All names: 2MASS J01213807-5532207, Gaia DR3 4911021775553809664, JL 242, Gaia DR2 4911021775553809664, GEN# +6.00001598, GALEX J012137.8-553220, LB 1598, EC 01196-5548, GSC 08477-00708, EC01196-5548, TIC 206590489
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 01 21 38.04 | 01 21 38.10 (0.03) | ||
| Declination | -55 32 20.83 | -55 32 20.85 (0.03) | ||
| Spectral type | He-sdO | sdOHe | ||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.83 (0.05) | 0.88 (0.03) | |
| Distance | [pc] | 1202.21 (69) | 1136.88 (44) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 7.953 (0.07) | 7.795 (0.03) | |
| Proper motion (declination) | [mas/yr] | -6.231 (0.07) | -6.174 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 11.73 | |||
| V magnitude | 11.95 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.53 (0.03) | 14.53 (0.03) | ||
| H magnitude | 14.73 (0.07) | 14.73 (0.07) | ||
| K magnitude | 14.90 (0.1) | 14.90 (0.1) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 13.78 (0.0007) | 13.77 (0.003) | ||
| BP magnitude | 13.52 (0.009) | |||
| RP magnitude | 14.08 (0.002) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.010 | |||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.