All names: Gaia EDR3 1692116238728076544, HIDDEN NAME PG 1249+761, FBS 1249+762, 2MASS J12503992+7553003, Gaia DR2 1692116238728076544, GALEX J125039.6+755301, PG1249+761, PG 1249+762, UCAC4 830-013845, FBS B 1007, Gaia DR3 1692116238728076544, LAMOST J125039.87+755300.0, TIC 232522196, USNO-B1.0 1658-00069116
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 50 39.86 (0.03) | 12 50 40.00 | 12 50 39.90 (0.03) | ||
| Declination | 75 53 00.11 (0.03) | 75 53 00.21 | 75 53 00.16 (0.03) | ||
| Spectral type | He-sdO | sdOC2VIIIHe36 | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.46 (0.03) | 0.48 (0.05) | 0.46 (0.03) | |
| Distance | [pc] | 2186.75 (165) | 2085.51 (216) | 2186.75 (165) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -8.553 (0.05) | -8.522 (0.1) | -8.553 (0.05) | |
| Proper motion (declination) | [mas/yr] | -3.251 (0.04) | -3.345 (0.09) | -3.251 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.00 | ||||
| V magnitude | |||||
| R magnitude | 15.98 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.98 (0.1) | 15.98 (0.1) | |||
| H magnitude | 15.74 (0.2) | 15.74 (0.2) | |||
| K magnitude | 15.59 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.36 (0.003) | 15.38 (0.0007) | 15.36 (0.003) | ||
| BP magnitude | 15.19 (0.004) | 15.13 (0.01) | |||
| RP magnitude | 15.69 (0.005) | 15.69 (0.004) | |||
| Pan g magnitude | 15.20 (0.002) | ||||
| Pan r magnitude | 15.64 (0.002) | ||||
| Pan i magnitude | 16.02 (0.004) | ||||
| Pan z magnitude | 16.30 (0.008) | ||||
| Pan y magnitude | 16.50 (0.004) | ||||
| E(B-V) | 0.029 | ||||
* 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.