All names: Gaia DR2 741795587082716672, GALEX J102151.6+301012, LAMOST J102151.64+301011.9, Gaia DR3 741795587082716672, USNO-B1.0 1201-00181281, SDSSJ102151.64+301011.9, SDSS J102151.65+301011.8, Gaia EDR3 741795587082716672, SDSS J102151.64+301011.9
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 10 21 51.64 (0.1) | 10 21 51.64 | 10 21 51.65 (0.1) | ||
| Declination | 30 10 11.83 (0.1) | 30 10 11.90 | 30 10 11.98 (0.1) | ||
| Spectral type | sdB+WD | sdB+D | |||
| Effective temperature | [K] | 30700.0 (500) | |||
| log(g) | [cgs] | 5.71 (0.06) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.24 (0.1) | 0.12 (0.2) | 0.24 (0.1) | |
| Distance | [pc] | 4239.08 (2622) | 8278.15 (14446) | 4239.08 (2622) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.579 (0.1) | -1.126 (0.3) | -1.579 (0.1) | |
| Proper motion (declination) | [mas/yr] | -9.269 (0.1) | -9.027 (0.3) | -9.269 (0.1) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 17.90 | ||||
| V magnitude | |||||
| R magnitude | 18.80 | ||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 17.78 (0.01) | 17.78 (0.01) | |||
| g magnitude | 17.96 (0.006) | 17.96 (0.006) | |||
| r magnitude | 18.42 (0.008) | 18.42 (0.008) | |||
| i magnitude | 18.78 (0.01) | 18.78 (0.01) | |||
| z magnitude | 19.10 (0.04) | 19.10 (0.04) | |||
| G magnitude | 18.21 (0.003) | 18.24 (0.003) | 18.21 (0.003) | ||
| BP magnitude | 18.09 (0.01) | 18.03 (0.02) | |||
| RP magnitude | 18.53 (0.04) | 18.52 (0.03) | |||
| Pan g magnitude | 18.04 (0.02) | ||||
| Pan r magnitude | 18.46 (0.006) | ||||
| Pan i magnitude | 18.82 (0.008) | ||||
| Pan z magnitude | 19.07 (0.01) | ||||
| Pan y magnitude | 19.30 (0.03) | ||||
| E(B-V) | 0.021 | ||||
* 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.