All names: Gaia DR2 1571742732216120832, SDSS J123345.52+570344.0, Gaia EDR3 1571742732216120832, SDSS J123345.52+570344.00, GALEX J123345.5+570343, WD 1231+573, SDSS J123345.52+570343.9, Gaia DR3 1571742732216120832
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 33 45.45 (0.5) | 12 33 45.52 | 12 33 45.45 (0.7) | 12 33 45.53 (0.5) | 12 33 45.52 | 12 33 45.07 | 12 33 45.52 | |||||
| Declination | 57 03 43.58 (0.5) | 57 03 43.88 | 57 03 43.59 (0.5) | 57 03 43.89 (0.5) | 57 03 43.96 | 57 03 40.32 | 57 03 43.97 | |||||
| Spectral type | DB | DB: | DB: | DB | DC | |||||||
| Effective temperature | [K] | 13962.0 | 13505.0 | 14767.0 (800) | 14355.0 (871) | |||||||
| log(g) | [cgs] | 8.29 | 6.26 | 8.43 (0.4) | 8.52 (0.5) | |||||||
| Mass | [M☉] | 0.771 | 0.099 | 0.911 (0.3) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | <-5.993 | |||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 0.79 (0.6) | 0.52 (0.7) | 0.79 (0.6) | ||||||||
| Distance | [pc] | 1261.37 (1000) | 1916.70 (2676) | 1261.35 (1000) | ||||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -42.0034103 (0.7) | -41.90897053 (1) | -42.003 (0.7) | -44.8 | |||||||
| Proper motion (declination) | [mas/yr] | -19.34051018 (0.7) | -18.51883502 (1) | -19.341 (0.7) | -16.1 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 20.41 (0.06) | 20.40 (0.06) | 20.40 (0.06) | 20.39 | 20.41 (0.06) | |||||||
| g magnitude | 20.41 (0.02) | 20.41 (0.02) | 20.42 (0.03) | 20.41 | 20.43 (0.02) | |||||||
| r magnitude | 20.64 (0.04) | 20.63 (0.04) | 20.64 (0.04) | 20.63 | 20.65 (0.04) | |||||||
| i magnitude | 20.89 (0.07) | 20.88 (0.07) | 20.88 (0.07) | 20.87 | 20.89 (0.07) | |||||||
| z magnitude | 20.92 (0.2) | 20.90 (0.2) | 20.94 (0.2) | 20.92 | 20.95 (0.2) | |||||||
| G magnitude | 20.54 (0.1) | 20.63 | 20.54 (0.007) | |||||||||
| BP magnitude | 20.39 (0.1) | 20.78 | ||||||||||
| RP magnitude | 20.41 (0.1) | 20.69 | ||||||||||
| Pan g magnitude | ||||||||||||
| Pan r magnitude | ||||||||||||
| Pan i magnitude | ||||||||||||
| Pan z magnitude | ||||||||||||
| Pan y magnitude | ||||||||||||
| E(B-V) | 0.018 | |||||||||||
* 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.