All names: WD 2334+002, SDSS J233707.68+003242.3, WDJ233707.62+003241.79, Gaia DR2 2645946252315491200, LP 643-20, SDSS J233707.63+003241.9, LSPM J2337+0032, 2MASS J23370764+0032420, USNO-B1.0 0905-00578328, SDSS J233707.67+003242.2, TIC 422631628, Gaia EDR3 2645946252315491200, J2337+0032, SDSS J233707.69+003242.4, Gaia DR3 2645946252315491200, GSC2U J233707.4+003240, GALEX J233707.7+003243, NLTT 57399
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 37 07.95 (0.1) | 23 37 07.69 | 23 37 07.94 (0.2) | 23 37 07.95 | 23 37 07.62 (0.1) | 23 37 07.94 | 23 37 06.72 | |||||||
| Declination | 00 32 44.38 (0.1) | 00 32 42.41 | 00 32 44.30 (0.1) | 00 32 44.38 | 00 32 41.79 (0.1) | 00 32 44.30 | 00 32 42.72 | |||||||
| Spectral type | DA | DA | DA | DA | DA | |||||||||
| Effective temperature | [K] | 5749.0 (18) | 5691.0 | 5420.0 | 5704.0 (70) | |||||||||
| log(g) | [cgs] | 8.02 (0.01) | 7.99 | 7.81 | 7.99 (0.03) | |||||||||
| Mass | [M☉] | 0.598 (0.01) | 0.58 | 0.461 | 0.578 (0.02) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 2.7200 | 2.6220 | 2.8640 | ||||||||||
| 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] | 19.09 (0.1) | 19.25 (0.2) | 19.25 (0.2) | 19.09 | 19.09 (0.1) | 19.25 (0.2) | |||||||
| Distance | [pc] | 52.39 (0.4) | 51.95 (0.5) | 51.94 (0.5) | 52.39 | 52.39 (0.4) | 51.94 (0.5) | |||||||
| Composition | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 301.9906211 (0.2) | 302.0993028 (0.4) | 301.991 (0.2) | 302.0993028 | |||||||||
| Proper motion (declination) | [mas/yr] | 161.7959743 (0.1) | 161.7465726 (0.3) | 161.796 (0.1) | 161.7465726 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 18.00 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 17.60 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.78 (0.02) | 16.55 (0.1) | ||||||||||||
| H magnitude | 16.49 (0.03) | 16.17 (0.2) | ||||||||||||
| K magnitude | 16.51 (0.04) | |||||||||||||
| u magnitude | 19.27 (0.02) | 19.26 (0.03) | 19.27 (0.02) | 19.29 (0.03) | 19.34 | |||||||||
| g magnitude | 18.25 (0.007) | 18.25 (0.007) | 18.24 (0.007) | 18.28 | ||||||||||
| r magnitude | 17.81 (0.007) | 17.81 (0.007) | 17.79 (0.006) | 17.79 | ||||||||||
| i magnitude | 17.62 (0.007) | 17.62 (0.007) | 17.61 (0.007) | 17.61 | ||||||||||
| z magnitude | 17.57 (0.02) | 17.57 (0.01) | 17.55 (0.02) | 17.60 | ||||||||||
| G magnitude | 17.82 (0.01) | 17.84 | 17.82 | 17.82 (0.003) | 17.84 | |||||||||
| BP magnitude | 18.18 (0.01) | 18.17 | 18.17 | |||||||||||
| RP magnitude | 17.32 (0.009) | 17.32 | 17.32 | |||||||||||
| Pan g magnitude | 18.20 (0.004) | 18.20 (0.004) | ||||||||||||
| Pan r magnitude | 17.80 (0.005) | 17.80 (0.005) | ||||||||||||
| Pan i magnitude | 17.64 (0.004) | 17.64 (0.004) | ||||||||||||
| Pan z magnitude | 17.61 (0.008) | 17.61 (0.008) | ||||||||||||
| Pan y magnitude | 17.60 (0.01) | 17.60 (0.01) | ||||||||||||
| E(B-V) | 0.002 | |||||||||||||
* 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.