All names: Gaia DR3 2714054808608187520, Gaia DR2 2714054808608187520, SDSS J230821.01+084951.5, SDSS J230821.02+084951.54, SDSS J230821.02+084951.5, Gaia EDR3 2714054808608187520
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 08 21.02 (0.2) | 23 08 21.02 | 23 08 21.02 (0.2) | 23 08 21.02 (0.2) | ||||
| Declination | 08 49 51.55 (0.1) | 08 49 51.54 | 08 49 51.55 (0.2) | 08 49 51.58 (0.1) | ||||
| Spectral type | sdA | sdA | ||||||
| Effective temperature | [K] | 6929.0 (27) | ||||||
| log(g) | [cgs] | 5.53 (0.07) | ||||||
| Mass | [M☉] | 0.14486 (0.0002) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.05 (0.2) | 0.08 (0.2) | 0.05 (0.2) | ||||
| Distance | [pc] | 18813.03 (54820) | 12139.28 (34514) | 18796.99 (54730) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 0.150856708 (0.2) | 0.034907236 (0.4) | 0.151 (0.2) | ||||
| Proper motion (declination) | [mas/yr] | -1.829300529 (0.1) | -1.874475151 (0.3) | -1.829 (0.1) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 18.96 (0.03) | 18.96 (0.03) | 18.96 (0.03) | |||||
| g magnitude | 18.08 (0.007) | 18.10 (0.03) | 18.08 (0.007) | |||||
| r magnitude | 17.82 (0.007) | 17.81 (0.02) | 17.82 (0.007) | |||||
| i magnitude | 17.73 (0.008) | 17.72 (0.01) | 17.73 (0.008) | |||||
| z magnitude | 17.70 (0.02) | 17.68 (0.02) | 17.70 (0.02) | |||||
| G magnitude | 17.79 (0.02) | 17.81 | 17.79 (0.003) | |||||
| BP magnitude | 18.05 (0.02) | 18.05 | ||||||
| RP magnitude | 17.39 (0.02) | 17.38 | ||||||
| Pan g magnitude | 18.04 (0.004) | |||||||
| Pan r magnitude | 17.82 (0.004) | |||||||
| Pan i magnitude | 17.73 (0.004) | |||||||
| Pan z magnitude | 17.71 (0.006) | |||||||
| Pan y magnitude | 17.70 (0.01) | |||||||
| E(B-V) | 0.049 | |||||||
* 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.