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

[vsnet-alert 27297] MGAB-V233 superoutburst continues
by Taichi Kato 10 Jan '23

10 Jan '23

MGAB-V233 superoutburst continues (ER UMa star) Observations of superhumps are desired. YYYYMMDD(UT) mag observer 20221220.5642 <146C (Masayuki Moriyama) 20221225.5481 156C (Masayuki Moriyama) 20230102.5135 152C (Masayuki Moriyama) 20230108.4873 15.40C (Masayuki Moriyama)

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[vsnet-alert 27296] PNVJ06245297+0208207 rapid fading
by Taichi Kato 10 Jan '23

10 Jan '23

PNVJ06245297+0208207 rapid fading According to observations by Josch Hambsch, this object was rapidly fading on Jan. 9. The behavior is typical for an AM CVn-type outburst. Superhumps will soon appear.

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[vsnet-alert 27295] CS Ind faded
by Taichi Kato 09 Jan '23

09 Jan '23

CS Ind faded Normal outburst or precursor? YYYYMMDD(UT) mag observer 20221231.482 125 (Rod Stubbings) 20230103.085 11.76C (Gary Poyner) 20230103.0866 11.81C (Masao Funada) 20230104.4336 11.899V (Filipp Romanov) 20230104.4345 11.903V (Filipp Romanov) 20230104.4354 11.888V (Filipp Romanov) 20230104.4363 11.901V (Filipp Romanov) 20230104.4372 11.894V (Filipp Romanov) 20230104.4381 11.894V (Filipp Romanov) 20230104.4390 11.897V (Filipp Romanov) 20230104.4399 11.906V (Filipp Romanov) 20230104.4408 11.901V (Filipp Romanov) 20230104.4417 11.911V (Filipp Romanov) 20230104.4426 11.910V (Filipp Romanov) 20230104.4435 11.897V (Filipp Romanov) 20230104.4444 11.906V (Filipp Romanov) 20230104.4453 11.907V (Filipp Romanov) 20230104.4462 11.900V (Filipp Romanov) 20230104.4471 11.902V (Filipp Romanov) 20230104.4480 11.898V (Filipp Romanov) 20230104.4519 11.905V (Filipp Romanov) 20230104.4528 11.909V (Filipp Romanov) 20230104.4537 11.897V (Filipp Romanov) 20230104.4546 11.892V (Filipp Romanov) 20230104.4555 11.904V (Filipp Romanov) 20230104.4564 11.895V (Filipp Romanov) 20230104.4573 11.887V (Filipp Romanov) 20230104.4582 11.888V (Filipp Romanov) 20230104.4591 11.888V (Filipp Romanov) 20230104.4600 11.899V (Filipp Romanov) 20230104.4609 11.897V (Filipp Romanov) 20230104.4618 11.902V (Filipp Romanov) 20230104.4627 11.909V (Filipp Romanov) 20230104.4636 11.898V (Filipp Romanov) 20230104.4645 11.906V (Filipp Romanov) 20230104.4654 11.898V (Filipp Romanov) 20230104.4663 11.898V (Filipp Romanov) 20230104.4672 11.898V (Filipp Romanov) 20230104.4681 11.889V (Filipp Romanov) 20230104.4690 11.878V (Filipp Romanov) 20230104.4699 11.888V (Filipp Romanov) 20230105.478 118 (Rod Stubbings) 20230106.501 118 (Rod Stubbings) 20230107.4329 12.347V (Filipp Romanov) 20230107.4338 12.352V (Filipp Romanov) 20230107.4347 12.344V (Filipp Romanov) 20230107.4356 12.348V (Filipp Romanov) 20230107.4365 12.356V (Filipp Romanov) 20230107.4374 12.344V (Filipp Romanov) 20230107.4383 12.343V (Filipp Romanov) 20230107.4392 12.362V (Filipp Romanov) 20230107.4401 12.340V (Filipp Romanov) 20230107.4410 12.352V (Filipp Romanov) 20230107.4419 12.351V (Filipp Romanov) 20230107.4428 12.340V (Filipp Romanov) 20230107.4437 12.353V (Filipp Romanov) 20230107.4446 12.356V (Filipp Romanov) 20230107.4455 12.352V (Filipp Romanov) 20230107.4464 12.360V (Filipp Romanov) 20230107.4473 12.345V (Filipp Romanov) 20230107.4482 12.362V (Filipp Romanov) 20230107.4521 12.346V (Filipp Romanov) 20230107.4530 12.363V (Filipp Romanov) 20230107.4539 12.364V (Filipp Romanov) 20230107.4548 12.370V (Filipp Romanov) 20230107.4557 12.377V (Filipp Romanov) 20230107.4566 12.363V (Filipp Romanov) 20230107.4575 12.367V (Filipp Romanov) 20230107.4584 12.360V (Filipp Romanov) 20230107.4593 12.354V (Filipp Romanov) 20230107.4602 12.363V (Filipp Romanov) 20230107.4611 12.352V (Filipp Romanov) 20230107.4620 12.360V (Filipp Romanov) 20230107.4629 12.347V (Filipp Romanov) 20230107.4638 12.351V (Filipp Romanov) 20230107.4647 12.338V (Filipp Romanov) 20230107.4656 12.356V (Filipp Romanov) 20230107.4665 12.348V (Filipp Romanov) 20230107.4674 12.355V (Filipp Romanov) 20230107.4683 12.357V (Filipp Romanov) 20230107.4692 12.364V (Filipp Romanov) 20230107.4701 12.378V (Filipp Romanov) 20230107.4710 12.366V (Filipp Romanov) 20230107.481 122 (Rod Stubbings) 20230108.460 130 (Rod Stubbings)

