All names: LAMOST J231246.58+175159.4, Gaia DR3 2818982719370879232, GALEX J231246.5+175159, Gaia DR2 2818982719370879232, KUV 23103+1736, PG 2310+176, UCAC4 540-152066, EGGR 909, WDJ231246.57+175159.98, WD 2310+175, TIC 97173520, USNO-A2.0 1050-20597080, Gaia EDR3 2818982719370879232, SDSS J231246.59+175159.4, 2MASS J23124654+1751599
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Bergeron et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 12 46.60 (0.03) | 23 12 46.60 (0.05) | 23 12 46.60 | 23 12 46.57 (0.03) | 23 12 46.60 | 23 12 37.27 | ||||
| Declination | 17 51 58.99 (0.03) | 17 51 59.02 (0.04) | 17 51 58.99 | 17 51 59.98 (0.03) | 17 51 59.02 | 17 51 43.56 | ||||
| Spectral type | DB | DB | DB4 | DB4 | ||||||
| Effective temperature | [K] | 15170.0 (373) | 15167.0 (206) | |||||||
| log(g) | [cgs] | 8.37 (0.09) | 8.18 (0.02) | |||||||
| Mass | [M☉] | 0.82 (0.06) | 0.702 (0.01) | |||||||
| log(Luminosity) | [L☉] | -2.34 | ||||||||
| Cooling age | [Gyr] | 0.3631 | ||||||||
| log(H/He) | <-5.43 (0.3) | |||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(N/He) | ||||||||||
| log(O/He) | ||||||||||
| log(Na/He) | ||||||||||
| log(Mg/He) | ||||||||||
| log(Al/He) | ||||||||||
| log(Si/He) | ||||||||||
| log(P/He) | ||||||||||
| log(S/He) | ||||||||||
| log(Cl/He) | ||||||||||
| log(Sc/He) | ||||||||||
| log(Ti/He) | ||||||||||
| log(V/He) | ||||||||||
| log(Cr/He) | ||||||||||
| log(Mn/He) | ||||||||||
| log(Fe/He) | ||||||||||
| log(Co/He) | ||||||||||
| log(Ni/He) | ||||||||||
| log(Cu/He) | ||||||||||
| log(Zn/He) | ||||||||||
| log(Ga/He) | ||||||||||
| log(Ge/He) | ||||||||||
| log(Sr/He) | ||||||||||
| Parallax | [mas] | 13.11 (0.05) | 13.19 (0.07) | 13.11 | 13.11 (0.05) | 13.19 (0.07) | ||||
| Distance | [pc] | 76.26 (0.3) | 75.83 (0.4) | 64.00 | 76.26 | 76.26 (0.3) | 75.83 (0.4) | |||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | 32.89285495 (0.05) | 32.7876776 (0.2) | 32.893 (0.05) | 32.7876776 | |||||
| Proper motion (declination) | [mas/yr] | -61.80778131 (0.04) | -61.67413814 (0.08) | -61.808 (0.04) | -61.67413814 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 15.97 (0.06) | |||||||||
| V magnitude | 15.88 | 15.93 (0.06) | ||||||||
| R magnitude | 16.16 (0.2) | |||||||||
| I magnitude | ||||||||||
| J magnitude | 16.21 (0.09) | |||||||||
| H magnitude | 16.20 (0.2) | |||||||||
| K magnitude | ||||||||||
| u magnitude | 15.73 (0.005) | |||||||||
| g magnitude | 15.84 (0.03) | 15.80 (0.004) | ||||||||
| r magnitude | 16.21 (0.09) | 16.09 (0.004) | ||||||||
| i magnitude | 16.31 (0.004) | |||||||||
| z magnitude | 16.55 (0.009) | |||||||||
| G magnitude | 15.93 (0.002) | 15.95 | 15.93 | 15.93 (0.003) | 15.95 | |||||
| BP magnitude | 15.88 (0.002) | 15.85 | 15.85 | |||||||
| RP magnitude | 16.02 (0.002) | 16.02 | 16.02 | |||||||
| Pan g magnitude | 15.85 (0.004) | |||||||||
| Pan r magnitude | 16.09 (0.003) | |||||||||
| Pan i magnitude | 16.35 (0.003) | |||||||||
| Pan z magnitude | 16.55 (0.005) | |||||||||
| Pan y magnitude | 16.70 (0.009) | |||||||||
| E(B-V) | 0.007 | |||||||||
* 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.