September 2021 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 8785] ASASSN-19ax possible superoutburst
by Taichi Kato 17 Sep '21

17 Sep '21

ASASSN-19ax possible superoutburst Suspected type from ZTF + ASAS-SN data. YYYYMMDD(UT) mag observer 20210906.9583 <142 (Eddy Muyllaert) 20210908.9069 <142 (Eddy Muyllaert) 20210909.9368 <142 (Eddy Muyllaert) 20210910.9194 128 (Eddy Muyllaert) 20210911.8451 127 (Eddy Muyllaert) 20210911.883 12.73C (Gary Poyner) 20210915.9076 128 (Eddy Muyllaert)

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[vsnet-newvar 8784] Re: Gaia18bzi, what is this?
by Taichi Kato 16 Sep '21

16 Sep '21

Re: Gaia18bzi, what is this? The light curve indeed looks like that of a SN. (Dwarf nova with a very long orbital period may not be excluded).

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[vsnet-newvar 8783] ZTFJ190328.06+270943.5: NL
by Taichi Kato 15 Sep '21

15 Sep '21

ZTFJ190328.06+270943.5: NL Type from ZTF data. 190328.0 +270943 (2000.0) Gaia_DR2_2036971188845710336 group_C4a g=15.667(0.136) Mowlavi2020 190328.0 +270943 (2000.0) ZTFJ190328.06+270943.5 susp g=15.988 r=15.982 amp=0.405 P=314.7886200 logfalse=-4.794 190328.0 +270943 (2000.0) ZTFJ190328.07+270943.5 g=15.988 (15.718-16.352) P=0.7472 190328.0 +270943 (2000.0) Gaia_DR2_2036971188845710336 group_C4a g=15.667(0.136) Mowlavi2020 190328.067 +270943.44 (2000.0) Gaia_DR2_2036971188845710464 plx=0.498(0.034) dismod=11.5 pmra=-1.896(0.047) pmdec=-8.118(0.056) G=15.667 BP=15.719 RP=15.458 190328.067 +270943.44 (2000.0) Gaia_EDR3_2036971188845710464 plx=0.538(0.026) dismod=11.3 pmra=-1.912(0.021) pmdec=-8.092(0.028) G=15.615 BP=15.700 RP=15.432

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[vsnet-newvar 8782] GSC4434.1625: R
by Taichi Kato 15 Sep '21

15 Sep '21

GSC4434.1625: R P=0.336693(5) d from ZTF data. GSC4434.1625 184244.87 +695620.0 (2000.0) 15.34 1 2MASS 184245.068 +695620.22 (2000.0) 15.798 16.000 15.936 184245.0 +695620 (2000.0) ZTFJ184245.04+695620.1 susp g=15.078 r=15.489 amp=0.139 P=0.3367500 logfalse=-4.860 184245.0 +695620 (2000.0) ZTFJ184245.05+695620.1 r=15.490 (15.320-15.586) P=0.3367 184245.049 +695620.01 (2000.0) Gaia_DR2_2259393595039224960 plx=0.595(0.051) dismod=11.1 pmra=-1.879(0.092) pmdec=-4.304(0.092) G=15.243 BP=15.051 RP=15.435 184245.049 +695620.00 (2000.0) Gaia_EDR3_2259393595039224960 plx=0.619(0.041) dismod=11.0 pmra=-1.952(0.047) pmdec=-4.334(0.061) G=15.237 BP=15.108 RP=15.453

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[vsnet-newvar 8781] WISEJ003429.0+733329: R
by Taichi Kato 15 Sep '21

