All names: TIC 212596778, GALEXJ20251-0334, GALEX J202507.0-033401, WISEA J202507.03-033401.4, Gaia DR2 4219641098708532736, UCAC4 433-112062, WISE J202507.03-033401.3, UCAC2 30607814, Gaia EDR3 4219641403649156352, Gaia DR3 4219641098708532736, 2MASS J20250704-0334014
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 25 12.35 (0.5) | 20 25 07.09 | 20 25 07.04 (0.04) | ||
| Declination | -03 34 03.88 (0.4) | -03 34 01.65 | -03 34 01.43 (0.03) | ||
| 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] | 1.73 (0.6) | 0.50 (0.07) | 0.60 (0.05) | |
| Distance | [pc] | 576.73 (205) | 1983.34 (258) | 1653.99 (136) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.177 (0.6) | -1.604 (0.1) | -1.98 (0.05) | |
| Proper motion (declination) | [mas/yr] | -8.403 (0.6) | -3.048 (0.07) | -2.738 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.94 (0.05) | ||||
| V magnitude | 15.25 (0.05) | ||||
| R magnitude | 15.43 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.05 (0.04) | 15.05 (0.04) | |||
| H magnitude | 14.90 (0.07) | 14.90 (0.07) | |||
| K magnitude | 14.83 (0.1) | 14.83 (0.1) | |||
| u magnitude | |||||
| g magnitude | 14.97 (0.03) | ||||
| r magnitude | 15.26 (0.1) | ||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 20.28 (0.006) | 15.05 (0.0007) | 15.04 (0.003) | ||
| BP magnitude | 20.68 (0.1) | 14.89 (0.007) | |||
| RP magnitude | 19.60 (0.09) | 15.12 (0.003) | |||
| Pan g magnitude | 14.98 (0.0007) | ||||
| Pan r magnitude | 15.24 (0.0007) | ||||
| Pan i magnitude | 15.46 (0.002) | ||||
| Pan z magnitude | 15.61 (0.003) | ||||
| Pan y magnitude | 15.70 (0.004) | ||||
| E(B-V) | 0.081 | ||||
* 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.