All names: SDSS J125248.84+521604.1, SDSS J125248.83+521604.0, SDSSJ125248.84+521604.0, SDSS J125248.84+521604.0, SBSS 1250+525, [BGK2006] J125248.84+521604.1, SDSS J125248.85+521604.2, Gaia DR2 1569614047640994816, Gaia DR3 1569614047640994816, GALEX J125248.8+521604, Gaia EDR3 1569614047640994816
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 52 48.85 (0.08) | 12 52 48.84 | 12 52 48.84 | 12 52 48.85 (0.1) | 12 52 48.85 (0.08) | 12 52 48.84 | |||
| Declination | 52 16 04.05 (0.08) | 52 16 04.09 | 52 16 04.08 | 52 16 04.05 (0.1) | 52 16 04.08 (0.08) | 52 16 04.10 | |||
| Spectral type | sdB | sdB | SD_auto | ||||||
| Effective temperature | [K] | 18136.0 (235) | |||||||
| log(g) | [cgs] | 5.00 (0.001) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.20 (0.1) | 0.15 (0.1) | 0.15 (0.1) | 0.20 (0.1) | ||||
| Distance | [pc] | 5082.22 (2956) | 6640.11 (6481) | 6640.11 (6481) | 5081.30 (2954) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -2.621428143 (0.1) | -2.54 (0.2) | -2.54 (0.2) | -2.621 (0.1) | -1.1 | |||
| Proper motion (declination) | [mas/yr] | -2.107413133 (0.1) | -2.013 (0.2) | -2.013 (0.2) | -2.107 (0.1) | 0.2 | |||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 17.50 | ||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 18.54 (0.02) | 18.54 (0.02) | 18.54 (0.02) | 18.55 (0.03) | |||||
| g magnitude | 18.01 (0.006) | 18.01 (0.006) | 18.01 (0.006) | 18.03 (0.03) | |||||
| r magnitude | 18.38 (0.008) | 18.38 (0.008) | 18.38 (0.008) | 18.39 (0.02) | |||||
| i magnitude | 18.66 (0.01) | 18.66 (0.01) | 18.66 (0.01) | 18.66 (0.04) | |||||
| z magnitude | 18.81 (0.04) | 18.81 (0.04) | 18.81 (0.04) | 18.81 (0.04) | |||||
| G magnitude | 18.22 (0.02) | 18.26 (0.002) | 18.26 | 18.22 (0.003) | |||||
| BP magnitude | 18.18 (0.02) | 18.16 (0.02) | 18.16 | ||||||
| RP magnitude | 18.28 (0.03) | 18.30 (0.02) | 18.30 | ||||||
| Pan g magnitude | 18.11 (0.004) | 18.11 (0.004) | |||||||
| Pan r magnitude | 18.38 (0.005) | 18.39 (0.005) | |||||||
| Pan i magnitude | 18.66 (0.007) | 18.66 (0.007) | |||||||
| Pan z magnitude | 18.80 (0.02) | 18.80 (0.02) | |||||||
| Pan y magnitude | 18.95 (0.02) | 18.95 (0.02) | |||||||
| E(B-V) | 0.019 | ||||||||
* 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.