All names: SDSS J103104.98+803639.6, Gaia DR2 1133844535484817152, 2MASS J10310496+8036397, GALEX J103104.8+803639, TIC 367630980, SDSSJ103104.98+803639.6, Gaia DR3 1133844535484817152, SDSS J103104.98+803639.5
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 10 31 04.98 | 10 31 05.00 (0.03) | ||
| Declination | 80 36 39.62 | 80 36 39.59 (0.03) | ||
| Spectral type | sd | 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] | 0.46 (0.05) | 0.46 (0.03) | |
| Distance | [pc] | 2164.03 (243) | 2172.97 (154) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.93 (0.1) | -4.172 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.56 (0.08) | -3.76 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.03 (0.04) | 15.03 (0.04) | ||
| H magnitude | 14.71 (0.07) | 14.71 (0.07) | ||
| K magnitude | 14.65 (0.09) | 14.65 (0.09) | ||
| u magnitude | 15.42 (0.005) | 15.35 (0.005) | ||
| g magnitude | 15.35 (0.003) | 15.35 (0.003) | ||
| r magnitude | 15.48 (0.004) | 15.48 (0.004) | ||
| i magnitude | 15.57 (0.004) | 15.56 (0.004) | ||
| z magnitude | 15.66 (0.006) | 15.66 (0.006) | ||
| G magnitude | 15.39 (0.0007) | 15.37 (0.003) | ||
| BP magnitude | 15.38 (0.009) | |||
| RP magnitude | 15.27 (0.003) | |||
| Pan g magnitude | 15.44 (0.001) | |||
| Pan r magnitude | 15.52 (0.005) | |||
| Pan i magnitude | 15.61 (0.002) | |||
| Pan z magnitude | 15.71 (0.008) | |||
| Pan y magnitude | 15.75 (0.004) | |||
| E(B-V) | 0.035 | |||
* 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.