All names: WISE J095245.82+182102.6, SDSS J095245.80+182102.6, LAMOST J095245.73+182102.9, SDSS J095245.73+182102.8, SDSS J095245.74+182102.9, USNO-B1.0 1083-00198558, Gaia DR2 626369685327491200, ** ZUC 7, WD 0950+185, GALEX J095245.7+182103, Gaia EDR3 626369685327491200, SDSS J095245.73+182102.9, [HHD2009] SDSS J0952+1821, WDS J09528+1821AB, WIRED J095245.73+182102.9, TIC 88097037, 2MASS J09524582+1821026, UCAC4 542-048645, PG 0950+186, WISEA J095245.82+182102.5, WDS J09258+1821AB
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Guo et al. 2015 | Gianninas et al. 2011 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 52 45.81 (0.07) | 09 52 45.81 | 09 52 45.81 (0.06) | 09 52 45.79 (49) | 09 52 45.60 | 09 52 45.74 | ||||||
| Declination | 18 21 02.57 (0.07) | 18 21 02.65 | 18 21 02.57 (0.06) | 18 21 02.72 (49) | 18 20 15.72 | 18 21 02.92 | ||||||
| Spectral type | DA+M | DA+M | DA | DA2+dM | DA4 | DA+M | ||||||
| Effective temperature | [K] | 31150.0 (103) | 29460.0 (483) | 33917.0 (205) | ||||||||
| log(g) | [cgs] | 7.72 (0.03) | 7.54 (0.06) | 7.32 (0.02) | ||||||||
| Mass | [M☉] | 0.51 (0.01) | 0.46 (0.02) | |||||||||
| log(Luminosity) | [L☉] | -0.64 (0.02) | ||||||||||
| Cooling age | [Gyr] | 0.0072 (0.0002) | ||||||||||
| 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] | 6.12 (0.09) | 6.04 (0.09) | |||||||||
| Distance | [pc] | 163.42 (2) | 165.62 (2) | 166.00 | ||||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -13.48209627 (0.09) | -13.67866426 (0.1) | -0.3 (3) | ||||||||
| Proper motion (declination) | [mas/yr] | -1.849760356 (0.08) | -1.822498495 (0.1) | -2.2 (3) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | yes | WDMS | ||||||||||
| B magnitude | 15.83 (0.4) | |||||||||||
| V magnitude | 15.42 (0.06) | |||||||||||
| R magnitude | 14.96 (0.1) | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 12.69 (0.02) | |||||||||||
| H magnitude | 12.01 (0.02) | |||||||||||
| K magnitude | 11.79 (0.02) | |||||||||||
| u magnitude | 15.59 (0.005) | 15.59 (0.005) | 15.46 | 15.42 (0.02) | ||||||||
| g magnitude | 15.45 (0.003) | 15.45 (0.003) | 15.77 | 15.73 (0.02) | ||||||||
| r magnitude | 15.22 (0.003) | 15.22 (0.003) | 16.47 | 16.43 (0.08) | ||||||||
| i magnitude | 14.54 (0.003) | 14.54 (0.003) | 16.68 | 16.65 (0.3) | ||||||||
| z magnitude | 14.15 (0.005) | 14.15 (0.005) | 16.60 | 16.59 (0.4) | ||||||||
| G magnitude | 15.35 (0.07) | 15.33 | ||||||||||
| BP magnitude | 15.90 (0.07) | 15.57 | ||||||||||
| RP magnitude | 14.13 (0.01) | 14.13 | ||||||||||
| Pan g magnitude | 15.60 (0.007) | |||||||||||
| Pan r magnitude | 15.55 (0.05) | |||||||||||
| Pan i magnitude | 14.58 (0.004) | |||||||||||
| Pan z magnitude | 14.12 (0.004) | |||||||||||
| Pan y magnitude | 13.86 (0.005) | |||||||||||
| E(B-V) | 0.011 | |||||||||||
* 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.