All names: GALEX J020844.8-031533, Gaia EDR3 2493892620351688960, Gaia DR2 2493892620351688960, J0208-0315, Gaia DR3 2493892620351688960, SDSS J020844.85-031535.4, SDSS J020844.85-031535.46
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Coutu et al. 2019 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 08 44.84 (0.8) | 02 08 44.85 | 02 08 44.84 | 02 08 44.84 (0.8) | ||||
| Declination | -03 15 35.44 (0.6) | -03 15 35.46 | -03 15 35.48 | -03 15 35.44 (0.6) | ||||
| Spectral type | DQ | DQ | DQ | |||||
| Effective temperature | [K] | 7233.0 (253) | 11865.0 (500) | |||||
| log(g) | [cgs] | 8.00 | 8.00 (0) | |||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | 0.0000 | ||||||
| log(H/He) | ||||||||
| log(C/He) | -6.1329 (0.3) | -3.0 (0) | ||||||
| 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] | 1.43 (1) | 1.43 (1) | |||||
| Distance | [pc] | 700.75 (503) | 235.16 (14) | 700.77 (504) | ||||
| Composition | He | He | ||||||
| Proper motion (right ascension) | [mas/yr] | -0.091353964 (0.9) | -0.091 (0.9) | |||||
| Proper motion (declination) | [mas/yr] | -0.366499564 (0.9) | -0.366 (0.9) | |||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 20.77 (0.08) | 20.80 (0.07) | 20.80 (0.07) | |||||
| g magnitude | 20.42 (0.02) | 20.42 (0.03) | 20.42 (0.03) | |||||
| r magnitude | 20.37 (0.03) | 20.38 (0.03) | 20.38 (0.03) | |||||
| i magnitude | 20.24 (0.03) | 20.24 (0.04) | 20.24 (0.04) | |||||
| z magnitude | 20.22 (0.1) | 20.21 (0.1) | 20.21 (0.1) | |||||
| G magnitude | 20.31 (0.1) | 20.31 (0.008) | ||||||
| BP magnitude | 20.51 (0.1) | |||||||
| RP magnitude | 19.95 (0.1) | |||||||
| Pan g magnitude | 20.42 (0.02) | |||||||
| Pan r magnitude | 20.37 (0.04) | |||||||
| Pan i magnitude | 20.33 (0.02) | |||||||
| Pan z magnitude | 20.34 (0.04) | |||||||
| Pan y magnitude | 19.76 (0.1) | |||||||
| E(B-V) | 0.027 | |||||||
* 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.