All names: Gaia EDR3 3895376870362295680, J1210+0553, SDSS J121048.46+055348.3, GALEX J121048.4+055347, SDSS J121048.44+055348.2, Gaia DR3 3895376870362295680, Gaia DR2 3895376870362295680, SDSS J121048.44+055348.26
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Coutu et al. 2019 | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 10 48.43 (0.2) | 12 10 48.47 | 12 10 48.47 | 12 10 48.43 (0.3) | 12 10 48.43 | 12 10 48.47 (0.2) | |||||
| Declination | 05 53 48.30 (0.1) | 05 53 48.38 | 05 53 48.34 | 05 53 48.30 (0.1) | 05 53 48.30 | 05 53 48.33 (0.1) | |||||
| Spectral type | DBZA | DABZ | DZ | DABZ | DZ | ||||||
| Effective temperature | [K] | 9391.0 (558) | 11918.0 (217) | 11547.0 (653) | |||||||
| log(g) | [cgs] | 7.69 | 8.20 (0.2) | 8.00 (0.09) | |||||||
| Mass | [M☉] | 0.4131 | 0.584 (0.07) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.5020 | |||||||||
| log(H/He) | -4.6058 (0.2) | ||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | -9.7888 (0.06) | ||||||||||
| 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] | 4.92 (0.2) | 5.13 | 5.13 (0.3) | 4.92 | 4.92 (0.2) | |||||
| Distance | [pc] | 203.46 (9) | 194.87 (12) | 194.87 (12) | 203.46 | 203.45 (9) | |||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -31.64746436 (0.2) | -32.05398529 (0.5) | -31.647 (0.2) | |||||||
| Proper motion (declination) | [mas/yr] | -2.396502524 (0.1) | -2.474490222 (0.3) | -2.397 (0.1) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 18.68 (0.02) | 18.69 (0.9) | 18.68 (0.02) | ||||||||
| g magnitude | 18.65 (0.009) | 18.64 (0.4) | 18.65 (0.009) | ||||||||
| r magnitude | 18.93 (0.01) | 18.91 (0.6) | 18.93 (0.01) | ||||||||
| i magnitude | 19.17 (0.02) | 19.15 (0.9) | 19.18 (0.02) | ||||||||
| z magnitude | 19.31 (0.07) | 19.29 (3) | 19.31 (0.07) | ||||||||
| G magnitude | 18.61 (0.02) | 18.64 | 18.61 | 18.61 (0.003) | |||||||
| BP magnitude | 18.60 (0.02) | 18.56 | |||||||||
| RP magnitude | 18.64 (0.03) | 18.52 | |||||||||
| Pan g magnitude | 18.54 (0.006) | ||||||||||
| Pan r magnitude | 18.62 (0.01) | ||||||||||
| Pan i magnitude | 18.86 (0.01) | ||||||||||
| Pan z magnitude | 19.00 (0.03) | ||||||||||
| Pan y magnitude | 18.82 (0.04) | ||||||||||
| E(B-V) | 0.021 | ||||||||||
* 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.