All names: SDSS J092544.40+414803.2, Gaia DR3 814365106862433152, Gaia EDR3 814365106862433152, USNO-B1.0 1318-00220229, WD 0922+420, SDSS J092544.41+414803.2, GALEX J092544.4+414803, SDSS J092544.40+414803.1, Gaia DR2 814365106862433152, SDSS J092544.41+414803.20
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | Gaia DR2 | Stilism | Eisenstein et al. 2006 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 25 44.41 (0.3) | 09 25 44.40 | 09 25 44.41 (0.4) | 09 25 44.41 | 09 25 44.41 (0.3) | 09 25 44.45 | 09 25 44.41 | ||||||
| Declination | 41 48 03.19 (0.2) | 41 48 03.22 | 41 48 03.19 (0.4) | 41 48 03.17 | 41 48 03.22 (0.2) | 41 48 00.72 | 41 48 03.17 | ||||||
| Spectral type | DB | DB | DB | DB | DB | ||||||||
| Effective temperature | [K] | 40907.0 (1795) | 40356.0 | 42877.0 | 38700.0 (1100) | 39592.0 (1524) | |||||||
| log(g) | [cgs] | 7.47 (0.3) | 7.50 | 7.52 | 7.59 (0.1) | 7.53 (0.2) | |||||||
| Mass | [M☉] | 0.42 (0.1) | 0.428 | 0.443 | 0.445 (0.06) | ||||||||
| log(Luminosity) | [L☉] | -0.01 (0.2) | |||||||||||
| Cooling age | [Gyr] | 0.0006 (0.0006) | |||||||||||
| log(H/He) | <-3.004 | ||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| log(N/He) | |||||||||||||
| log(O/He) | |||||||||||||
| log(Na/He) | |||||||||||||
| log(Mg/He) | |||||||||||||
| log(Al/He) | |||||||||||||
| log(Si/He) | |||||||||||||
| log(P/He) | |||||||||||||
| log(S/He) | |||||||||||||
| log(Cl/He) | |||||||||||||
| log(Sc/He) | |||||||||||||
| log(Ti/He) | |||||||||||||
| log(V/He) | |||||||||||||
| log(Cr/He) | |||||||||||||
| log(Mn/He) | |||||||||||||
| log(Fe/He) | |||||||||||||
| log(Co/He) | |||||||||||||
| log(Ni/He) | |||||||||||||
| log(Cu/He) | |||||||||||||
| log(Zn/He) | |||||||||||||
| log(Ga/He) | |||||||||||||
| log(Ge/He) | |||||||||||||
| log(Sr/He) | |||||||||||||
| Parallax | [mas] | 0.41 (0.3) | 0.67 (0.6) | 0.41 (0.3) | |||||||||
| Distance | [pc] | 2410.32 (1902) | 1489.93 (1257) | 2410.22 (1902) | |||||||||
| Composition | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -3.408650597 (0.3) | -3.16311697 (0.8) | -3.409 (0.3) | |||||||||
| Proper motion (declination) | [mas/yr] | -1.885860744 (0.3) | -1.377832406 (1) | -1.886 (0.3) | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 19.01 (0.02) | 19.13 (0.03) | 19.01 (0.02) | 19.12 | 19.10 (0.03) | ||||||||
| g magnitude | 19.35 (0.01) | 19.30 (0.04) | 19.35 (0.01) | 19.30 | 19.28 (0.04) | ||||||||
| r magnitude | 19.81 (0.02) | 19.85 (0.04) | 19.81 (0.02) | 19.85 | 19.84 (0.04) | ||||||||
| i magnitude | 20.20 (0.03) | 20.31 (0.06) | 20.20 (0.03) | 20.31 | 20.30 (0.06) | ||||||||
| z magnitude | 20.48 (0.1) | 20.29 (0.1) | 20.48 (0.1) | 20.29 | 20.29 (0.1) | ||||||||
| G magnitude | 19.60 (0.03) | 19.67 | 19.60 (0.004) | ||||||||||
| BP magnitude | 19.53 (0.03) | 19.38 | |||||||||||
| RP magnitude | 19.89 (0.06) | 19.75 | |||||||||||
| Pan g magnitude | 19.39 (0.03) | ||||||||||||
| Pan r magnitude | 19.82 (0.01) | ||||||||||||
| Pan i magnitude | 20.20 (0.01) | ||||||||||||
| Pan z magnitude | 20.49 (0.04) | ||||||||||||
| Pan y magnitude | 20.13 (0.1) | ||||||||||||
| E(B-V) | 0.020 | ||||||||||||
* 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.