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[vsnet-campaign-dn 16862] MASTER OT J064725.70+491543.9 superoutburst
by Taichi Kato 18 Jan '23

18 Jan '23

MASTER OT J064725.70+491543.9 superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230107.3305 17.979zr (ZTF Alert DC mag (Masci+ 2019)) 20230107.7833 <146c (Yutaka Maeda) 20230108.6708 <165C (Masayuki Moriyama) 20230108.7384 <150c (Yutaka Maeda) 20230109.7793 <151c (Yutaka Maeda) 20230110.7574 146:cG (Yutaka Maeda) 20230116.622 137C (Mitsutaka Hiraga)

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[vsnet-campaign-dn 16861] TCP J06442271+1549388: new WZ Sge-type dwarf nova
by Taichi Kato 18 Jan '23

18 Jan '23

TCP J06442271+1549388: new WZ Sge-type dwarf nova Itoh-san and Kiyota-san have reported observations. The data show clear double-wave humps (amplitude 0.05 mag). The period was 0.0529(5) d (single-night baseline). Although The profile was somewhat different from those of typical WZ Sge-type early superhumps, the large outburst amplitude supports this classification.

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[vsnet-campaign-dn 16860] ASASSN-18gc outburst
by Taichi Kato 17 Jan '23

17 Jan '23

ASASSN-18gc outburst Bright outburst. SS Cyg star? YYYYMMDD(UT) mag observer 20230115.1704 15.57C (Masao Funada)

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[vsnet-campaign-dn 16859] TCP J06442271+1549388
by Taichi Kato 17 Jan '23

17 Jan '23

Re: Spectrum of TCP J06442271+1549388 As judged from broad absorption features of H beta and higher lines, H alpha appears to be filled by emission and only the emission core is visible. I also see He II and Bowen.

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[vsnet-campaign-dn 16858] TCP J06442271+1549388 location
by Taichi Kato 17 Jan '23

17 Jan '23

TCP J06442271+1549388 location Katsumi Yoshimoto has reported astrometry of this object to be 06h44m22s.67 +15 49' 35".5, in very good agreement with the Pan-STARRS1 location.

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[vsnet-campaign-dn 16857] ASASSN-22oh superhumps
by Taichi Kato 17 Jan '23

17 Jan '23

ASASSN-22oh superhumps Josch Hambsch's observations show that this object started showing ordinary superhumps on Jan. 14 (some hint on Jan. 13). The period (stage A) is 0.05539(8) d and the amplitude is relatively large (0.2 mag). Probably not an extreme WZ Sge star.

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[vsnet-campaign-dn 16856] NSV 4838 superoutburst
by Taichi Kato 16 Jan '23

16 Jan '23

NSV 4838 superoutburst (Time-resolved photometry not particularly requested) YYYYMMDD(UT) mag observer 20230107.867 <168C (Mitsutaka Hiraga) 20230107.9056 <148C (Masayuki Moriyama) 20230109.7233 <142c (Yutaka Maeda) 20230110.7021 146c (Yutaka Maeda) 20230110.7021 146c (Yutaka Maeda) 20230114.883 150C (Jeremy Shears) 20230115.010 15.02C (Gary Poyner)

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[vsnet-campaign-dn 16855] Very bright outburst of DQ Mus
by Taichi Kato 16 Jan '23

16 Jan '23

Very bright outburst of DQ Mus Well outside the formal range of variation. Could be a superoutburst (although I already assigned UGSS based on the past data). Time-resolved photometry is requested. YYYYMMDD(UT) mag observer 20230108.3259 17.711o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.3286 17.755o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.3336 17.921o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.3503 17.581o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230110.0848 16.093o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230110.0890 16.061o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230110.0966 16.038o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230110.1047 16.066o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.2979 15.333o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.2984 15.451o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3033 15.460o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3179 15.169o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3220 15.488o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3323 15.124o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3394 15.490o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3467 15.169o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230113.553 145 (Rod Stubbings) 20230114.555 144 (Rod Stubbings) \

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[vsnet-campaign-dn 16854] Re: Spectrum of PNV J00215475+5231007
by Taichi Kato 14 Jan '23

14 Jan '23

Re: Spectrum of PNV J00215475+5231007 Taguchi-san probably forgot to mention about He II and Bowen blend, which is frequently seen in (relatively) high-inclination WZ Sge stars in the earliest phase of outburst.

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[vsnet-campaign-dn 16853] ATLAS22bopd: more likely UG
by Taichi Kato 13 Jan '23

13 Jan '23

ATLAS22bopd: more likely UG ATLAS data: YYYYMMDD(UT) mag observer 20221231.1897 15.411o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221231.1992 15.400o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221231.2131 15.487o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221231.2185 15.447o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230101.9713 15.649o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230101.9749 15.668o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230101.9961 15.698o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230102.0034 15.672o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230104.1508 15.902o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230104.1526 15.925o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230104.1558 15.891o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230104.1612 15.878o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.1758 16.142o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.1785 16.124o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.1942 16.105o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.1997 16.221o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230109.9391 16.482o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230109.9446 16.536o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230109.9482 16.489o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230109.9816 16.424o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.1533 16.676o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.1565 16.685o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.1611 16.765o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) In quiescence 3 d before (ATLAS). GALEX ID: 063247.060 -722006.25 (2000.0) GALEX_DR5_6385763636743246280 NUV=22.251(0.362) FUV=21.743(0.489)

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