15 Sep '21

WISEJ003429.0+733329: R P=0.291987(2) d from ZTF data. 2MASS 003429.011 +733330.17 (2000.0) 14.688 14.669 14.541 003429.0 +733329 (2000.0) PS1RRJ003429.02+733330.0 RR g=13.34(1.33) P=0.73557 0.25/0.03 003429.0 +733330 (2000.0) Gaia_DR2_537040928284437632 group_C2 g=14.616(0.088) Mowlavi2020 003429.0 +733330 (2000.0) ZTFJ003429.03+733330.0 susp g=14.591 r=14.776 amp=0.184 P=0.2920100 logfalse=-4.952 003429.0 +733330 (2000.0) ZTFJ003429.04+733330.1 r=14.756 (14.303-14.891) P=0.2919 003429.0 +733328 (2000.0) WISEJ003429.0+733329 EW W1=14.294 W2=14.310 amp=0.619 P=0.5839761 003429.0 +733330 (2000.0) Gaia_DR2_537040928284437632 group_C2 g=14.616(0.088) Mowlavi2020 003429.040 +733330.06 (2000.0) Gaia_DR2_537040928284437632 plx=1.251(0.031) dismod=9.5 pmra=5.739(0.057) pmdec=-1.896(0.041) G=14.616 BP=14.603 RP=14.534 003429.040 +733330.05 (2000.0) Gaia_EDR3_537040928284437632 plx=1.293(0.019) dismod=9.4 pmra=5.828(0.019) pmdec=-1.958(0.022) G=14.594 BP=14.612 RP=14.524

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[vsnet-newvar 8780] ATOJ004.2305+51.2304: R
by Taichi Kato 15 Sep '21

15 Sep '21

ATOJ004.2305+51.2304: R P=0.270970(3) d from ZTF data. 2MASS 001655.360 +511349.76 (2000.0) 16.427 16.578 17.238 001655.3 +511349 (2000.0) ATOJ004.2305+51.2304 NSINE c=16.326 o=16.613 P(LS)=0.270982 rms=0.08 001655.3 +511349 (2000.0) Gaia_DR2_394991241522199040 group_C2 g=16.358(0.060) Mowlavi2020 001655.3 +511349 (2000.0) PS1RRJ001655.34+511349.7 RR g=16.10(0.71) P=0.34024 0.02/0.09 001655.3 +511349 (2000.0) ZTFJ001655.32+511349.7 susp g=16.198 r=16.543 amp=0.133 P=0.2709500 logfalse=-3.320 001655.3 +511349 (2000.0) ZTFJ001655.32+511349.8 r=16.541 (16.427-16.664) P=0.2710 001655.3 +511349 (2000.0) Gaia_DR2_394991241522199040 group_C2 g=16.358(0.060) Mowlavi2020 001655.332 +511349.75 (2000.0) Gaia_DR2_394991241522199040 plx=0.492(0.083) dismod=11.5 pmra=-6.654(0.105) pmdec=-0.461(0.076) G=16.358 BP=16.218 RP=16.442 001655.331 +511349.75 (2000.0) Gaia_EDR3_394991241522199040 plx=0.468(0.046) dismod=11.6 pmra=-6.618(0.041) pmdec=-0.653(0.041) G=16.328 BP=16.251 RP=16.446

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[vsnet-newvar 8779] ASASSN-18vb: new SU UMa-type dwarf nova
by Taichi Kato 15 Sep '21

15 Sep '21

ASASSN-18vb: new SU UMa-type dwarf nova Tamas Tordai has reported observations. The object shows superhumps with a period of 0.0832(7) d and an amplitude of 0.21 mag.

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[vsnet-newvar 8778] MASTER OT J221811.12+654219.9 superoutburst
by Taichi Kato 15 Sep '21

15 Sep '21

MASTER OT J221811.12+654219.9 superoutburst YYYYMMDD(UT) mag observer 20210908.3480 19.897zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210908.5962 <163c (Yutaka Maeda) 20210909.6506 <166c (Yutaka Maeda) 20210910.1999 15.073zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210910.2206 15.005zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210912.2642 14.551zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8777] CRTS J212625.1+201948 superoutburst
by Taichi Kato 15 Sep '21

15 Sep '21

CRTS J212625.1+201948 superoutburst ER UMa-like object. Supercycle about 80 d. YYYYMMDD(UT) mag observer 20210908.1957 18.380zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210908.1971 18.441zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210910.1947 15.825zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210912.1973 15.875zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210914.2242 16.068zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8776] ATLAS18sxj outburst
by Taichi Kato 15 Sep '21

15 Sep '21

ATLAS18sxj outburst Past outburst in 2018 Aug. looked like a normal outburst of an SU UMa star (from ZTF data). The current one may be a superoutburst. YYYYMMDD(UT) mag observer 20210912.1982 16.378zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210914.2209 16.522zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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vsnet-newvar September 2021