All names: Gaia EDR3 864917013671899648, SDSS J073131.56+204524.6, TIC 61033242, Gaia DR2 864917013671899648, LAMOST J073131.56+204524.6, Gaia DR3 864917013671899648, SDSSJ073131.56+204524.6, 2MASS J07313156+2045248
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 07 31 31.57 (0.05) | 07 31 31.57 | 07 31 31.57 (0.05) | ||
| Declination | 20 45 24.56 (0.04) | 20 45 24.67 | 20 45 24.70 (0.04) | ||
| Spectral type | sdO | sdO | |||
| Effective temperature | [K] | 49583.0 (454) | |||
| log(g) | [cgs] | 5.68 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.62 (0.05) | 0.59 (0.07) | 0.62 (0.05) | |
| Distance | [pc] | 1606.94 (140) | 1703.58 (217) | 1606.94 (140) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.678 (0.06) | 1.69 (0.1) | 1.678 (0.06) | |
| Proper motion (declination) | [mas/yr] | -8.468 (0.05) | -8.262 (0.1) | -8.468 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.39 (0.1) | 16.39 (0.1) | |||
| H magnitude | 17.09 | ||||
| K magnitude | 16.91 | ||||
| u magnitude | 14.98 (0.004) | 14.98 (0.004) | |||
| g magnitude | 15.36 (0.003) | 15.36 (0.003) | |||
| r magnitude | 15.86 (0.003) | 15.86 (0.003) | |||
| i magnitude | 16.20 (0.004) | 16.20 (0.004) | |||
| z magnitude | 16.55 (0.008) | 16.55 (0.008) | |||
| G magnitude | 15.62 (0.003) | 15.64 (0.001) | 15.62 (0.003) | ||
| BP magnitude | 15.46 (0.008) | 15.37 (0.02) | |||
| RP magnitude | 15.92 (0.005) | 15.90 (0.004) | |||
| Pan g magnitude | 15.46 (0.004) | ||||
| Pan r magnitude | 15.88 (0.001) | ||||
| Pan i magnitude | 16.25 (0.004) | ||||
| Pan z magnitude | 16.52 (0.005) | ||||
| Pan y magnitude | 16.73 (0.009) | ||||
| E(B-V) | 0.045 | ||||
* 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.