Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2018-07-13 10:33:36.000
TNS AT
Y
Public
Y
Host Name
LMC
Discovery Mag
13.3
Filter
V-Johnson
Reporter/s
K. Z. Stanek, for the ASAS-SN team
Light curves
▌ASASSN-3_Paczynski_g
▌Gaia_Gaia-photometric_G
▌ASASSN-2_Cassius_V
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
No Data
Light Curves
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20829 | 2018-07-25 05:50:38 | Gaia_Bot1 | A. Delgado,D. Harrison,S. Hodgkin et al. | GaiaAlerts | GaiaAlerts | 05:41:46.570 | -71:48:37.76 | 2018-06-18 08:25:26.000 | 10.71 | G-Gaia | PSN | Gaia18bvg | GaiaAlerts | candidate LMC nova, aka ASASSN-18pf | N | |||||
| 20663 | 2018-07-15 15:20:32 | Krzysztof Stanek | K. Z. Stanek,for the ASAS-SN team et al. | ASAS-SN | ASAS-SN | 05:41:46.462 | -71:48:37.58 | 2018-07-13 10:33:36.000 | 13.3 | V-Johnson | PNV | LMC | ASASSN-18pf | ASAS-SN | In several epochs, fading, most likely a Nova in the LMC, there was a seasonal gap in the coverage | 2018TNSTR.983....1S | N |
Classification Reports
No Data
Comments
Object coordinates updated
Object coordinates updated according to AT-report 20829 of Group GaiaAlerts
Previous RA, DEC: 05:41:46.462, -71:48:37.58 (85.44359, -71.81044)
Updated RA, DEC: 05:41:46.570, -71:48:37.76 (85.444042, -71.810489)
Improved astrometry from Gaia DR2 catalog, and photometry
Astrometry from a stack of 2x60s CCD images made by Róbert Fidrich, Hungary, on July 18.8118 UT:
The position is measured in Astrometrica as RA 05:41:46.567 (±0.12") Dec -71:48:37.70 (±0.10"). For the astrometric solution, 90 reference stars from Gaia DR2 (brightness 11-16 mag) are used, with an astrometric threshold of 0.3". Astrometrica gives dRa=0.11" and dDe=0.09" for the reference star ensemble (the uncertainties above are proper uncertainties for the target star).
Photometry V=14.04 ±0.04 mag using KOPR software. APASS V comparison stars, 7px aperture radius and ACF filter. 5 comparison stars between 12.2 and 13.7 mag, chosen to have B-V<0.8 mag and deviation <0.06 mag.
14.06V on July 18.8118 UT + astrometry
2x60s CCD V image made by Róbert Fidrich (HAA/VSS, Hungary) remotely with 0.43m T17 reflector of Itelescope facitilies at Siding Spring, Australia
Photometry: 14.06V on 2018 July 18.8118 UT
Precize astrometry made Pál Brlás (HAA/VSS, Hungary), based on my CCD images: 05 41 46.53 -71 48 37.6 (+-0.5")