All names: Gaia DR3 2738907482247205376, SDSS J000843.24+020752.7, Gaia EDR3 2738907482247205376, PB 5761, PB5761, GALEX J000843.1+020753, LBQS 0006+0151, Gaia DR2 2738907482247205376, ZYCJ 0006+018, LEDA 643, USNO-B1.0 0921-00001349, UM 204
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 00 08 43.25 (0.2) | 00 08 43.20 | 00 08 43.24 (0.2) | ||
| Declination | 02 07 52.64 (0.2) | 02 07 53.29 | 02 07 52.72 (0.2) | ||
| Spectral type | sdO | sdO | |||
| 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] | 0.28 (0.3) | 0.62 (0.4) | 0.28 (0.3) | |
| Distance | [pc] | 3562.52 (3269) | 1618.12 (1053) | 3562.52 (3269) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 9.097 (0.3) | 8.193 (0.8) | 9.097 (0.3) | |
| Proper motion (declination) | [mas/yr] | -5.061 (0.2) | -4.656 (0.5) | -5.061 (0.2) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 17.70 | ||||
| V magnitude | |||||
| R magnitude | 19.00 | ||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 18.01 (0.01) | 18.01 (0.01) | |||
| g magnitude | 18.30 (0.007) | 18.30 (0.007) | |||
| r magnitude | 18.62 (0.009) | 18.62 (0.009) | |||
| i magnitude | 18.82 (0.01) | 18.82 (0.01) | |||
| z magnitude | 19.03 (0.04) | 19.03 (0.04) | |||
| G magnitude | 18.43 (0.004) | 18.46 (0.003) | 18.43 (0.004) | ||
| BP magnitude | 18.35 (0.02) | 18.28 (0.01) | |||
| RP magnitude | 18.53 (0.03) | 18.46 (0.02) | |||
| Pan g magnitude | 18.35 (0.01) | ||||
| Pan r magnitude | 18.65 (0.008) | ||||
| Pan i magnitude | 18.85 (0.007) | ||||
| Pan z magnitude | 18.97 (0.01) | ||||
| Pan y magnitude | 19.02 (0.02) | ||||
| E(B-V) | 0.032 | ||||
* 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.