RA/DEC (2000)
08:11:59.239 +08:44:24.23
122.9968304 +8.7400646
Type
---
Redshift
0
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2023-03-18 04:40:48.000
TNS AT
Y
Public
Y
Discovery Mag
13.64
Filter
g-ZTF
Reporter/s
C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration

Spectra

 AT_2023gfj - 2023-04-26 20:25:26 Other / Other (None)z=
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Light curves

 P48_ZTF-Cam_g
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
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
14890 2023-04-26 20:25:26 Other / Other 1200 Andreoli.V Andreoli.V None tns_2023gfj_2023-04-26.851_Other_Other.txt tns_2023gfj_2023-04-26.851_Other_Other.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-ZTF P48_ZTF-Cam 2023-03-18 04:40:48 - 2023-04-19 06:28:48 2460021.695 - 2460053.77 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
338215 2023-04-19 06:28:48 2460053.77 13.95 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
338214 2023-03-18 04:40:48 2460021.695 13.64 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
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
175337 2023-04-19 23:34:07 ZTF_Bot1 C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration ZTF ZTF 08:11:59.239 +08:44:24.23 2023-03-18 04:40:48.000 13.64 g-ZTF PSN ZTF23aafzquw ZTF 2023TNSTR.850....1F N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
14816 2023-04-30 10:57:18 Vittorio Andreoli Andreoli.V ; Castellani.F None Other 0 1 We obtained, From Monte Baldo Observatory (OMB) located in Novezzina (Italy), low resolution spectra by 0.25-m telescope + Alpy600 spectrograph (dispersion 4.9 Ang/pix) on 2023-04-26.851 (4x300s), on 2023-04-27.828 (3x300s) and V (Jhonson) photometry with 0.4m telescope + Moravian G4 CCD full frame on 2023-04-27.828 . Photometry reduction give V mag 12.8. The spectra show red continuum and TiO molecular bands ( 4760, 4954 ,4956 ,5448 ,5450 ,5847 ,6149 ,6357 ,6714 ,7087 Ang) typically feature of M-type stars. V mag and spectral features are correspondent with the near star ROSS 619 that have a very high proper motion (1069 , -5094) mas/yr in module 5204 mas/yr. If we assume that ROSS 619 is 2023gfj then the distance from the coordinates reported on SIMBAD (Wenger.M et al, 2000) by the coordinates presented on the TNS N°175337 is 2.4’ (144 arcsec) , this distance has been travelled in 27.67 years. This time scale is consistent with our hypothesis. We propose that the transient 2023gfj is ROSS 619 in the new position. 2023TNSCR.973....1V
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
14890 2023-04-26 20:25:26 Other / Other 1200 Andreoli.V Andreoli.V None tns_2023gfj_2023-04-26.851_Other_Other.txt tns_2023gfj_2023-04-26.851_Other_Other.fits Object

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