All names: Gaia DR3 931348922106072704, 2MASS J08160792+4803495, PG 0812+482, PG0812+482, Gaia DR2 931348922106072704, UCAC4 691-047818, SDSS J081607.91+480349.7, TIC 461658287, LAMOST J081607.81+480350.7, SDSS J081607.90+480349.7, WISEA J081607.89+480349.8, LAMOST J081607.91+480349.7, GALEX J081607.8+480350, WISE J081607.90+480350.1, Gaia EDR3 931348922106072704
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | MWDD HE | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 16 07.90 (0.1) | 08 16 07.91 | 08 16 07.94 | 08 16 07.90 (0.07) | 08 16 07.91 (0.1) | 08 16 07.90 | ||||
| Declination | 48 03 49.67 (0.07) | 48 03 49.75 | 48 03 49.83 | 48 03 49.67 (0.04) | 48 03 49.74 (0.07) | 48 03 49.75 | ||||
| Spectral type | sdB | sdB | sdB | SDB | ||||||
| Effective temperature | [K] | 23030.0 (1968) | 21940.0 | 27111.0 (58) | ||||||
| log(g) | [cgs] | 5.23 (0.3) | 4.58 | 5.50 (0.02) | ||||||
| Mass | [M☉] | 0.255 | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 0.46 (0.1) | 0.46 (0.09) | 0.46 (0.09) | 0.46 (0.1) | |||||
| Distance | [pc] | 2175.86 (641) | 2195.39 (435) | 2195.45 (435) | 2175.81 (641) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -3.90804973 (0.1) | -4.023 (0.1) | -4.022517378 (0.1) | -3.908 (0.1) | 1.0 | ||||
| Proper motion (declination) | [mas/yr] | -4.548603184 (0.09) | -2.268 (0.07) | -2.268152115 (0.07) | -4.549 (0.1) | -3.0 | ||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 14.96 (0.06) | |||||||||
| V magnitude | 15.11 (0.04) | |||||||||
| R magnitude | 15.61 (0.07) | |||||||||
| I magnitude | ||||||||||
| J magnitude | 15.59 (0.07) | 15.59 (0.07) | ||||||||
| H magnitude | 15.56 (0.1) | 15.56 (0.1) | ||||||||
| K magnitude | 15.40 | |||||||||
| u magnitude | 14.93 (0.004) | 14.93 (0.004) | 14.93 (0.004) | 14.95 (0.02) | ||||||
| g magnitude | 14.94 (0.003) | 14.94 (0.003) | 14.94 (0.003) | 14.92 (0.01) | ||||||
| r magnitude | 15.35 (0.003) | 15.35 (0.003) | 15.35 (0.003) | 15.35 (0.01) | ||||||
| i magnitude | 15.66 (0.004) | 15.66 (0.004) | 15.66 (0.004) | 15.66 (0.01) | ||||||
| z magnitude | 15.91 (0.007) | 15.91 (0.007) | 15.91 (0.007) | 15.94 (0.02) | ||||||
| G magnitude | 15.16 (0.001) | 15.18 (0.0005) | 15.18 | 15.16 (0.003) | ||||||
| BP magnitude | 15.06 (0.001) | 15.03 (0.007) | 15.03 | |||||||
| RP magnitude | 15.35 (0.002) | 15.35 (0.004) | 15.35 | |||||||
| Pan g magnitude | 15.02 (0.004) | 15.02 (0.004) | ||||||||
| Pan r magnitude | 15.38 (0.005) | 15.38 (0.005) | ||||||||
| Pan i magnitude | 15.68 (0.002) | 15.68 (0.002) | ||||||||
| Pan z magnitude | 15.93 (0.004) | 15.93 (0.004) | ||||||||
| Pan y magnitude | 16.11 (0.008) | 16.11 (0.008) | ||||||||
| E(B-V) | 0.039 | |||||||||
* 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.