All names: SDSS J002931.16+153940.2, GALEX J002931.2+153940, SDSS J002931.15+153940.2, SDSS J002931.15+153940.1, Gaia EDR3 2780770013085321472, Gaia DR3 2780770013085321472, Gaia DR2 2780770013085321472
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 29 31.16 (0.2) | 00 29 31.16 | 00 29 31.16 (0.3) | 00 29 31.16 (0.2) | 00 29 31.16 | |||
| Declination | 15 39 40.20 (0.2) | 15 39 40.21 | 15 39 40.20 (0.3) | 15 39 40.19 (0.2) | 15 39 40.22 | |||
| Spectral type | DAH | DAH | ||||||
| Effective temperature | [K] | 8883.0 (454) | ||||||
| log(g) | [cgs] | 5.05 (0.06) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.17 (0.3) | 0.16 (0.4) | 0.17 (0.3) | ||||
| Distance | [pc] | 5749.91 (9621) | 6353.10 (15165) | 5750.43 (9623) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 2.751512521 (0.3) | 1.654974725 (0.8) | 2.752 (0.3) | ||||
| Proper motion (declination) | [mas/yr] | 0.237976588 (0.3) | 0.278998561 (0.5) | 0.238 (0.3) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 20.46 (0.05) | 20.46 (0.05) | 20.55 (0.07) | |||||
| g magnitude | 19.39 (0.01) | 19.39 (0.01) | 19.38 (0.02) | |||||
| r magnitude | 19.51 (0.02) | 19.51 (0.01) | 19.57 (0.03) | |||||
| i magnitude | 19.67 (0.02) | 19.67 (0.02) | 19.67 (0.03) | |||||
| z magnitude | 19.74 (0.08) | 19.74 (0.08) | 19.77 (0.1) | |||||
| G magnitude | 19.47 (0.04) | 19.51 | 19.47 (0.004) | |||||
| BP magnitude | 19.55 (0.04) | 19.62 | ||||||
| RP magnitude | 19.45 (0.04) | 19.49 | ||||||
| Pan g magnitude | 19.40 (0.006) | |||||||
| Pan r magnitude | 19.54 (0.01) | |||||||
| Pan i magnitude | 19.71 (0.01) | |||||||
| Pan z magnitude | 19.80 (0.02) | |||||||
| Pan y magnitude | 19.51 (0.06) | |||||||
| E(B-V) | 0.048 | |||||||
* 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.