AT 2023gfj
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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   Binning factor: (rounded to nearest integer >1)
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Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
148902023-04-26 20:25:26Other / Other1200Andreoli.VAndreoli.VNone tns_2023gfj_2023-04-26.851_Other_Other.txt tns_2023gfj_2023-04-26.851_Other_Other.fitsObject
Light Curves
FilterTel / InstObs-date rangePhotometry
g-ZTFP48_ZTF-Cam2023-03-18 04:40:48 - 2023-04-19 06:28:482
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
3382152023-04-19 06:28:4813.95ABMagg-ZTFP48_ZTF-Cam30ZTF
3382142023-03-18 04:40:4813.64ABMagg-ZTFP48_ZTF-Cam30ZTF
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
1753372023-04-19 23:34:07ZTF_Bot1C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaborationZTFZTF08:11:59.239+08:44:24.232023-03-18 04:40:48.00013.64g-ZTFPSNZTF23aafzquwZTF
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
148162023-04-30 10:57:18AndreoliVittorioAndreoli.V ; Castellani.FNoneOther0We 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