All names: TD1 32709, TYC 4882-934-1, 2MASS J09070812-0306139, Gaia DR3 5762960596350664832, [CW83] 0904-02, uvby98 942090402, UVO0904-02, Gaia DR2 5762960596350664832, LAMOST J090708.12-030613.9, TIC 280775141
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 09 07 08.02 | 09 07 08.12 (0.05) | ||
| Declination | -03 06 15.90 | -03 06 13.99 (0.04) | ||
| Spectral type | He-sdO | sdO7.5VIHe39 | ||
| Effective temperature | [K] | 46200.0 (250) | ||
| log(g) | [cgs] | 5.64 (0.05) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 2.16 (0.07) | 1.92 (0.06) | |
| Distance | [pc] | 463.52 (16) | 521.92 (16) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -31.919 (0.1) | -31.99 (0.06) | |
| Proper motion (declination) | [mas/yr] | 3.738 (0.2) | 3.73 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 11.72 (0.1) | |||
| V magnitude | 12.25 (0.3) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 12.64 (0.03) | 12.64 (0.03) | ||
| H magnitude | 12.80 (0.03) | 12.80 (0.03) | ||
| K magnitude | 12.88 (0.04) | 12.88 (0.04) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 11.88 (0.0007) | 11.86 (0.003) | ||
| BP magnitude | 11.64 (0.008) | |||
| RP magnitude | 12.20 (0.001) | |||
| Pan g magnitude | 11.76 | |||
| Pan r magnitude | 12.24 | |||
| Pan i magnitude | 12.61 | |||
| Pan z magnitude | 12.90 | |||
| Pan y magnitude | 13.03 (0.003) | |||
| E(B-V) | 0.028 | |||
* 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.