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[vsnet-alert 27294] 4C +31.03
by meineko 08 Jan '23

08 Jan '23

4C +31.03 is blazer, recently reported gamma-ray-flare by Ciprini et al. (ATel #15841). In my CCD images, it is also bright in optical wavelength. 2459948.9066 11.70 Ic 2459948.9061 12.12 Rc 2459948.9057 12.45 V with 0.25mSCT + QSI 632ws CCD at Kamagaya, Japan https://meineko.com/ccd/4C30.03-outburst.jpg Seiichiro Kiyota VSOLJ

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[vsnet-alert 27293] GI Mon: currently dwarf nova
by Taichi Kato 08 Jan '23

08 Jan '23

GI Mon: currently dwarf nova Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object is currently a dwarf nova with 1 mag amplitude (see also vsnet-chat 8458). The light curve since 2019 resembles an IW And star (heartbeat state). The current cycle length is about 70 d.

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[vsnet-alert 27292] Z Cam: oscillations before the termination of standstill
by Taichi Kato 08 Jan '23

08 Jan '23

Z Cam: oscillations before the termination of standstill It would be worth noting that there were low-amplitude oscillations since 2022 Oct., but without gradual brightening seen in IW And stars. The disk apparently started becoming thermally unstable before the termination of the standstill. Oscillations were also seen for a month after entering this standstill (2022 Apr.).

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[vsnet-alert 27291] V1024 Per faded (precursor?)
by Taichi Kato 08 Jan '23

08 Jan '23

V1024 Per faded (precursor?) YYYYMMDD(UT) mag observer 20230102.549 157C (Mitsutaka Hiraga) 20230102.5874 <157c (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)

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[vsnet-alert 27290] MASTER OT J021216.01+461154.5: no superhumps
by Taichi Kato 08 Jan '23

08 Jan '23

MASTER OT J021216.01+461154.5: no superhumps Tonny Vanmunster and Tamas Tordai reported observations on two nights. No superhumps were detected (at least as of now).

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[vsnet-alert 27289] Highly variable high state of CM Phe
by Taichi Kato 07 Jan '23

07 Jan '23

Highly variable high state of CM Phe Recent ATLAS observations are given. The object was in relatively low state with dwarf nova outbursts in 2018-2021. High state similar to the current one was seen before 2018 in the ASAS-SN data. YYYYMMDD(UT) mag observer 20221126.8209 15.029c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221126.8241 15.109c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221126.8305 15.171c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221126.8424 15.286c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221129.0762 14.923o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221129.0803 14.834o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221129.0866 14.856o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221129.0974 14.736o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.8079 14.811o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.8110 14.811o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.8169 14.807o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.8205 14.831o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.8236 14.762o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.8268 14.751o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.8308 14.790o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.8408 14.812o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221203.0656 15.065o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221203.0683 15.088o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221203.0733 15.110o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221203.0828 15.119o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221204.8105 15.188o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221204.8237 15.167o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221204.8270 15.138o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221204.8325 15.158o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221204.8381 15.025o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221204.8409 15.139o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221204.8470 15.123o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221204.8571 15.049o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221207.0875 15.335o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221207.0929 15.269o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221207.0965 15.157o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221207.1189 15.242o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.7862 15.077o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.7929 15.069o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.7961 15.104o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.8088 14.927o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.8106 15.131o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.8161 15.261o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.8192 15.230o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.8307 15.208o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221211.0518 14.947o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221211.0609 14.939o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221211.0641 15.003o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221211.0740 15.082o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221215.0557 15.896c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221215.0612 15.746c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221215.0644 15.700c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221215.0746 15.775c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221219.0450 16.108c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221219.0480 16.086c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221219.0534 15.943c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221219.0699 15.909c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221220.7908 15.474o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221220.7941 15.435o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221220.7995 15.515o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221220.8097 15.538o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221223.0477 15.727c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221223.0513 15.661c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221223.0577 15.555c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221223.0685 15.643c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221227.0372 15.796c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221227.0403 16.042c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221227.0458 16.055c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221227.0650 16.055c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221231.0355 15.393o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221231.0386 15.482o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221231.0625 15.333o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27288] CS Ind: observations on Jan. 4
by Taichi Kato 07 Jan '23

07 Jan '23

CS Ind: observations on Jan. 4 Observations by Filipp Romanov obtained a rather flat light curve (but only for 1 hr and it would be difficult to exclude the presence of superhumps).

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