All names: SDSS J023039.27+000752.2, Gaia DR2 2500407127962139008, Gaia DR3 2500407127962139008, Gaia EDR3 2500407127962139008, GALEX J023039.2+000752, SDSS J023039.27+000752.3
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 02 30 39.28 (0.5) | 02 30 39.27 (0.5) | ||
| Declination | 00 07 52.04 (0.5) | 00 07 52.39 (0.5) | ||
| Spectral type | DB | |||
| 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] | 1.86 (0.7) | 1.86 (0.7) | |
| Distance | [pc] | 537.98 (199) | 537.98 (199) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.28 (0.8) | 6.28 (0.8) | |
| Proper motion (declination) | [mas/yr] | -21.935 (0.6) | -21.935 (0.6) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 20.07 (0.05) | |||
| g magnitude | 20.09 (0.02) | |||
| r magnitude | 20.29 (0.03) | |||
| i magnitude | 20.40 (0.04) | |||
| z magnitude | 20.83 (0.2) | |||
| G magnitude | 20.18 (0.008) | 20.18 (0.008) | ||
| BP magnitude | 20.13 (0.08) | |||
| RP magnitude | 19.99 (0.2) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| 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.