All names: EPIC 228755638, 1SWASP J124420.23-084016.8, TYC 5528-629-1, GSC 05528-00629, NSVS 15972828, PG 1241-084, [TFW97] J124420.24-084016.87, TIC 156618553, TD1 31073, Gaia DR3 3675067076961979264, HWVir, Gaia DR2 3675067076961979264, HIC 62157, Gaia EDR3 3675067076961979264, UCAC4 407-055365, uvby98 -000703477 V, HE 1241-0823, V* HW Vir, 2MASS J12442024-0840168, BD-07 3477, PPM 195791, HIP 62157
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 44 20.25 (0.05) | 12 44 20.21 | 12 44 20.24 (0.05) | ||
| Declination | -08 40 17.10 (0.03) | -08 40 15.93 | -08 40 16.85 (0.03) | ||
| Spectral type | sdB+dM | sdB2VIIHe3 | |||
| Effective temperature | [K] | 28500.0 (500) | |||
| log(g) | [cgs] | 5.63 (0.05) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 5.77 (0.06) | 5.80 (0.08) | 5.77 (0.06) | |
| Distance | [pc] | 173.23 (2) | 172.50 (3) | 173.23 (2) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 9.009 (0.09) | 8.969 (0.2) | 9.009 (0.09) | |
| Proper motion (declination) | [mas/yr] | -15.829 (0.06) | -15.677 (0.1) | -15.829 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 10.46 (0.04) | ||||
| V magnitude | 10.59 (0.06) | ||||
| R magnitude | 10.89 (0.05) | ||||
| I magnitude | |||||
| J magnitude | 10.97 (0.03) | 10.97 (0.03) | |||
| H magnitude | 11.09 (0.02) | 11.09 (0.02) | |||
| K magnitude | 11.12 (0.02) | 11.12 (0.02) | |||
| u magnitude | |||||
| g magnitude | 10.51 (0.01) | ||||
| r magnitude | 10.89 (0.05) | ||||
| i magnitude | 11.27 (0.05) | ||||
| z magnitude | 11.88 (0.003) | ||||
| G magnitude | 10.59 (0.005) | 10.61 (0.006) | 10.59 (0.005) | ||
| BP magnitude | 10.47 (0.01) | 10.46 (0.02) | |||
| RP magnitude | 10.83 (0.02) | 10.87 (0.03) | |||
| Pan g magnitude | 10.41 | ||||
| Pan r magnitude | 10.80 | ||||
| Pan i magnitude | 11.12 | ||||
| Pan z magnitude | 11.35 | ||||
| Pan y magnitude | 11.53 | ||||
| E(B-V) | 0.017 | ||||
* 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.