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[vsnet-chat 9291] V890 Cen: dwarf nova
by Taichi Kato 08 Jan '23

08 Jan '23

V890 Cen: dwarf nova ATLAS data. Non-detection on the previous night. YYYYMMDD(UT) mag observer 20220327.9635 16.518c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220327.9648 16.467c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220327.9676 16.455c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220327.9933 16.426c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220330.2146 16.562o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220330.2180 16.529o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220330.2207 16.528o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220330.2273 16.464o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220403.2516 16.409o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220403.2548 16.458o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220403.2622 16.513o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220403.2973 16.621o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.1352 17.487o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.1668 17.344o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.1709 17.281o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.1873 17.324o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.2619 17.207o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.2972 17.214o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.3256 17.440o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.3506 17.416o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-chat 9290] V827 Cep: likely SU UMa with a fainter counterpart
by Taichi Kato 07 Jan '23

07 Jan '23

V827 Cep: likely SU UMa with a fainter counterpart I found a likely superoutburst in the ATLAS data. The amplitude looks too small and the true counterpart is likely a fainter one near the USNO object. 20180611.5803 19.220c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180613.5623 18.838o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180613.5716 18.555o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180613.5819 18.780o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180613.5928 18.679o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180615.5517 16.381c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180615.5615 16.407c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180615.5715 16.408c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180615.5821 16.381c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180617.5371 16.434o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180617.5477 16.470o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180617.5589 16.442o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180617.5701 16.476o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180619.5601 16.599o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180619.5698 16.468o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180621.5233 16.791o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180621.5348 16.727o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180621.5454 16.600o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180621.5572 16.681o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180623.5324 16.919o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180623.5422 16.889o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180623.5527 16.983o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180623.5637 16.939o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180625.5490 17.118o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180625.5600 17.011o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180625.5703 17.020o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180625.5809 17.133o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180627.2902 17.282o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180627.5884 17.325o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180627.5994 17.425o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180627.6110 17.284o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180627.6224 17.561o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180629.4774 18.266o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180629.4880 18.518o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180701.5259 18.639o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180701.5291 18.814o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180701.5380 18.757o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20180701.5473 18.675o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-chat 9289] DI Phe: dwarf nova (most likely SU UMa)
by Taichi Kato 07 Jan '23

07 Jan '23

DI Phe: dwarf nova (most likely SU UMa) ATLAS detected several outbursts. This one is most likely a superoutburst. YYYYMMDD(UT) mag observer 20220706.0753 19.437o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220706.0781 19.565o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220706.0832 19.244o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220714.0196 16.337o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220714.0207 16.439o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220714.0225 16.616o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220717.9998 16.785o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220718.0095 16.760o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220718.0128 16.800o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220718.0381 16.716o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220720.3231 17.241o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220720.3396 17.031o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220720.3427 17.061o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220720.3454 17.148o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220722.0533 19.138o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220722.0567 18.863o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220722.0595 19.187o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220724.3076 19.152o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220724.3255 19.453o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220724.3291 18.995o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-chat 9288] Re: ASAS-SN light curve of V374 Ori
by Taichi Kato 07 Jan '23

07 Jan '23

> Indeed, Brian further checked and sent this note: I see that a batch of LAMOST CV: you recently registered to VSX were (probably) mostly junks. Most of a few real CVs among them had already been discovered by other surveys. For LAMOST CV: with flat light curves (usually bright ones with no other hint of CV activity), I created a category em (instead of only giving CST) representing emission-line objects.

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[vsnet-chat 9280] ASAS-SN light curve of V374 Ori
by Taichi Kato 06 Jan '23

06 Jan '23

ASAS-SN light curve of V374 Ori See https://www.aavso.org/vsx/index.php?view=detail.top&oid=23437 https://www.aavso.org/orion-sword-variables-spectral-types I'm not aware of a CV with M1 secondary and (claimed) WD visible. Too faint in SDSS u and it does not look like that the continuum is from a WD. https://asas-sn.osu.edu/sky-patrol/coordinate/bed7352f-7f44-42cd-a242-99b32…

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[vsnet-chat 9286] V453 Lyr: most likely SU UMa star
by Taichi Kato 04 Jan '23

04 Jan '23

V453 Lyr: most likely SU UMa star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object showed a rebrightening after the 2021 outburst. This object is worth visiting for the next outburst.

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[vsnet-chat 9285] V1114 Cyg position and type
by Taichi Kato 04 Jan '23

04 Jan '23

V1114 Cyg position and type According to M. Hiraga-san (2020 July), the outbursting object was identified with 192436.705 +282602.72 (2000.0) Gaia_DR2_2026051423495985024 plx=0.537(0.377) dismod=11.3 pmra=-6.229(0.916) pmdec=-3.546(0.735) G=19.341 BP=19.568 RP=18.371 192436.704 +282602.72 (2000.0) Gaia_EDR3_2026051423495985024 plx=0.910(0.114) dismod=10.2 pmra=-4.515(0.094) pmdec=-2.729(0.126) G=19.220 BP=19.785 RP=18.349 ATLAS data appear to suppprt the SS Cyg-type classification.

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[vsnet-chat 9284] VSOLJ Variable Star Bulletin No.104
by meineko 03 Jan '23

03 Jan '23

VSOLJ Variable Star Bulletin no.104 is now available at http://vsolj.cetus-net.org/bulletin.html No.104 2023 Jan. Very low state in PY Per in 2022 Taichi Kato Seiichiro Kiyota VSOLJ

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[vsnet-chat 9283] V598 Sco: Z Cam star
by Taichi Kato 03 Jan '23

03 Jan '23

V598 Sco: Z Cam star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object is a Z Cam star. Standstill in 2022 Apr.-May (rising like IW And, but the termination was not recorded).

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[vsnet-chat 9282] AS Pav: most likely SU UMa star
by Taichi Kato 03 Jan '23

03 Jan '23

AS Pav: most likely SU UMa star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object is most likely an SU UMa star. Unmistakable superoutburst occurred in 2022 June-July. This outburst was also detected by Rod Stubbings. Let's try next time.

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