September 2022 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 9438] ATLAS18ebr likely superoutburst
by Taichi Kato 01 Oct '22

01 Oct '22

ATLAS18ebr likely superoutburst YYYYMMDD(UT) mag observer 20220921.4632 17.142zg (ZTF Alert DC mag (Masci+ 2019)) 20220922.4676 17.007zg (ZTF Alert DC mag (Masci+ 2019)) 20220922.4881 16.448zr (ZTF Alert DC mag (Masci+ 2019)) 20220924.4706 16.927zr (ZTF Alert DC mag (Masci+ 2019)) 20220924.4913 17.177zg (ZTF Alert DC mag (Masci+ 2019)) 20220925.4462 16.623zr (ZTF Alert DC mag (Masci+ 2019)) 20220925.4885 17.303zg (ZTF Alert DC mag (Masci+ 2019)) 20220926.4502 17.450zg (ZTF Alert DC mag (Masci+ 2019)) 20220926.4895 17.286zr (ZTF Alert DC mag (Masci+ 2019)) 20220927.4679 17.563zg (ZTF Alert DC mag (Masci+ 2019)) 20220927.4918 16.827zr (ZTF Alert DC mag (Masci+ 2019)) 20220928.4793 17.524zg (ZTF Alert DC mag (Masci+ 2019)) 20220928.4923 17.517zr (ZTF Alert DC mag (Masci+ 2019)) 20220929.4509 16.801zr (ZTF Alert DC mag (Masci+ 2019)) 20220929.4851 17.780zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9437] Gaia DR3 5360745975756861440 bright outburst
by Taichi Kato 01 Oct '22

01 Oct '22

Gaia DR3 5360745975756861440 bright outburst http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22ebj/ Gaia22ebj AT2022whk 2022-09-27 23:15:32 160.45304 -51.32771 13.43 19.85 0.24 unknown 2022-09-30 11:12:22 ~7 mag outburst in Gaia source, candidate CV 104148.7 -511939 (2000.0) Gaia_DR3_5360745975756861440 CV (score=0.46) 104148.746 -511939.79 (2000.0) Gaia_DR2_5360745975756861440 plx=2.688(0.469) dismod=7.9 pmra=-14.439(0.651) pmdec=9.871(0.673) G=19.801 BP=19.683 RP=19.540 104148.746 -511939.78 (2000.0) Gaia_EDR3_5360745975756861440 plx=2.664(0.326) dismod=7.9 pmra=-14.842(0.327) pmdec=9.786(0.271) G=19.755 BP=19.784 RP=19.602 Bright outburst in 2008 according to ASAS-3: YYYYMMDD(UT) mag observer 20080205.1988 13.079V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397)) 20080207.3008 13.313V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397)) 20080210.1938 13.670V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397)) The outburst amplitude suggests an SU UMa/WZ Sge star.

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[vsnet-newvar 9436] TCP J23580961+5502508
by Naoto Kojiguchi 01 Oct '22

01 Oct '22

TCP J23580961+5502508 Large outburst amplitude of 8.7 mag. Possible WZ Sge-type dwarf nova. TCP J23580961+5502508 2022 09 30.4363* 23 58 09.61 +55 02 50.8 12.0 U Cas 9 0 http://www.cbat.eps.harvard.edu/unconf/followups/J23580961+5502508.html 2022 09 30.436 Discovered by Tadashi Kojima, Tsumagoi,Gunma-ken, Japan, on three frames(5_s exp) under limiting mag.= 13.5 taken by Canon EOS 6D digital camera + 135mm f/3.5 lens. Nothing is visible at this location taken on 2022 Sep29.601 UT under limiting mag.= 14.2, Mag=13.5 taken by Canon EOS 6D digital camera +200mm f3.2lens. 2022 09 30.549 Mag.= 12.0, position end figures 09s.58, 50".3 observed by T. Noguchi, Katori, Japan, using 0.23-m f/10 Schmidt-Cassegrain + unfiltered CCD (KAF-0261E), An image at http://park8.wakwak.com/~ngc/images/TCPinCas_20220930.jpg. 2022 09 30.4435 Yuji Nakamura, Kameyama, Mie, Japan, found this TCP on two frames (6 sec exp. limiting mag 13.5) taken by 135mm/F4.0 lens and CMOS camera. Mag.= 12.2, position end figures 09s.54, 49".9. Nothing is visible at this location on the frames taken on 2022 Sep. 26.4587 UT (6 sec exp. limiting mag 13.5) by same instrument. --- Isao Endoh (NAOJ) IDs: 235809.604 +550250.329 Gaia_DR2_1993876650919517440 Plx=-1.3305(1.2667) dismod=-- pmRA=-6.965(2.818) pmDE=-26.213(1.222) G=20.6889(0.0112) BP-RP=0.5106 E(g-r)=-- E(B-V)=-- Ag=-- Ar=-- Ai=-- 235809.629 +550250.684 Gaia_EDR3_1993876650919517440 Plx=2.4918(0.8465) dismod=8.0 PM=26.721 pmRA=-13.58(1.081) pmDE=-23.013(0.697) G=20.611666(0.008471) BP-RP=0.426098 E(g-r)=0.110 E(B-V)=0.097 Ag=0.387 Ar=0.288 Ai=0.217 235809.572 +550248.802 PS1_DR1_174053595400396965 g=--(--) r=--(--) i=--(--) z=20.6374(0.0806) y=--(--) 235809.610 +550250.321 PS1_DR1_174053595401147507 g=20.7349(0.0215) r=20.7017(0.0399) i=20.7022(0.0305) z=20.6861(0.0456) y=--(--) ASAS-SN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/2cea05a1-2534-4aae-9a9e-6cc26… MPChecker: NO DATA YYYYMMDD(UT) mag code 20220926.4587 <13.5C (Yuji Nakamura) 20220927.609 20.539cy ATF 20220928.343 <17.329g ASN 20220928.344 <17.398g ASN 20220928.346 <17.327g ASN 20220929.430 19.115o ATF 20220929.434 19.325o ATF 20220929.439 19.241o ATF 20220929.601 <14.2C (Tadashi Kojima) 20220930.436 12.0C (Tadashi Kojima) 20220930.4435 12.2C (Yuji Nakamura) 20220930.549 12.0C (Toshihide Noguchi)

