All names: SDSS J085419.97+603701.6, Gaia EDR3 1041123132231764864, Gaia DR3 1041123132231764864, SDSS J085419.96+603701.49, SDSS J085419.96+603701.4, Gaia DR2 1041123127935406976, USNO-A2.0 1500-05110015, GALEX 2683065674731882704
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 54 19.94 (0.1) | 08 54 19.98 | 08 54 19.94 (0.2) | 08 54 19.94 | 08 54 19.98 (0.2) | |||||
| Declination | 60 37 01.45 (0.1) | 60 37 01.66 | 60 37 01.46 (0.2) | 60 37 01.45 | 60 37 01.74 (0.2) | |||||
| Spectral type | DQ | DC | DQ | DC | ||||||
| Effective temperature | [K] | 10325.0 (500) | 10117.0 (362) | |||||||
| log(g) | [cgs] | 8.00 (0) | 8.42 (0.06) | |||||||
| Mass | [M☉] | 0.853 (0.05) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | -8.0 (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] | 7.56 (0.2) | 7.56 (0.3) | 7.56 | 7.56 (0.3) | |||||
| Distance | [pc] | 132.25 (3) | 132.30 (5) | 132.25 | 132.30 (5) | |||||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | -20.72594671 (0.1) | -20.28267702 (0.4) | -20.283 (0.4) | ||||||
| Proper motion (declination) | [mas/yr] | -17.55029049 (0.1) | -17.60328992 (0.4) | -17.603 (0.4) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 18.10 (0.3) | |||||||||
| V magnitude | ||||||||||
| R magnitude | 18.40 (0.3) | |||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 18.70 (0.02) | 18.69 (0.02) | 18.71 (0.02) | |||||||
| g magnitude | 18.52 (0.007) | 18.54 (0.02) | 18.52 (0.007) | |||||||
| r magnitude | 18.64 (0.01) | 18.64 (0.02) | 18.64 (0.01) | |||||||
| i magnitude | 18.76 (0.01) | 18.76 (0.02) | 18.76 (0.01) | |||||||
| z magnitude | 18.93 (0.04) | 18.92 (0.04) | 18.93 (0.04) | |||||||
| G magnitude | 18.53 (0.02) | 18.56 | 18.53 | 18.56 (0.003) | ||||||
| BP magnitude | 18.56 (0.02) | 18.53 | ||||||||
| RP magnitude | 18.49 (0.03) | 18.44 | ||||||||
| Pan g magnitude | 18.54 (0.006) | |||||||||
| Pan r magnitude | 18.61 (0.008) | |||||||||
| Pan i magnitude | 18.76 (0.004) | |||||||||
| Pan z magnitude | 18.93 (0.02) | |||||||||
| Pan y magnitude | 19.01 (0.04) | |||||||||
| E(B-V) | 0.008 | |||||||||
* 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.