All names: SDSS J102030.89+630936.1, SDSS J102030.90+630936.1, Gaia EDR3 1052134500664467840, Gaia DR3 1052134500664467840, GALEX J102030.8+630933, SDSS J102030.90+630936.10
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|
| Right ascension | 10 20 30.90 (6) | 10 20 30.89 | 10 20 30.90 (6) | ||
| Declination | 63 09 35.82 (7) | 63 09 35.84 | 63 09 35.82 (7) | ||
| Spectral type | DA | DA | |||
| Effective temperature | [K] | 11457.0 (348) | |||
| log(g) | [cgs] | 7.88 (0.2) | |||
| Mass | [M☉] | 0.488 (0.07) | |||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | ||||
| Distance | [pc] | ||||
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | ||||
| Proper motion (declination) | [mas/yr] | ||||
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 21.73 (0.2) | 21.71 (0.1) | 21.71 (0.1) | ||
| g magnitude | 21.01 (0.04) | 21.02 (0.05) | 21.02 (0.05) | ||
| r magnitude | 21.19 (0.07) | 21.20 (0.08) | 21.20 (0.08) | ||
| i magnitude | 21.51 (0.2) | 21.50 (0.2) | 21.50 (0.2) | ||
| z magnitude | 21.73 (0.6) | 21.71 (0.7) | |||
| G magnitude | 21.16 (1) | 21.16 (0.03) | |||
| BP magnitude | 19.62 (1) | ||||
| RP magnitude | 20.64 (1) | ||||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| 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.