All names: Gaia DR2 580372234855004160, PG0902+057, TIC 270562073, PG 0902+057, LAMOST J090505.42+053301.3, USNO-A2.0 0900-06275387, Gaia DR3 580372234855320064, Gaia EDR3 580372234855320064, 2MASS J09050535+0533010, GALEX J090505.4+053301
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 09 05 05.34 (0.05) | 09 05 05.40 | 09 05 05.36 (0.05) | ||
| Declination | 05 33 00.91 (0.04) | 05 33 01.50 | 05 33 01.01 (0.04) | ||
| Spectral type | He-sdOB | sdBN0VIIHe38 | |||
| Effective temperature | [K] | 43630.0 (146) | |||
| log(g) | [cgs] | 6.30 (0.04) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.18 (0.05) | 1.17 (0.1) | 1.18 (0.05) | |
| Distance | [pc] | 845.17 (38) | 853.75 (84) | 845.17 (38) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -14.783 (0.05) | -14.896 (0.2) | -14.783 (0.05) | |
| Proper motion (declination) | [mas/yr] | -6.254 (0.05) | -6.177 (0.3) | -6.254 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.81 | ||||
| V magnitude | 14.03 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 14.74 (0.04) | 14.74 (0.04) | |||
| H magnitude | 14.79 (0.05) | 14.79 (0.05) | |||
| K magnitude | 15.12 (0.2) | 15.12 (0.2) | |||
| u magnitude | 14.63 (0.007) | ||||
| g magnitude | 15.11 (0.006) | ||||
| r magnitude | 14.41 (0.002) | ||||
| i magnitude | 15.22 (0.007) | ||||
| z magnitude | 15.07 (0.006) | ||||
| G magnitude | 14.06 (0.003) | 14.06 (0.0009) | 14.06 (0.003) | ||
| BP magnitude | 13.90 (0.003) | 13.84 (0.01) | |||
| RP magnitude | 14.32 (0.004) | 14.32 (0.002) | |||
| Pan g magnitude | 13.89 (0.005) | ||||
| Pan r magnitude | 14.31 (0.004) | ||||
| Pan i magnitude | 14.66 (0.002) | ||||
| Pan z magnitude | 14.94 (0.005) | ||||
| Pan y magnitude | 15.14 (0.004) | ||||
| E(B-V) | 0.035 | ||||
* 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.