All names: Gaia DR3 4920548631491764352, Gaia EDR3 4920548631491764352, Gaia DR2 4920548631491764352, EC 00318-5607, 2MASS J00340776-5551060, GSC 08468-00506, HE 0031-5607, TIC 281595262, HE0031-5607, GALEX J003407.6-555105, JL 199
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 00 34 07.76 (0.03) | 00 34 07.75 | 00 34 07.75 (0.03) | ||
| Declination | -55 51 05.91 (0.03) | -55 51 05.90 | -55 51 05.93 (0.03) | ||
| Spectral type | He-sdO | sdOHe | |||
| Effective temperature | [K] | 41423.0 (1000) | |||
| log(g) | [cgs] | 6.25 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.72 (0.04) | 0.53 (0.06) | 0.72 (0.04) | |
| Distance | [pc] | 1392.56 (84) | 1880.76 (208) | 1392.56 (84) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 7.04 (0.04) | 7.159 (0.09) | 7.04 (0.04) | |
| Proper motion (declination) | [mas/yr] | 1.761 (0.04) | 1.743 (0.09) | 1.761 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.50 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.44 (0.1) | ||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.68 (0.003) | 15.70 (0.001) | 15.68 (0.003) | ||
| BP magnitude | 15.52 (0.004) | 15.47 (0.008) | |||
| RP magnitude | 15.98 (0.005) | 15.99 (0.004) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.010 | ||||
* 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.