All names: GALEX J081513.7+204348, [SGR2010] J0815+2043, Gaia DR3 675774178739247488, WIRED J081513.68+204348.2, EPIC 212028565, Gaia EDR3 675774178739247488, SDSS J081513.68+204348.1, WD 0812+208, Gaia DR2 675774178739247488, [HHD2009] SDSS J0815+2043, TIC 82328172, 2MASS J08151368+2043483, SDSS J081513.68+204348.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 15 13.68 (0.1) | 08 15 13.68 | 08 15 13.68 (0.2) | 08 15 13.68 | 08 15 13.69 (0.1) | 08 15 12.91 | 08 15 13.68 | |||
| Declination | 20 43 48.03 (0.09) | 20 43 48.19 | 20 43 48.04 (0.1) | 20 43 48.22 | 20 43 48.30 (0.09) | 20 43 41.88 | 20 43 48.22 | |||
| Spectral type | DA+M | DA+M3 | DA dM | DA+M | ||||||
| Effective temperature | [K] | 19416.0 (964) | 6300.0 (2) | |||||||
| log(g) | [cgs] | 7.92 (0.2) | 5.04 (0.05) | |||||||
| Mass | [M☉] | 0.58 (0.1) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 2.16 (0.2) | 2.35 (0.2) | 2.16 (0.2) | ||||||
| Distance | [pc] | 463.77 (34) | 425.39 (43) | 377.00 (58) | 463.78 (34) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -2.667234332 (0.1) | -2.38949428 (0.4) | -2.667 (0.1) | ||||||
| Proper motion (declination) | [mas/yr] | -16.87219748 (0.1) | -16.8454123 (0.2) | -16.872 (0.1) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.53 (0.04) | |||||||||
| H magnitude | 14.90 (0.06) | |||||||||
| K magnitude | 14.66 (0.07) | |||||||||
| u magnitude | 19.09 (0.02) | 19.16 | 19.08 (0.02) | 19.15 | 19.14 (0.03) | |||||
| g magnitude | 18.85 (0.009) | 18.87 | 18.87 (0.009) | 18.87 | 18.87 (0.02) | |||||
| r magnitude | 18.45 (0.008) | 18.48 | 18.45 (0.008) | 18.48 | 18.47 (0.01) | |||||
| i magnitude | 17.52 (0.006) | 17.52 | 17.54 (0.006) | 17.52 | 17.53 (0.02) | |||||
| z magnitude | 16.89 (0.01) | 16.87 | 16.89 (0.01) | 16.87 | 16.87 (0.02) | |||||
| G magnitude | 18.03 (0.03) | 18.04 | 18.03 (0.003) | |||||||
| BP magnitude | 18.77 (0.03) | 18.75 | ||||||||
| RP magnitude | 17.09 (0.01) | 17.08 | ||||||||
| Pan g magnitude | 18.81 (0.01) | |||||||||
| Pan r magnitude | 18.49 (0.006) | |||||||||
| Pan i magnitude | 17.54 (0.003) | |||||||||
| Pan z magnitude | 17.00 (0.007) | |||||||||
| Pan y magnitude | 16.70 (0.02) | |||||||||
| E(B-V) | 0.029 | |||||||||
* 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.