All names: Gaia DR2 3842290902781580544, [HHD2009] SDSS J0920-0012, 2SLAQ J092017.96-001246.5, SDSS J092017.95-001246.4, WIRED J092017.95-001246.4, Gaia EDR3 3842290902781580544, SDSS J092017.96-001246.4, Gaia DR3 3842290902781580544, WD 0917-000
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 20 17.95 (0.6) | 09 20 17.95 (0.8) | 09 20 17.96 (0.6) | 09 20 17.96 | 09 20 16.66 | 09 20 17.96 | |||
| Declination | -00 12 46.51 (0.6) | -00 12 46.51 (0.9) | -00 12 46.49 (0.6) | -00 12 46.48 | -00 12 45.00 | -00 12 46.41 | |||
| Spectral type | DA+dMe | DA+M | DA+M | DA+M | |||||
| Effective temperature | [K] | 8028.0 (137) | 7966.0 (126) | ||||||
| log(g) | [cgs] | 8.77 (0.2) | 8.88 (0.2) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 1.45 (0.8) | 1.11 (1) | 1.45 (0.8) | |||||
| Distance | [pc] | 691.66 (359) | 904.57 (809) | 691.66 (359) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -6.874634114 (0.8) | -4.33 (1) | -6.875 (0.8) | 0.6 | ||||
| Proper motion (declination) | [mas/yr] | -1.096811638 (0.6) | -6.385 (2) | -1.097 (0.6) | -3.6 | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | yes | WDMS | ||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 17.73 (0.03) | ||||||||
| H magnitude | 17.11 (0.03) | ||||||||
| K magnitude | 16.87 (0.05) | ||||||||
| u magnitude | 19.95 (0.04) | 19.94 (0.04) | 19.94 | 19.96 (0.03) | |||||
| g magnitude | 20.01 (0.02) | 20.02 (0.02) | 20.02 | 20.03 (0.02) | |||||
| r magnitude | 20.15 (0.02) | 20.15 (0.02) | 20.15 | 20.15 (0.02) | |||||
| i magnitude | 19.61 (0.02) | 19.62 (0.02) | 19.62 | 19.64 (0.02) | |||||
| z magnitude | 19.13 (0.05) | 19.10 (0.05) | 19.12 | 19.13 (0.05) | |||||
| G magnitude | 19.97 (0.04) | 19.90 | 19.97 (0.005) | ||||||
| BP magnitude | 20.12 (0.04) | 20.06 | |||||||
| RP magnitude | 19.25 (0.04) | 19.16 | |||||||
| Pan g magnitude | 20.07 (0.01) | ||||||||
| Pan r magnitude | 20.16 (0.01) | ||||||||
| Pan i magnitude | 19.66 (0.01) | ||||||||
| Pan z magnitude | 19.17 (0.02) | ||||||||
| Pan y magnitude | 18.88 (0.03) | ||||||||
| 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.