All names: UBV M 4883, [CJ92] SA 4 13, Gaia EDR3 1135587497636732672, AG+75 374, BD75325, Renson 18360, UBV 7736, BSD 4-566, GEN# +0.07500325, FB 49, SAO 6435, BD+75 325, TD1 30853, Gaia DR3 1135587497636732672, GAT 253, PPM 6937, TYC 4380-2196-1, HIC 40047, HIP 40047, 2MASS J08104947+7457579, Gaia DR2 1135587497636732672, uvby98 007500325 V, GSC 04380-02196, TIC 441630081, NSV 17739, GCRV 59332, ALS 18862
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 10 49.52 (0.04) | 08 10 49.47 | 08 10 49.49 (0.04) | ||
| Declination | 74 57 58.10 (0.05) | 74 57 57.80 | 74 57 57.93 (0.05) | ||
| Spectral type | He-sdO | sdO5 | |||
| 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] | 6.88 (0.06) | 6.63 (0.06) | 6.88 (0.06) | |
| Distance | [pc] | 145.37 (1) | 150.85 (1) | 145.37 (1) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 7.143 (0.05) | 7.173 (0.09) | 7.143 (0.05) | |
| Proper motion (declination) | [mas/yr] | 10.572 (0.06) | 10.299 (0.1) | 10.572 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 9.23 (0.02) | ||||
| V magnitude | 9.50 (0.02) | ||||
| R magnitude | 9.70 | ||||
| I magnitude | 9.88 | ||||
| J magnitude | 10.26 (0.02) | 10.26 (0.02) | |||
| H magnitude | 10.43 (0.02) | 10.43 (0.02) | |||
| K magnitude | 10.55 (0.02) | 10.55 (0.02) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 9.48 (0.003) | 9.49 (0.0008) | 9.49 (0.003) | ||
| BP magnitude | 9.30 (0.003) | 9.32 (0.003) | |||
| RP magnitude | 9.83 (0.004) | 9.84 (0.002) | |||
| Pan g magnitude | 9.30 | ||||
| Pan r magnitude | 9.83 | ||||
| Pan i magnitude | 10.20 | ||||
| Pan z magnitude | 10.52 | ||||
| Pan y magnitude | 10.76 | ||||
| E(B-V) | 0.009 | ||||
* 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.