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

[vsnet-alert 27619] ASASSN-VJ065749.18+213318.6 brightening in standstill
by Taichi Kato 12 Apr '23

12 Apr '23

ASASSN-VJ065749.18+213318.6 brightening in standstill YYYYMMDD(UT) mag observer 20230306.1141 16.066o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.1259 16.232o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.1318 16.269o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.1350 16.115o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.2927 16.292o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.2954 16.252o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.3010 16.296o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.3114 16.182o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.8034 16.314o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.8065 16.147o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.8246 16.265o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.8300 16.164o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.0784 16.028o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.0812 16.073o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.0862 16.072o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.0971 16.103o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.2573 16.120zg (ZTF Alert DC mag (Masci+ 2019)) 20230311.3038 15.965o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230311.3066 16.019o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230311.3127 16.023o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230311.3227 15.957o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.7977 16.048c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.8013 15.990c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.8077 16.165c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.8178 16.118c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.8270 16.160c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230314.0255 16.319o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230314.0407 16.246o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230314.0439 16.354o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230314.0493 16.395o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230314.1932 15.540zg (ZTF Alert DC mag (Masci+ 2019)) 20230314.6422 172:C (Masayuki Moriyama) 20230315.3023 16.569o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230315.3055 16.557o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230315.3119 16.515o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230315.3229 16.553o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.0258 15.732o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.0290 15.790o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.0418 15.755o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.0507 15.853o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.3082 15.925o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.3114 15.910o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.3168 15.912o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.3274 15.912o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230319.5669 160C (Masayuki Moriyama) 20230320.7959 16.274c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.7977 15.883c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.7991 15.895c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.8009 16.005c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.8045 15.983c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.8096 15.903c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.8191 15.985c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230322.0458 16.142o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230322.0484 16.130o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230322.0537 16.151o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230322.0637 16.066o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.0307 16.192o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.0349 16.216o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.0409 16.143o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.0538 16.191o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2585 16.202o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2617 16.223o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2669 16.177o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2798 16.186o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.5920 162C (Masayuki Moriyama) 20230327.2416 15.969o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.2449 16.058o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.2505 16.115o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.2638 16.077o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.2820 16.166o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.2858 16.204o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.2938 16.239o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.3046 16.277o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.2927 16.365o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.3044 16.301o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.5543 158C (Masayuki Moriyama) 20230404.0036 16.028o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0173 15.924o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0206 15.669o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0261 15.857o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0378 15.904o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.9865 16.152o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.9961 16.117o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.9998 16.085o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0238 16.036o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.2903 15.819o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.3023 16.006o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.2386 15.926o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.2423 15.982o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.2477 15.983o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.2596 16.018o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0247 16.064o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0279 16.106o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0338 15.950o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0533 16.044o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.5762 159C (Masayuki Moriyama) 20230409.2626 16.038o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2658 16.107o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2712 16.105o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.5772 159C (Masayuki Moriyama) 20230410.0318 16.012o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.0374 16.102o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.0443 16.101o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.0485 16.007o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.5427 160C (Masayuki Moriyama) 20230411.2785 15.903c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230411.2878 15.822c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230411.2987 15.906c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27618] BH Lyn getting very faint
by Taichi Kato 12 Apr '23

