All names: Gaia EDR3 867946782385548416, SDSS J074558.79+245041.0, Gaia DR3 867946782385548416, Gaia DR2 867946782385548416
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|
| Right ascension | 07 45 58.79 (0.7) | 07 45 58.79 | 07 45 58.79 (0.9) | 07 45 58.80 (0.7) | 07 45 58.80 | |
| Declination | 24 50 41.10 (0.6) | 24 50 41.09 | 24 50 41.10 (0.8) | 24 50 41.12 (0.6) | 24 50 41.09 | |
| Spectral type | sd | SD_auto | ||||
| Effective temperature | [K] | 20656.0 (1109) | ||||
| log(g) | [cgs] | 5.07 (0.08) | ||||
| Mass | [M☉] | |||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | -0.51 (0.8) | -1.15 (1) | |||
| Distance | [pc] | |||||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -0.617213198 (0.9) | -2.203590806 (2) | -0.617 (0.9) | ||
| Proper motion (declination) | [mas/yr] | -1.307317811 (0.9) | -3.882817189 (1) | -1.307 (0.9) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 20.38 (0.05) | 20.42 (0.06) | 20.41 (0.06) | |||
| g magnitude | 20.17 (0.02) | 20.20 (0.02) | 20.19 (0.03) | |||
| r magnitude | 20.47 (0.03) | 20.49 (0.03) | 20.48 (0.04) | |||
| i magnitude | 20.82 (0.06) | 20.82 (0.06) | 20.82 (0.05) | |||
| z magnitude | 21.51 (0.4) | 21.50 (0.4) | 21.50 (0.4) | |||
| G magnitude | 20.33 (0.07) | 20.39 | 20.33 (0.009) | |||
| BP magnitude | 20.24 (0.07) | 20.36 | ||||
| RP magnitude | 20.30 (0.1) | 20.31 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| 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.