All names: GALEX J122302.3+313842, SDSS J122302.34+313842.2, SDSS J122302.34+313842.0, Gaia EDR3 4015391278949763200, LAMOST J122302.34+313841.9, SDSS J122302.35+313842.03, SDSS J122302.35+313842.0, Gaia DR3 4015391278949763200, CSO 135, Gaia DR2 4015391278949763200
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Guo et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 23 02.35 (0.09) | 12 23 02.34 | 12 23 02.35 (0.1) | 12 23 02.35 | 12 23 02.34 (0.09) | |||||||
| Declination | 31 38 41.80 (0.09) | 31 38 42.27 | 31 38 41.82 (0.1) | 31 38 41.80 | 31 38 42.31 (0.09) | |||||||
| Spectral type | DA | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 31128.0 (131) | 30710.0 (110) | 31287.0 (168) | 31038.0 (2230) | |||||||
| log(g) | [cgs] | 7.83 (0.03) | 7.91 (0.02) | 7.89 (0.04) | 7.78 (0.09) | |||||||
| Mass | [M☉] | 0.56 (0.01) | 0.602 (0.009) | 0.59 (0.02) | 0.537 (0.06) | |||||||
| log(Luminosity) | [L☉] | -0.71 (0.02) | ||||||||||
| Cooling age | [Gyr] | 0.0078 (0.0002) | ||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(C/H) | ||||||||||||
| log(N/H) | ||||||||||||
| log(O/H) | ||||||||||||
| log(Na/H) | ||||||||||||
| log(Mg/H) | ||||||||||||
| log(Al/H) | ||||||||||||
| log(Si/H) | ||||||||||||
| log(P/H) | ||||||||||||
| log(S/H) | ||||||||||||
| log(Sc/H) | ||||||||||||
| log(Ti/H) | ||||||||||||
| log(Cr/H) | ||||||||||||
| log(Mn/H) | ||||||||||||
| log(Fe/H) | ||||||||||||
| log(Ni/H) | ||||||||||||
| Parallax | [mas] | 2.56 (0.1) | 2.33 (0.1) | 2.56 | 2.56 (0.1) | |||||||
| Distance | [pc] | 390.46 (17) | 428.35 (25) | 390.46 | 390.46 (17) | |||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 12.23675819 (0.1) | 12.23490574 (0.2) | 12.237 (0.1) | ||||||||
| Proper motion (declination) | [mas/yr] | -31.7993667 (0.1) | -31.42583372 (0.2) | -31.799 (0.1) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 17.08 (0.008) | 17.05 (0.02) | 17.06 (0.008) | |||||||||
| g magnitude | 17.31 (0.005) | 17.30 (0.02) | 17.29 (0.005) | |||||||||
| r magnitude | 17.79 (0.006) | 17.79 (0.01) | 17.79 (0.006) | |||||||||
| i magnitude | 18.13 (0.008) | 18.15 (0.02) | 18.13 (0.008) | |||||||||
| z magnitude | 18.46 (0.03) | 18.47 (0.03) | 18.46 (0.03) | |||||||||
| G magnitude | 17.55 (0.007) | 17.58 | 17.55 | 17.55 (0.003) | ||||||||
| BP magnitude | 17.42 (0.007) | 17.36 | ||||||||||
| RP magnitude | 17.86 (0.01) | 17.83 | ||||||||||
| Pan g magnitude | 17.37 (0.004) | |||||||||||
| Pan r magnitude | 17.78 (0.005) | |||||||||||
| Pan i magnitude | 18.14 (0.007) | |||||||||||
| Pan z magnitude | 18.42 (0.01) | |||||||||||
| Pan y magnitude | 18.59 (0.01) | |||||||||||
| E(B-V) | 0.014 | |||||||||||
* 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.