All names: [BGK2006] J120028.38+195621.9, Gaia DR2 3999225919696945024, GALEX J120028.4+195621, Gaia DR3 3999225919696945024, SDSSJ120028.38+195621.9, SDSS J120028.38+195621.9
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 12 00 28.38 | 12 00 28.38 (0.2) | |
| Declination | 19 56 21.91 | 19 56 21.89 (0.2) | |
| Spectral type | sdB | sdB | |
| 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] | -0.16 (0.4) | 0.23 (0.3) |
| Distance | [pc] | 4315.93 (5076) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -2.337 (0.5) | -1.675 (0.3) |
| Proper motion (declination) | [mas/yr] | -0.598 (0.5) | -1.108 (0.2) |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | |||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | |||
| H magnitude | |||
| K magnitude | |||
| u magnitude | 19.46 (0.03) | 19.46 (0.03) | |
| g magnitude | 18.78 (0.009) | 18.78 (0.009) | |
| r magnitude | 19.05 (0.01) | 19.05 (0.01) | |
| i magnitude | 19.28 (0.02) | 19.29 (0.02) | |
| z magnitude | 19.43 (0.06) | 19.43 (0.06) | |
| G magnitude | 18.97 (0.003) | 18.93 (0.004) | |
| BP magnitude | 18.94 (0.03) | ||
| RP magnitude | 19.00 (0.04) | ||
| Pan g magnitude | 18.82 (0.01) | ||
| Pan r magnitude | 19.07 (0.006) | ||
| Pan i magnitude | 19.33 (0.01) | ||
| Pan z magnitude | 19.45 (0.01) | ||
| Pan y magnitude | 19.49 (0.04) | ||
| E(B-V) | |||
* 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.