All names: Gaia EDR3 3074691671876653696, SDSS J085131.42+003338.7, 2SLAQ J085131.43+003338.7, WIRED J085131.42+003338.7, WD 0848+007, [HHD2009] SDSS J0851+0033, SDSS J085131.43+003338.7, Gaia DR2 3074691671876653696, SDSS J085131.42+003338.6, [SGR2010] J0851+0033, Gaia DR3 3074691671876653696
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 51 31.41 (0.2) | 08 51 31.43 | 08 51 31.41 (0.4) | 08 51 31.42 | 08 51 31.43 (0.2) | 08 51 31.43 | 08 51 30.31 | 08 51 31.43 | ||||
| Declination | 00 33 38.40 (0.1) | 00 33 38.69 | 00 33 38.40 (0.2) | 00 33 38.70 | 00 33 38.68 (0.1) | 00 33 38.69 | 00 33 36.36 | 00 33 38.72 | ||||
| Spectral type | DA+M | DA+M | DA+M | DA6+M | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 8001.0 (296) | 6416.0 (81) | 6374.0 (55) | ||||||||
| log(g) | [cgs] | 7.74 (0.9) | 5.60 (0.4) | 6.32 (0.5) | ||||||||
| Mass | [M☉] | 0.45 (0.5) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 2.94 (0.4) | 2.47 (0.5) | 2.94 (0.4) | ||||||||
| Distance | [pc] | 339.95 (41) | 405.59 (81) | 825.00 (279) | 339.95 (41) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -12.41953081 (0.3) | -13.12138642 (0.6) | -12.42 (0.3) | -1.6 | |||||||
| Proper motion (declination) | [mas/yr] | -17.9215918 (0.2) | -16.99066196 (0.4) | -17.922 (0.2) | -16.8 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | yes | WDMS | WDMS | |||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 17.08 (0.02) | |||||||||||
| H magnitude | 16.49 (0.02) | |||||||||||
| K magnitude | 16.17 (0.03) | |||||||||||
| u magnitude | 20.18 (0.04) | 20.20 | 20.18 (0.04) | 20.20 (0.04) | 20.18 | 20.18 (0.04) | ||||||
| g magnitude | 19.71 (0.01) | 19.73 | 19.72 (0.01) | 19.73 (0.01) | 19.73 | 19.72 (0.01) | ||||||
| r magnitude | 19.56 (0.02) | 19.58 | 19.56 (0.02) | 19.58 (0.02) | 19.57 | 19.58 (0.02) | ||||||
| i magnitude | 19.26 (0.02) | 19.27 | 19.25 (0.02) | 19.27 (0.02) | 19.27 | 19.28 (0.02) | ||||||
| z magnitude | 18.65 (0.03) | 18.66 | 18.64 (0.03) | 18.66 (0.03) | 18.68 | 18.67 (0.03) | ||||||
| G magnitude | 19.39 (0.05) | 19.42 | 19.39 (0.004) | |||||||||
| BP magnitude | 19.66 (0.05) | 19.68 | ||||||||||
| RP magnitude | 18.79 (0.03) | 18.77 | ||||||||||
| Pan g magnitude | 19.69 (0.009) | |||||||||||
| Pan r magnitude | 19.57 (0.01) | |||||||||||
| Pan i magnitude | 19.29 (0.009) | |||||||||||
| Pan z magnitude | 18.87 (0.02) | |||||||||||
| Pan y magnitude | 18.44 (0.01) | |||||||||||
| E(B-V) | 0.024 | |||||||||||
* 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.