RA/DEC (2000)
19:33:30.860 +30:29:57.90
293.378583 +30.499417
Type
CV
Redshift
Discovery ReportClassification Report
Reporting Group
GEOTS
Discovering Data Source
GEOTS
Discovery Date
2023-05-18 06:53:34.000
TNS AT
Y
Public
Y
Discovery Mag
16.1
Filter
Clear-
Reporter/s
Balaji Kumar
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2023ivk - 2023-05-21 16:30:21 Other / Other (None)z=
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   Binning factor: (rounded to nearest integer >1)
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Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
15047 2023-05-21 16:30:21 Other / Other 2100 Miho Kawabata, Anjasha Gangopadhyay, Avinash Singh Kenta Taguchi None tns_2023ivk_2023-05-21_16-30-21_Other_Other.dat tns_2023ivk_2023-05-21_16-30-21_Other_Other.fits Object We performed the follow-up spectroscopic observation using the KOOLS-IFU attached to the 3.8-m Seimei telescope at Okayama Observatory. The spectral resolution is ~ 500, and the wavelength coverage is 4100-8500 A.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- Other_Other 2022-03-29 10:20:12 - 2023-05-18 06:53:34 2459667.9306944 - 2460082.7871991 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
343490 2023-05-18 06:53:34 2460082.7871991 16.1 0.2 18 Other Clear- Other_Other 30 3 frames taken with a 0.36-m f/2 astrograph + CCD; zero points calibrated to UCAC-4 magnitudes.
343489 2022-03-29 10:20:12 2459667.9306944 17.5 Other Clear- Other_Other 30 B. Kumar [Last non detection] 3 frames taken with a 0.36-m f/2 astrograph + CCD; zero points calibrated to UCAC-4 magnitudes.
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
178012 2023-05-18 19:26:53 Balaji Kumar Balaji Kumar GEOTS GEOTS 19:33:30.860 +30:29:57.90 2023-05-18 06:53:34.000 16.1 Clear- 1 PSN GEOTS-Balaji-2023-004 GEOTS Hostless transient at galactic latitude 05.24 deg, galactic longitude 64.64 deg. 2023TNSTR1147....1K N
Related files
File Comments Last Modified (UT) Modified By
tns_2023ivk_atrep_178012_GEOTS.png Discovery and Reference Images 2023-05-18 19:26:54 Balaji Kumar
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
14972 2023-05-25 11:01:45 Kenta Taguchi Kenta Taguchi (Kyoto University), Miho Kawabata (University of Hyogo), Anjasha Gangopadhyay (Hiroshima University), Avinash Singh (Hiroshima University), Naoto Kojiguchi (Kyoto University) None CV 1 Our spectrum is dominated by a blue continuum with narrow emission lines and the potential Na I D line (e.g., H alpha, H beta, Helium I 6678, He II 4686, and N III 4640). Regardless of the slowly-rising light curves by ATLAS and ZTF, this object is likely a CV from our spectrum. 2023TNSCR1232....1T
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
15047 2023-05-21 16:30:21 Other / Other 2100 Miho Kawabata, Anjasha Gangopadhyay, Avinash Singh Kenta Taguchi None tns_2023ivk_2023-05-21_16-30-21_Other_Other.dat tns_2023ivk_2023-05-21_16-30-21_Other_Other.fits Object We performed the follow-up spectroscopic observation using the KOOLS-IFU attached to the 3.8-m Seimei telescope at Okayama Observatory. The spectral resolution is ~ 500, and the wavelength coverage is 4100-8500 A.

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