsnet-outburst 27118] ASASSN-21gu

[Naoto Kojiguchi]

ASASSN-21gu

     Large outburst amplitude of 6 mag. No past outburst in ASASSN and PS1 data. Possible WZ Sge-type object.

ASASSN-21gu  --- ------- 23:5:46.46 29:54:15.8 2021-04-27.61 14.47 -------  CV candidate, matches to SDSS g=20.7, g>18.1 on 2021-04-23.62, g=14.8 on 2021-04-27.61.

ASASSN:
https://asas-sn.osu.edu/sky-patrol/coordinate/ca556f43-41c1-4b6b-85e8-fda46736a085

ZTF:
https://lasair.roe.ac.uk/object/ZTF21aaxntve/
https://alerce.online/object/ZTF21aaxntve/

IDs:
230546.503 +295414.971 PS1_143883464437035718 g=20.6705(0.0197) r=20.6494(0.0264) i=20.8514(0.0211) z=20.8185(0.0563)
230546.481 +295414.779 Gaia_DR3_1885681270773421952 Plx=1.6839(0.8335) PM=24.401 pmRA=20.311(1.054) pmDE=13.523(0.843) G=20.654251(0.009753) BP-RP=0.445787
230546.480 +295414.767 Gaia_DR2_1885681270773421952 Plx=1.8748(1.0178) pmRA=20.728(1.830) pmDE=14.262(1.791) G=20.7624(0.0113) BP-RP=0.2102
230546.491 +295414.969 SDSSJ230546.49+295414.9 u=20.754(0.063) g=20.658(0.023) r=20.715(0.032) i=20.794(0.052) z=21.172(0.275)

ASASSN-21gu 20210423.62 <181g ASN
ASASSN-21gu 20210427.487 15.494zr ZLR
ASASSN-21gu 20210427.61 148g ASN