12 Apr '23

BH Lyn getting very faint YYYYMMDD(UT) mag observer 20230107.3225 16.367zr (ZTF Alert DC mag (Masci+ 2019)) 20230107.4738 17.205zg (ZTF Alert DC mag (Masci+ 2019)) 20230115.4270 17.160o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.4288 17.152o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.4324 17.061o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.4563 17.811o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.4835 17.417o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.4871 17.481o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.4930 17.680o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.5085 17.659o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230123.4634 16.953o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230123.4666 16.701o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230123.5182 17.475o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230123.5237 17.446o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230125.2797 17.226zg (ZTF Alert DC mag (Masci+ 2019)) 20230125.3205 16.810zr (ZTF Alert DC mag (Masci+ 2019)) 20230127.2998 17.323zr (ZTF Alert DC mag (Masci+ 2019)) 20230202.4453 16.765zg (ZTF Alert DC mag (Masci+ 2019)) 20230205.2606 17.453zg (ZTF Alert DC mag (Masci+ 2019)) 20230205.3478 17.042zr (ZTF Alert DC mag (Masci+ 2019)) 20230208.1138 17.064zg (ZTF Alert DC mag (Masci+ 2019)) 20230208.1748 16.854zr (ZTF Alert DC mag (Masci+ 2019)) 20230210.2270 16.770zr (ZTF Alert DC mag (Masci+ 2019)) 20230210.2642 17.239zg (ZTF Alert DC mag (Masci+ 2019)) 20230211.8002 172:C (Masayuki Moriyama) 20230217.2289 15.517zr (ZTF Alert DC mag (Masci+ 2019)) 20230217.2594 15.634zg (ZTF Alert DC mag (Masci+ 2019)) 20230219.2439 17.181zr (ZTF Alert DC mag (Masci+ 2019)) 20230219.3257 15.824zg (ZTF Alert DC mag (Masci+ 2019)) 20230310.2409 17.282zr (ZTF Alert DC mag (Masci+ 2019)) 20230310.3046 15.330zg (ZTF Alert DC mag (Masci+ 2019)) 20230312.3433 19.238o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3466 18.942o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3521 19.070o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3620 18.978o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230314.2011 16.941zg (ZTF Alert DC mag (Masci+ 2019)) 20230316.3833 19.003o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.3864 19.018o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.3935 18.743o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.4033 18.910o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.1738 17.405zr (ZTF Alert DC mag (Masci+ 2019)) 20230328.3239 19.053o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.5961 <169C (Masayuki Moriyama) 20230410.3305 19.228o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.3342 19.087o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.3413 18.945o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.3565 18.860o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27617] Re: ASASSN-15dq: early superhumps or growing ordinary superhumps?
by Taichi Kato 12 Apr '23

12 Apr '23

Re: ASASSN-15dq: early superhumps or growing ordinary superhumps? According to Itoh-san's observation on Apr. 11, superhumps had grown. The profile was that of growing ordinary superhumps, not early superhumps.

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[vsnet-alert 27616] TCP J17233734+1902555: ordinary superhumps
by Taichi Kato 12 Apr '23

12 Apr '23

TCP J17233734+1902555: ordinary superhumps Most recent data from Josch Hambsch and Itoh-san detected superhumps. The period since Apr. 10 is 0.0560(1) d. This value does not support vsnet-alert 27589. This early claim of possible early superhumps was apparently affected by data with relatively low quality (weather problem etc.). A new analysis using the data up to Apr. 4 yielded a period of 0.05451(5) d (amplitude 0.05 mag), which still needs to be confirmed due to the limited quality of the data.

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[vsnet-alert 27615] ESO-HA 1830 = Gaia23bjz: unusual large-amplitude emission-line object
by Taichi Kato 12 Apr '23

12 Apr '23

ESO-HA 1830 = Gaia23bjz: unusual large-amplitude emission-line object http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bjz/ Amplitude 0.8 mag. Not irregular and several candidate periods are present in ATLAS data (such as 0.4644 d). 2MASS 054545.493 -075401.77 (2000.0) 13.555 12.452 11.616 054545.4 -075401 (2000.0) ATOJ086.4395-07.9005 dubious c=18.328 o=16.766 P(LS)=1.205589 rms=0.48 054545.495 -075401.81 (2000.0) Gaia_DR2_3012764080328211712 plx=2.140(0.186) dismod=8.3 pmra=1.277(0.327) pmdec=-3.659(0.309) G=18.029 BP=19.273 RP=16.694 054545.495 -075401.82 (2000.0) Gaia_EDR3_3012764080328211712 plx=2.279(0.128) dismod=8.2 pmra=1.364(0.107) pmdec=-2.873(0.105) G=18.142 BP=19.137 RP=16.707 The object is in M42 region and the distance is the same. Proper motions are different. (But apparently not a CV)

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[vsnet-alert 27614] ASASSN-18jq: possible SU UMa star
by Taichi Kato 11 Apr '23

