All names: 2MASS J03120821+4006542, FBS 0308+399, FBS B 33, TIC 177826776, Gaia DR2 238920135801040384, UCAC2 45773806, SDSS J031208.21+400654.2, UCAC4 651-013258, SDSSJ031208.21+400654.2, Gaia DR3 238920135801040384
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 03 12 08.21 | 03 12 08.22 (0.03) | ||
| Declination | 40 06 54.20 | 40 06 54.22 (0.03) | ||
| Spectral type | sdB+MS | sdOA | ||
| 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] | 0.03 (0.05) | 0.03 (0.04) | |
| Distance | [pc] | 36764.71 (68123) | 39525.69 (62179) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.15 (0.09) | -0.229 (0.04) | |
| Proper motion (declination) | [mas/yr] | -0.296 (0.07) | -0.331 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.51 (0.06) | |||
| V magnitude | 15.34 (0.02) | |||
| R magnitude | 15.56 (0.06) | |||
| I magnitude | ||||
| J magnitude | 14.95 (0.04) | 14.95 (0.04) | ||
| H magnitude | 14.95 (0.07) | 14.95 (0.07) | ||
| K magnitude | 14.68 (0.09) | 14.68 (0.09) | ||
| u magnitude | 15.97 (0.005) | 15.97 (0.005) | ||
| g magnitude | 15.36 (0.004) | 15.36 (0.004) | ||
| r magnitude | 15.34 (0.004) | 15.34 (0.004) | ||
| i magnitude | 15.40 (0.004) | 15.40 (0.004) | ||
| z magnitude | 15.52 (0.006) | 15.52 (0.006) | ||
| G magnitude | 15.30 (0.0006) | 15.28 (0.003) | ||
| BP magnitude | 15.38 (0.003) | |||
| RP magnitude | 15.07 (0.003) | |||
| Pan g magnitude | 15.38 (0.001) | |||
| Pan r magnitude | 15.36 (0.004) | |||
| Pan i magnitude | 15.43 (0.003) | |||
| Pan z magnitude | 15.52 (0.003) | |||
| Pan y magnitude | 15.58 (0.004) | |||
| E(B-V) | 0.151 | |||
* 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.