All names: Gaia DR3 3694071139016495232, SDSS J122833.90-012311.6, GALEX J122833.8-012311, [BGK2006] J122833.90-012311.7, Gaia EDR3 3694071139016495232, Gaia DR2 3694071139016495232
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|
| Right ascension | 12 28 33.90 (0.1) | 12 28 33.90 | 12 28 33.90 (0.1) | 12 28 33.90 (0.1) | 12 28 33.90 | ||
| Declination | -01 23 11.69 (0.06) | -01 23 11.63 | -01 23 11.68 (0.09) | -01 23 11.65 (0.06) | -01 23 11.66 | ||
| Spectral type | sdB | SDB | |||||
| Effective temperature | [K] | 7850.0 (15) | |||||
| log(g) | [cgs] | 5.00 (0.007) | |||||
| Mass | [M☉] | ||||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | -0.21 (0.1) | -0.09 (0.2) | ||||
| Distance | [pc] | ||||||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | -0.957307621 (0.1) | -1.288281663 (0.4) | -0.957 (0.1) | 4.0 | ||
| Proper motion (declination) | [mas/yr] | -2.314586132 (0.1) | -2.392095555 (0.2) | -2.315 (0.1) | 2.8 | ||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | |||||||
| V magnitude | |||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | |||||||
| H magnitude | |||||||
| K magnitude | |||||||
| u magnitude | 18.23 (0.01) | 18.23 (0.01) | 18.21 (0.02) | ||||
| g magnitude | 17.39 (0.005) | 17.39 (0.005) | 17.42 (0.02) | ||||
| r magnitude | 17.71 (0.006) | 17.71 (0.006) | 17.73 (0.01) | ||||
| i magnitude | 17.92 (0.008) | 17.92 (0.008) | 17.92 (0.02) | ||||
| z magnitude | 18.14 (0.03) | 18.14 (0.03) | 18.14 (0.03) | ||||
| G magnitude | 17.58 (0.008) | 17.60 | 17.58 (0.003) | ||||
| BP magnitude | 17.59 (0.008) | 17.55 | |||||
| RP magnitude | 17.66 (0.01) | 17.62 | |||||
| Pan g magnitude | 17.47 (0.006) | ||||||
| Pan r magnitude | 17.72 (0.006) | ||||||
| Pan i magnitude | 17.98 (0.01) | ||||||
| Pan z magnitude | 18.10 (0.01) | ||||||
| Pan y magnitude | 18.18 (0.01) | ||||||
| E(B-V) | |||||||
* 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.