All names: Gaia DR3 3928807456977316992, Ton 97, GSC 00881-00614, Gaia EDR3 3928807456977316992, 2MASS J12393942+1257379, PG1237+132, Gaia DR2 3928807456977316992, [BFA97] 145, GALEX J123939.4+125738, FAUST 3336, LAMOST J123939.46+125738.7, PG 1237+132, uvby98 610070097, TIC 87603487
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 39 39.40 (0.04) | 12 39 39.46 | 12 39 39.41 (0.04) | ||
| Declination | 12 57 37.55 (0.03) | 12 57 38.31 | 12 57 37.76 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 33100.0 (900) | |||
| log(g) | [cgs] | 5.93 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.93 (0.04) | 0.97 (0.08) | 0.93 (0.04) | |
| Distance | [pc] | 1071.24 (50) | 1030.93 (89) | 1071.24 (50) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -16.649 (0.05) | -16.526 (0.1) | -16.649 (0.05) | |
| Proper motion (declination) | [mas/yr] | -13.275 (0.05) | -13.129 (0.1) | -13.275 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.60 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.27 (0.05) | 15.27 (0.05) | |||
| H magnitude | 15.47 (0.1) | 15.47 (0.1) | |||
| K magnitude | 15.50 (0.2) | 15.50 (0.2) | |||
| u magnitude | 14.08 (0.004) | ||||
| g magnitude | 14.34 (0.003) | ||||
| r magnitude | 14.89 (0.01) | ||||
| i magnitude | 15.17 (0.004) | ||||
| z magnitude | 15.46 (0.006) | ||||
| G magnitude | 14.57 (0.003) | 14.59 (0.0007) | 14.57 (0.003) | ||
| BP magnitude | 14.43 (0.003) | 14.38 (0.006) | |||
| RP magnitude | 14.85 (0.004) | 14.85 (0.005) | |||
| Pan g magnitude | 14.39 (0.005) | ||||
| Pan r magnitude | 14.83 (0.004) | ||||
| Pan i magnitude | 15.19 (0.003) | ||||
| Pan z magnitude | 15.46 (0.006) | ||||
| Pan y magnitude | 15.65 (0.004) | ||||
| E(B-V) | 0.025 | ||||
* 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.