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[vsnet-newvar 9435] MASTER OT J001204.00-412337.4: sixth rebrightening
by Taichi Kato 30 Sep '22

30 Sep '22

MASTER OT J001204.00-412337.4: sixth rebrightening Josch Hambsch detected another rebrightening on Sep. 29 (15.9 mag).

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[vsnet-newvar 9434] ASASSN-19abr outburst
by Taichi Kato 29 Sep '22

29 Sep '22

ASASSN-19abr outburst YYYYMMDD(UT) mag observer 20220914.5495 <154c (Yutaka Maeda) 20220915.5800 <158c (Yutaka Maeda) 20220919.5428 <154c (Yutaka Maeda) 20220920.5683 <160c (Yutaka Maeda) 20220927.512 153C (Mitsutaka Hiraga)

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[vsnet-newvar 9433] MASTER OT J053628.39+135341.7: likely superoutburst
by Taichi Kato 29 Sep '22

29 Sep '22

MASTER OT J053628.39+135341.7: likely superoutburst Type from ZTF data. The 2020 Jan. superoutburst had a precursor. YYYYMMDD(UT) mag observer 20220919.4041 16.617zg (ZTF Alert DC mag (Masci+ 2019)) 20220919.4874 16.572zg (ZTF Alert DC mag (Masci+ 2019)) 20220921.4699 16.499zg (ZTF Alert DC mag (Masci+ 2019)) 20220924.4648 16.752zr (ZTF Alert DC mag (Masci+ 2019)) 20220924.5015 16.864zg (ZTF Alert DC mag (Masci+ 2019)) 20220926.4459 17.232zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9432] ASASSN-16cz likely superoutburst
by Taichi Kato 28 Sep '22

28 Sep '22

ASASSN-16cz likely superoutburst Type from ZTF data. The 2020 Oct. superoutburst was followed by a rebrightening.

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[vsnet-newvar 9431] ZTF J010643.88+531722.0 = ZTF18acrufyo: orbital period
by Taichi Kato 28 Sep '22

28 Sep '22

ZTF J010643.88+531722.0 = ZTF18acrufyo: orbital period From ZTF data. Porb=0.1393790(8) d. The light curve looks like to me a polar (also low luminosity).

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[vsnet-newvar 9430] ZTF J045300.50+224654.0 = ZTF17aacwcof: orbital period
by Taichi Kato 28 Sep '22

28 Sep '22

ZTF J045300.50+224654.0 = ZTF17aacwcof: orbital period From ZTF data. Porb=0.1985406(3) d. Eclipses 1.4 mag. The profile suggests NL+E rather than an eclipsing dwarf nova in quiescence.

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[vsnet-newvar 9429] ZTF J212926.04+372210.5 = ZTF18abvbruc: eclipsing polar
by Taichi Kato 28 Sep '22

28 Sep '22

ZTF J212926.04+372210.5 = ZTF18abvbruc: eclipsing polar From ZTF data. Porb=0.0659181(1) d. Eclipses more than 2 mag deep and pre-eclipse dips. Single hump per period.

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vsnet-newvar September 2022