February 2023 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 9786] SDSS J231226.62+544804.4: IW And star
by Taichi Kato 16 Feb '23

16 Feb '23

SDSS J231226.62+544804.4: IW And star Very clear in ZTF data. Deep minimum reached g=18.5.

1 0

[vsnet-newvar 9785] MASTER OT J051415.56+671120.3 rare outburst
by Taichi Kato 16 Feb '23

16 Feb '23

MASTER OT J051415.56+671120.3 rare outburst Known SU UMa star, but not well observed in the past. YYYYMMDD(UT) mag observer 20230130.5810 <164c (Yutaka Maeda) 20230202.5808 <155c (Yutaka Maeda) 20230204.572 <174C (Mitsutaka Hiraga) 20230205.5890 <155c (Yutaka Maeda) 20230207.567 <175C (Mitsutaka Hiraga) 20230208.5565 <143c (Yutaka Maeda) 20230210.5810 <161c (Yutaka Maeda) 20230214.5718 145c (Yutaka Maeda)

1 0

[vsnet-newvar 9784] MASTER OT J034045.31+471632.2 likely superoutburst
by Taichi Kato 16 Feb '23

16 Feb '23

MASTER OT J034045.31+471632.2 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230202.5421 <161c (Yutaka Maeda) 20230204.5175 <158c (Yutaka Maeda) 20230205.4875 <160c (Yutaka Maeda) 20230207.4999 <156c (Yutaka Maeda) 20230208.5181 <142c (Yutaka Maeda) 20230210.5418 <158c (Yutaka Maeda) 20230214.5328 152c (Yutaka Maeda) 20230214.5328 152c (Yutaka Maeda)

1 0

[vsnet-newvar 9783] CRTS J174033.4+414756 bright superoutburst continues
by Taichi Kato 16 Feb '23

16 Feb '23

CRTS J174033.4+414756 bright superoutburst continues YYYYMMDD(UT) mag observer 20230128.5155 19.929zr (ZTF Alert DC mag (Masci+ 2019)) 20230130.8567 <159c (Yutaka Maeda) 20230204.8568 123cG (Yutaka Maeda) 20230204.8568 123cG (Yutaka Maeda) 20230207.149 13.15CV (Klaus Wenzel) 20230207.160 131 (Klaus Wenzel) 20230209.137 132CV (Klaus Wenzel) 20230213.201 136CV (Klaus Wenzel) 20230214.8331 134cG (Yutaka Maeda)

1 0

[vsnet-newvar 9782] CRTS J164950.4+035835 superoutburst
by Taichi Kato 16 Feb '23

16 Feb '23

CRTS J164950.4+035835 superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230130.8296 <154c (Yutaka Maeda) 20230204.8293 <150c (Yutaka Maeda) 20230214.8059 137cG (Yutaka Maeda) 20230214.8059 137cG (Yutaka Maeda)

1 0

[vsnet-newvar 9781] CRTS J103317.3+072119 superhump period
by Taichi Kato 15 Feb '23

15 Feb '23

CRTS J103317.3+072119 superhump period Josch Hambsch has reported second-night observations. The superhump period is 0.07269(6) d (amplitude 0.23 mag).

1 0

[vsnet-newvar 9780] ASASSN-23af: oscillation-type rebrightening
by Taichi Kato 15 Feb '23

15 Feb '23

ASASSN-23af: oscillation-type rebrightening Josch Hambsch has reported further data. It has become apparent that this object is showing oscillation-type rebrightenings (as in WZ Sge).

1 0

[vsnet-newvar 9779] PNV J06245297+0208207 stopped fading
by Taichi Kato 14 Feb '23

14 Feb '23

PNV J06245297+0208207 stopped fading According to observations by Josch Hambsch, rapid fading stopped (currently at 17.0 mag). Let's see what happens next.

1 0

[vsnet-newvar 9778] CRTS J103317.3+072119 superhumps
by Taichi Kato 14 Feb '23

14 Feb '23

CRTS J103317.3+072119 superhumps Josch Hambsch detected two superhumps on Feb. 13.

1 0

[vsnet-newvar 9777] ASASSN-18jh: deeply eclipsing SU UMa star currently in superoutburst, but almost ending
by Taichi Kato 13 Feb '23

13 Feb '23

ASASSN-18jh: deeply eclipsing SU UMa star currently in superoutburst, but almost ending Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021) I obtained a period of 0.0783463(1) d. Eclipses were 1.3 mag deep in quiescence + orbital hump. ATLAS Intranight variations during the current long outburst suggest superhumps. A high inclination is suspected. YYYYMMDD(UT) mag observer 20230129.1119 18.114o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230129.1150 18.108o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230129.1204 18.087o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230129.1302 18.188o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.1257 17.909o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.1284 17.905o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.1343 17.980o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.1453 17.700o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.8592 16.147o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.8625 16.206o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.8689 16.159o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.8787 16.176o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230131.1667 16.12C (Eddy Muyllaert) 20230131.8574 15.498o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230131.8606 15.430o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230131.8660 15.537o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230131.8773 15.756o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230202.1097 15.587o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230202.1128 15.595o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230202.1189 15.658o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230202.1289 15.762o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230203.0826 15.454o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230203.0951 16.216o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230203.0987 16.498o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230203.1063 15.491o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230203.8551 15.566o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230203.8587 15.597o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230203.8642 15.560o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230203.8770 15.685o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230204.8578 15.678o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230204.8615 15.757o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230204.8683 15.784o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230204.8820 15.868o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230206.0995 15.970o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230206.1028 15.985o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230206.1086 16.099o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230206.1187 16.084o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230207.0951 17.311o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230207.0988 16.387o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230207.1052 16.114o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230207.1172 15.824o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230207.8592 16.112o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230207.8625 16.120o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230207.8699 16.268o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230208.8294 16.347o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230208.8326 16.436o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230208.8400 16.564o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230208.8500 16.517o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230210.8397 16.955o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230210.8433 17.073o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230210.8487 17.087o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230210.8599 16.957o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230211.1383 170C (Masao Funada) 20230212.0855 17.473c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230212.0894 17.460c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230212.0952 17.599c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

1 0