All names: Gaia DR2 293658424540152704, SDSS J012058.02+243219.28, SDSS J012058.02+243219.4, Gaia EDR3 293658424540152704, GALEX J012057.9+243220, SDSS J012058.01+243219.3, SDSS J012255.08+452520.6, SDSS J012058.02+243219.2, Gaia DR3 293658424540152704
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 20 58.02 (0.3) | 01 20 58.01 | 01 20 58.02 (0.4) | 01 20 58.03 (0.3) | |||||
| Declination | 24 32 19.31 (0.3) | 24 32 19.32 | 24 32 19.32 (0.4) | 24 32 19.64 (0.3) | |||||
| Spectral type | DC: | DC | DC | ||||||
| Effective temperature | [K] | 12112.0 (269) | |||||||
| log(g) | [cgs] | 8.00 (0) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 3.50 (0.4) | 3.96 (0.5) | 3.50 (0.4) | |||||
| Distance | [pc] | 285.82 (34) | 252.31 (30) | 285.82 (34) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -6.494266673 (0.4) | -6.254645808 (0.9) | -6.494 (0.4) | |||||
| Proper motion (declination) | [mas/yr] | -20.41900002 (0.3) | -19.52032198 (0.7) | -20.419 (0.3) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 19.37 (0.03) | 19.42 (0.03) | 19.42 (0.02) | ||||||
| g magnitude | 19.31 (0.01) | 19.33 (0.02) | 19.35 (0.01) | ||||||
| r magnitude | 19.49 (0.01) | 19.55 (0.02) | 19.43 (0.01) | ||||||
| i magnitude | 19.57 (0.02) | 19.61 (0.02) | 19.56 (0.02) | ||||||
| z magnitude | 19.59 (0.07) | 19.59 (0.07) | 19.69 (0.06) | ||||||
| G magnitude | 19.34 (0.03) | 19.40 | 19.34 (0.004) | ||||||
| BP magnitude | 19.35 (0.03) | 19.33 | |||||||
| RP magnitude | 19.28 (0.06) | 19.32 | |||||||
| Pan g magnitude | 19.38 (0.01) | ||||||||
| Pan r magnitude | 19.44 (0.01) | ||||||||
| Pan i magnitude | 19.58 (0.01) | ||||||||
| Pan z magnitude | 19.73 (0.02) | ||||||||
| Pan y magnitude | 19.76 (0.03) | ||||||||
| E(B-V) | 0.032 | ||||||||
* 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.