All names: SDSS J080007.46+521820.82, Gaia DR2 936477422294545664, SDSS J080007.46+521820.8, SDSS J080007.45+521820.8, Gaia EDR3 936477422294545664, Gaia DR3 936477422294545664, GALEX J080007.3+521821
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|
| Right ascension | 08 00 07.47 (3) | 08 00 07.46 | 08 00 07.47 (13) | 08 00 07.47 (3) | |||
| Declination | 52 18 20.82 (2) | 52 18 20.82 | 52 18 20.82 (11) | 52 18 20.82 (2) | |||
| Spectral type | DO | DC_BLLac | DC? | ||||
| Effective temperature | [K] | 49277.0 (1891) | 51333.0 (5000) | ||||
| log(g) | [cgs] | 7.97 (0.7) | 8.00 (0) | ||||
| Mass | [M☉] | 0.63 (0.3) | |||||
| log(Luminosity) | [L☉] | -0.01 (0.5) | |||||
| Cooling age | [Gyr] | 0.0024 (0.002) | |||||
| log(H/He) | |||||||
| 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] | ||||||
| Distance | [pc] | ||||||
| Composition | He | ||||||
| Proper motion (right ascension) | [mas/yr] | ||||||
| Proper motion (declination) | [mas/yr] | ||||||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | |||||||
| V magnitude | |||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | |||||||
| H magnitude | |||||||
| K magnitude | |||||||
| u magnitude | 20.44 (0.05) | 20.45 (0.05) | 20.45 (0.05) | ||||
| g magnitude | 20.79 (0.03) | 20.81 (0.03) | 20.81 (0.03) | ||||
| r magnitude | 21.30 (0.06) | 21.28 (0.06) | 21.28 (0.06) | ||||
| i magnitude | 21.68 (0.1) | 21.69 (0.1) | 21.69 (0.1) | ||||
| z magnitude | 21.93 (0.4) | 21.98 (0.4) | 21.98 (0.4) | ||||
| G magnitude | 21.04 (0.3) | 21.13 | 21.04 (0.02) | ||||
| BP magnitude | 20.02 (0.3) | ||||||
| RP magnitude | 20.11 (0.2) | ||||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
| E(B-V) | |||||||
* 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.