All names: WD 1027+398, Gaia DR3 756150707815989632, WIRED J103008.34+393715.4, SDSS J103008.34+393715.5, Gaia DR2 756150707815989632, SDSS J103008.34+393715.4, SDSS J103008.35+393715.2, [HHD2009] SDSS J1030+3937, Gaia EDR3 756150707815989632, SDSS J103008.33+393715.4, PB 302, GALEX J103008.3+393716
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 10 30 08.36 (0.2) | 10 30 08.34 | 10 30 08.36 (0.3) | 10 30 08.34 (0.2) | 10 30 08.34 | 10 30 08.30 | 10 30 08.34 | |||||
| Declination | 39 37 15.04 (0.2) | 39 37 15.48 | 39 37 15.06 (0.4) | 39 37 15.54 (0.2) | 39 37 15.49 | 39 37 12.36 | 39 37 15.49 | |||||
| Spectral type | DA | DA+dM | DA+M | DA d | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 25180.0 (570) | 20622.0 (278) | 20913.0 (312) | ||||||||
| log(g) | [cgs] | 7.79 (0.08) | 7.49 (0.07) | 7.53 (0.07) | ||||||||
| Mass | [M☉] | 0.53 (0.04) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.0178 | ||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(C/H) | ||||||||||||
| log(N/H) | ||||||||||||
| log(O/H) | ||||||||||||
| log(Na/H) | ||||||||||||
| log(Mg/H) | ||||||||||||
| log(Al/H) | ||||||||||||
| log(Si/H) | ||||||||||||
| log(P/H) | ||||||||||||
| log(S/H) | ||||||||||||
| log(Sc/H) | ||||||||||||
| log(Ti/H) | ||||||||||||
| log(Cr/H) | ||||||||||||
| log(Mn/H) | ||||||||||||
| log(Fe/H) | ||||||||||||
| log(Ni/H) | ||||||||||||
| Parallax | [mas] | 1.50 (0.2) | 1.24 (0.4) | 1.50 (0.2) | ||||||||
| Distance | [pc] | 666.97 (93) | 804.41 (265) | 666.98 (93) | ||||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 13.96020131 (0.2) | 14.21501047 (0.5) | 13.96 (0.2) | 18.6 | |||||||
| Proper motion (declination) | [mas/yr] | -31.22775174 (0.2) | -33.13123615 (0.9) | -31.228 (0.2) | -31.0 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | 18.50 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 18.65 (0.02) | 18.65 (0.02) | 18.67 (0.02) | 18.67 | 18.66 (0.02) | |||||||
| g magnitude | 18.71 (0.008) | 18.71 (0.008) | 18.65 (0.02) | 18.65 | 18.67 (0.02) | |||||||
| r magnitude | 19.09 (0.01) | 19.09 (0.01) | 19.07 (0.02) | 19.07 | 19.07 (0.02) | |||||||
| i magnitude | 19.05 (0.01) | 19.05 (0.01) | 19.04 (0.02) | 19.04 | 19.04 (0.02) | |||||||
| z magnitude | 18.80 (0.03) | 18.80 (0.03) | 18.78 (0.03) | 18.78 | 18.80 (0.03) | |||||||
| G magnitude | 18.80 (0.02) | 18.84 | 18.80 (0.004) | |||||||||
| BP magnitude | 18.82 (0.02) | 18.70 | ||||||||||
| RP magnitude | 18.68 (0.04) | 18.52 | ||||||||||
| Pan g magnitude | 18.74 (0.02) | |||||||||||
| Pan r magnitude | 19.08 (0.01) | |||||||||||
| Pan i magnitude | 19.05 (0.008) | |||||||||||
| Pan z magnitude | 18.84 (0.02) | |||||||||||
| Pan y magnitude | 18.65 (0.01) | |||||||||||
| E(B-V) | 0.018 | |||||||||||
* 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.