- vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 9059] MASTER OT J191841.98+444914.5 outburst (AM CVn)
by Taichi Kato 15 Feb '22

15 Feb '22

MASTER OT J191841.98+444914.5 outburst (AM CVn) Likely superoutburst. YYYYMMDD(UT) mag observer 20220201.8847 <148c (Yutaka Maeda) 20220214.5170 15.999zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 9058] ZTF J175758.83+242427.3 likely superoutburst (eclipsing)
by Taichi Kato 15 Feb '22

15 Feb '22

ZTF J175758.83+242427.3 likely superoutburst (eclipsing) Short (<100 d) supercycle. YYYYMMDD(UT) mag observer 20220213.4770 15.805zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220213.4952 15.977zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 9057] CRTS J172515.5+073249: relatively rare outburst
by Taichi Kato 15 Feb '22

15 Feb '22

CRTS J172515.5+073249: relatively rare outburst YYYYMMDD(UT) mag observer 20210927.1740 20.916zg (Zwicky Transient Facility (Masci et al., 2019)) 20211014.8681 <177C (Eddy Muyllaert) 20211021.8472 <172C (Eddy Muyllaert) 20211103.8333 <163C (Eddy Muyllaert) 20220107.2938 <163C (Eddy Muyllaert) 20220213.4971 15.400zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 9056] TCP J14420760-1758238: periodic variations
by Taichi Kato 14 Feb '22

14 Feb '22

TCP J14420760-1758238: periodic variations Observations by Itoh-san and Kiyota-san recorded periodic variations with a period of 0.0353(6) d and an amplitude of 0.04 mag. The profile somewhat looks like that of early superhumps. Since this period is too short for a hydrogen-rich WZ Sge star, further observations are needed to clarify the nature.

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[vsnet-newvar 9055] ASASSN-17jn long outburst
by Taichi Kato 13 Feb '22

13 Feb '22

ASASSN-17jn long outburst YYYYMMDD(UT) mag observer 20220121.5572 16.879zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220121.5597 16.909zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220121.5648 16.921zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220121.5673 16.918zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220211.5095 17.610zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 9054] ASASSN-18vi most likely superoutburst (AM CVn)
by Taichi Kato 13 Feb '22

13 Feb '22

ASASSN-18vi most likely superoutburst (AM CVn) Supercycle about two years. Multiple rebrightenings in the past superoutbursts in the ZTF data. YYYYMMDD(UT) mag observer 20220211.5105 16.524zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220211.5317 16.842zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 9053] CRTS J035318.1-034847 possible superoutburst
by Taichi Kato 13 Feb '22

13 Feb '22

CRTS J035318.1-034847 possible superoutburst Subtype based on past ZTF data. YYYYMMDD(UT) mag observer 20220212.1527 15.614zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 9052] Re: TCP J14420760-1758238
by Taichi Kato 12 Feb '22

12 Feb '22

Re: TCP J14420760-1758238 Superoutburst reaching V=12.0 in 2001 in ASAS-3.

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[vsnet-newvar 9051] TCP J14420760-1758238
by Naoto Kojiguchi 11 Feb '22

11 Feb '22

TCP J14420760-1758238 Large outburst amplitude of 7 mag. Possible possible WZ Sge star. TCP J14420760-1758238 2022 02 11.8211* 14 42 07.60 -17 58 23.8 12.2 U Lib 9 0 2022 02 11.821 Discovered by Tadashi Kojima, Tsumagoi,Gunma-ken, Japan, on three frames(5_s exp) under limiting mag.= 13.5 taken by Canon EOS 6D + 200mm f/3.2 lens. Nothing is visible at this location taken on 2022 Feb10.809 UT under limiting mag.= 13.8,with same instrument http://www.cbat.eps.harvard.edu/unconf/followups/J14420760-1758238.html ASASSN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/d7bb8ce8-8af3-4a96-9e65-41e8d… #r=3.5arcsec 144207.822 -175822.608 PS1_DR1_86432205326582816 g=19.0939(0.011) r=19.0499(0.0136) i=18.9061(0.0115) z=18.62(0.0168) y=18.3811(0.0458) 144207.897 -175823.563 GALEXJ144207.8-175823 FUV=20.349(0.2513) NUV=19.912(0.0981) 144207.859 -175823.036 Gaia_DR2_6285355265244126080 Plx=3.4238(0.3135) pmRA=-35.799(0.743) pmDE=28.756(0.552) G=18.8162(0.0080) BP-RP=0.4707 144207.860 -175823.027 Gaia_EDR3_6285355265244126080 Plx=3.4024(0.2229) PM=45.966 pmRA=-36.297(0.228) pmDE=28.203(0.204) G=18.697046 (0.013996) BP-RP=0.537893

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[vsnet-newvar 9050] ASASSN-20pv: long rebrightening
by Taichi Kato 10 Feb '22

10 Feb '22

ASASSN-20pv: long rebrightening The object (AM CVn) is now entering a long (standstill-like) rebrightening as in the 2020-2021 superoutburst. The CCD observers are Berto Monard and Josch Hambsch.

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