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

[vsnet-alert 27410] 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.

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[vsnet-alert 27409] SX LMi superhumps
by Taichi Kato 14 Feb '23

14 Feb '23

SX LMi superhumps Tamas Tordai has reported observations. Superhumps were already present on Feb. 12-13 (stage not yet identified).

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[vsnet-alert 27408] V1024 Per photometry
by Taichi Kato 14 Feb '23

14 Feb '23

V1024 Per photometry Magnus Larsson and Tamas Tordai have reported observations. There were no apparent superhumps on Feb. 11-13.

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[vsnet-alert 27407] CP Dra superoutburst
by Taichi Kato 13 Feb '23

13 Feb '23

CP Dra superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230204.6719 <158c (Yutaka Maeda) 20230207.7121 <144c (Yutaka Maeda) 20230207.7665 <167C (Masayuki Moriyama) 20230210.7616 143:cG (Yutaka Maeda) 20230211.7404 148C (Masayuki Moriyama)

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[vsnet-alert 27406] 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))

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[vsnet-alert 27405] Slowly rising outburst of SU UMa
by Taichi Kato 12 Feb '23

12 Feb '23

Slowly rising outburst of SU UMa Inside-out type? YYYYMMDD(UT) mag observer 20230204.7583 147:cG (Yutaka Maeda) 20230205.066 146 (Gary Poyner) 20230205.5827 147:cG (Yutaka Maeda) 20230205.7951 <134 (Jose Ripero) 20230206.8424 <141 (Eddy Muyllaert) 20230207.6402 145c (Yutaka Maeda) 20230207.7790 150C (Masayuki Moriyama) 20230207.8431 143 (Eddy Muyllaert) 20230208.015 143 (Gary Poyner) 20230208.8410 143 (Eddy Muyllaert) 20230209.8931 136 (Eddy Muyllaert) 20230210.053 133 (Gary Poyner) 20230210.6818 120cG (Yutaka Maeda) 20230211.7314 122C (Masayuki Moriyama) 20230211.8417 117 (Jose Ripero)

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[vsnet-alert 27404] PNV J06245297+0208207 fading rapidly
by Taichi Kato 12 Feb '23

12 Feb '23

PNV J06245297+0208207 fading rapidly Rapidly fading after a maximum on Feb. 10. Observers: Tamas Tordai, Crimean Astrophys. Obs. team, Josch Hambsch, Filipp Romanov

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[vsnet-alert 27403] ASASSN-23af rebrightening
by Taichi Kato 12 Feb '23

12 Feb '23

ASASSN-23af rebrightening Josch Hambsch has reported that this object brightened on Feb. 11 and is at 15.5. This behavior suggests a long rebrightening of a WZ Sge star.

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[vsnet-alert 27402] Unusual outburst (faint super?) of V1024 Per
by Taichi Kato 12 Feb '23

12 Feb '23

Unusual outburst (faint super?) of V1024 Per Following bright normal outburst (precursor or failed superoutburst), V1024 Per is now in outburst. Superoutburst should be now. Faint superoutburst or outburst still in development? YYYYMMDD(UT) mag observer 20221229.8736 <141 (Eddy Muyllaert) 20221231.6982 <142cG (Yutaka Maeda) 20230102.549 157C (Mitsutaka Hiraga) 20230102.5874 <157c (Yutaka Maeda) 20230102.6585 <141cG (Yutaka Maeda) 20230102.821 <147 (Gary Poyner) 20230102.8542 <141 (Eddy Muyllaert) 20230103.544 164C (Mitsutaka Hiraga) 20230103.5769 153:c (Yutaka Maeda) 20230104.5719 117cG (Yutaka Maeda) 20230104.6940 125C (Masayuki Moriyama) 20230104.867 121 (Gary Poyner) 20230105.937 13.01C (Gary Poyner) 20230106.853 13.69C (Gary Poyner) 20230106.8542 13.67C (Eddy Muyllaert) 20230107.6381 142c (Yutaka Maeda) 20230107.6381 142c (Yutaka Maeda) 20230107.901 14.58C (Gary Poyner) 20230108.5736 150:c (Yutaka Maeda) 20230108.5736 150:c (Yutaka Maeda) 20230108.592 151C (Mitsutaka Hiraga) 20230108.6374 150C (Masayuki Moriyama) 20230108.875 14.95C (Gary Poyner) 20230109.5945 <147c (Yutaka Maeda) 20230109.885 15.29C (Gary Poyner) 20230110.033 <147 (Gary Poyner) 20230110.565 159C (Mitsutaka Hiraga) 20230112.9382 <141 (Eddy Muyllaert) 20230113.012 <147 (Gary Poyner) 20230113.2401 15.611o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230113.2419 15.551o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230113.2451 15.577o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230113.2578 15.407o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.3033 15.843o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.3065 15.871o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.3120 15.672o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.3334 15.895o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.844 <147 (Gary Poyner) 20230115.3039 15.814o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.3070 15.952o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.3129 15.838o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.3229 15.838o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.9028 <141 (Eddy Muyllaert) 20230117.007 <155 (Gary Poyner) 20230117.817 <147 (Gary Poyner) 20230117.9271 <141 (Eddy Muyllaert) 20230119.3761 15.654o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.3793 15.679o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.3870 15.569o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.4029 15.626o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.817 <147 (Gary Poyner) 20230119.9243 <141 (Eddy Muyllaert) 20230120.858 <147 (Gary Poyner) 20230120.9653 <141 (Eddy Muyllaert) 20230121.5508 156:c (Yutaka Maeda) 20230121.6703 156C (Masayuki Moriyama) 20230121.8174 <141 (Eddy Muyllaert) 20230121.872 <155 (Gary Poyner) 20230123.2886 15.610o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230123.2918 15.705o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230123.2977 15.527o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230123.3078 15.662o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.530 164C (Mitsutaka Hiraga) 20230130.5697 <157c (Yutaka Maeda) 20230130.9389 <141 (Eddy Muyllaert) 20230204.980 <147 (Gary Poyner) 20230205.5155 <158c (Yutaka Maeda) 20230206.8153 <141 (Eddy Muyllaert) 20230207.8132 <141 (Eddy Muyllaert) 20230207.862 <147 (Gary Poyner) 20230208.8125 <141 (Eddy Muyllaert) 20230209.8771 132 (Eddy Muyllaert) 20230209.985 131 (Gary Poyner) 20230210.5697 132cG (Yutaka Maeda) 20230210.5697 132cG (Yutaka Maeda)

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[vsnet-alert 27401] Re: SX LMi likely superoutburst
by Taichi Kato 12 Feb '23

12 Feb '23

Re: SX LMi likely superoutburst The outburst is still young. Let's make time-resolved photometry. YYYYMMDD(UT) mag observer 20230207.7009 <140c (Yutaka Maeda) 20230208.8576 <142 (Eddy Muyllaert) 20230210.2668 14.165o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230210.2699 14.190o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230210.2805 13.940o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230210.7517 133cG (Yutaka Maeda)

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