All names: SDSS J232043.07+011049.5, WD 2318+009, GALEX J232043.0+011050, Gaia DR2 2645677039470525568, SDSS J232043.06+011049.4, Gaia DR3 2645677043765573120, Gaia EDR3 2645677043765573120, SDSS J232043.07+011049.6, SDSS J232043.06+011049.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 20 43.10 (2) | 23 20 43.07 | 23 20 43.07 (1) | 23 20 43.08 | 23 20 42.55 | 23 20 43.07 | ||
| Declination | 01 10 49.77 (1) | 01 10 49.62 | 01 10 49.81 (1) | 01 10 49.63 | 01 10 50.52 | 01 10 49.48 | ||
| Spectral type | DA+M | DA+M | DA | DA+M | ||||
| Effective temperature | [K] | 6318.0 (25) | 6317.0 (24) | |||||
| log(g) | [cgs] | 6.61 (0.8) | 5.56 (0.5) | |||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | |||||||
| Distance | [pc] | |||||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 21.547 (3) | 16.0 | |||||
| Proper motion (declination) | [mas/yr] | -2.236 (2) | 6.9 | |||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | WDMS | WDMS | ||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 20.99 (0.08) | 23.93 (1) | 24.00 (1) | 24.00 | 24.01 (1) | |||
| g magnitude | 20.71 (0.03) | 21.90 (0.07) | 21.98 (0.2) | 21.97 | 21.99 (0.2) | |||
| r magnitude | 20.38 (0.03) | 20.70 (0.04) | 20.80 (0.04) | 20.79 | 20.80 (0.04) | |||
| i magnitude | 19.65 (0.02) | 19.82 (0.03) | 19.89 (0.03) | 19.89 | 19.90 (0.03) | |||
| z magnitude | 19.16 (0.05) | 19.29 (0.06) | 19.37 (0.06) | 19.37 | 19.36 (0.06) | |||
| G magnitude | 20.61 (0.2) | 20.61 (0.01) | ||||||
| BP magnitude | 21.01 (0.2) | |||||||
| RP magnitude | 19.48 (0.09) | |||||||
| Pan g magnitude | 20.97 (0.06) | |||||||
| Pan r magnitude | 20.56 (0.04) | |||||||
| Pan i magnitude | 19.88 (0.01) | |||||||
| Pan z magnitude | 19.44 (0.02) | |||||||
| Pan y magnitude | 19.23 (0.03) | |||||||
| 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.