11 Apr '23

ASASSN-18jq: possible SU UMa star Rebrightening. YYYYMMDD(UT) mag observer 20230305.3804 17.835o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230305.3845 18.451o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230305.3912 17.997o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230305.4026 17.577o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.3318 15.431o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.3436 15.424o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.3568 15.403o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.3596 15.378o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230313.3807 14.971o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230313.3875 14.995o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230313.3916 14.960o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230313.4060 14.884o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230317.3789 15.126o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230317.3915 15.173o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230317.3938 15.179o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230317.3997 15.195o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.0724 15.319c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.0756 15.298c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.0920 15.373c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.1076 15.362c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230321.3725 15.658o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230321.3766 15.672o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230321.3951 15.666o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230321.4112 15.591o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230325.2600 17.475o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230325.2627 17.455o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230325.2816 177C (Masao Funada) 20230325.2876 17.617o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230325.2927 17.508o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.0578 16.709c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.0934 16.645c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.0977 16.710c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.1029 16.801c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.3160 17.509o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.3369 17.402o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.3397 17.477o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.3452 17.590o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.2657 18.428o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.2676 18.585o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.2703 18.512o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.2754 18.566o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.1131 18.998o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.1159 18.997o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.1214 18.803o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.0792 18.314o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.0829 18.618o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.1145 18.240o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.3122 173C (Masao Funada)

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[vsnet-alert 27613] CRTS J090516.0+120451 superhump period
by Taichi Kato 11 Apr '23

11 Apr '23

CRTS J090516.0+120451 superhump period Itoh-san also detected superhumps before Vanmunster's observations (would better be credited). The combined data yielded a period of 0.0623(2) d.

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[vsnet-alert 27612] ASASSN-15dq: early superhumps or growing ordinary superhumps?
by Taichi Kato 11 Apr '23

11 Apr '23

ASASSN-15dq: early superhumps or growing ordinary superhumps? Itoh-san has reported observations Apr. 10. The profile of superhumps somewhat resembled that of early superhumps. This also may be a signature of growing superhumps. The outbursts have been rare (first since 2015) and the outburst amplitude is large for this period (0.08 d) and there may be a possibility of a long-Porb WZ Sge star. Further observations are encouraged.

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[vsnet-alert 27611] CRTS J090516.0+120451 (aka CSS 091022:090516+120451): new SU UMa-type dwarf nova
by tonny.vanmunster＠gmail.com 11 Apr '23

11 Apr '23

Dear colleagues, I have just finished analysing my unfiltered CCD observations of CRTS J090516.0+120451 obtained on 2023, Apr 10/11 at CBA Extremadura Observatory (Spain) using a 0.40-m f/5.1 telescope and SX-46 CCD camera under relatively clear skies. My observations were triggered by vsnet-alert 27609. The resulting light curve clearly shows the presence of regular superhumps with an amplitude of 0.39 mag, establishing CRTS J090516.0+120451 as a new SU UMa-type dwarf nova. A period analysis, using the ANOVA, Generalized-Lomb-Scargle, PDM and Conditional Entropy methods (Peranso 3.0) yields a combined superhump period of 0.0645 +/- 0.0024d. The object was at mag CV = 15.7 on Apr 11th. I will send my observations to AAVSO, CBA and VSNET for further analysis. Best regards Tonny --- Tonny Vanmunster CBA Belgium Observatory CBA Extremadura Observatory <http://www.cbabelgium.com> http://www.cbabelgium.com PERANSO: The Light Curve and Period Analysis Software http://www.peranso.com

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[vsnet-alert 27610] Wils_SDSSJ080306.99+284855.8 superoutburst
by Taichi Kato 10 Apr '23

10 Apr '23

Wils_SDSSJ080306.99+284855.8 superoutburst YYYYMMDD(UT) mag observer 20230331.5855 <154c (Yutaka Maeda) 20230402.4976 <152c (Yutaka Maeda) 20230404.0488 16.210o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0492 15.992o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0534 16.006o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0543 15.902o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0640 16.088o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0644 15.656o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.0700 15.621o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.3325 16.121o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.3485 16.226o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.3517 16.303o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.3038 16.421o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.3067 16.424o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.3122 16.411o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.3223 16.374o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.5323 159:c (Yutaka Maeda) 20230408.5323 159:c (Yutaka Maeda) 20230409.2698 16.492o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2730 16.473o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2787 16.471o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2893 16.431o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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