All names: WDJ123700.81+181458.29, PM J12370+1814, LSPM J1237+1814, Gaia DR3 3947604806549970560, SDSS J123700.75+181457.5, NLTT 31292, USNO-B1.0 1082-00232199, LP 435-363, SDSS J123700.66+181456.5, Gaia DR2 3947604806549970560, J1237+1814, Gaia EDR3 3947604806549970560, SDSS J123700.74+181457.5, WD 1234+185, 12370+1814, GALEX J123700.7+181457, SDSS J123700.66+181456.56
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Limoges et al. 2015 | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 12 37 00.62 (0.07) | 12 37 00.75 | 12 37 00.75 | 12 37 00.63 (0.1) | 12 37 00.62 | 12 37 00.81 (0.07) | 12 37 00.63 | 12 37 00.31 | ||||||||||
Declination | 18 14 56.10 (0.07) | 18 14 57.50 | 18 14 57.50 | 18 14 56.17 (0.07) | 18 14 56.10 | 18 14 58.29 (0.07) | 18 14 56.17 | 18 15 11.88 | ||||||||||
Spectral type | DC | DC | DC | DC | DC | DC | DC | DC | DC | DC | DC | |||||||
Effective temperature | [K] | 9377.0 (80) | 9520.0 (62) | 10023.0 | 9959.0 | 9860.0 (256) | 10064.0 (1000) | 9590.0 (165) | ||||||||||
log(g) | [cgs] | 7.96 (0.01) | 7.99 (0.01) | 8.22 | 8.15 | 8.00 (0) | 9.00 (0.5) | 8.05 (0.03) | ||||||||||
Mass | [M☉] | 0.559 (0.01) | 0.575 (0.01) | 0.739 | 0.675 | 0.58 (0.1) | 0.61 (0.02) | |||||||||||
log(Luminosity) | [L☉] | -2.87 | ||||||||||||||||
Cooling age | [Gyr] | 0.7400 | 0.8340 | 0.7933 | ||||||||||||||
log(H/He) | -4.4 | -4.4 | ||||||||||||||||
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] | 13.75 (0.08) | 13.67 (0.1) | 13.67 (0.1) | 13.75 | 13.75 (0.08) | 13.67 (0.1) | |||||||||||
Distance | [pc] | 72.72 (0.4) | 73.15 (0.6) | 73.13 (0.6) | 80.00 (9) | 72.72 | 72.72 (0.4) | 73.13 (0.6) | ||||||||||
Composition | He | He | ||||||||||||||||
Proper motion (right ascension) | [mas/yr] | -172.0423817 (0.1) | -171.9893559 (0.3) | -172.042 (0.1) | -171.989 | |||||||||||||
Proper motion (declination) | [mas/yr] | -136.739404 (0.1) | -136.7178959 (0.2) | -136.739 (0.1) | -136.718 | |||||||||||||
Variability | ||||||||||||||||||
Magnetic | ||||||||||||||||||
Bd | [MG] | |||||||||||||||||
Infrared excess (disk) | ||||||||||||||||||
Binarity | ||||||||||||||||||
B magnitude | 17.80 | |||||||||||||||||
V magnitude | ||||||||||||||||||
R magnitude | 16.80 | |||||||||||||||||
I magnitude | ||||||||||||||||||
J magnitude | 16.80 (0.02) | |||||||||||||||||
H magnitude | ||||||||||||||||||
K magnitude | ||||||||||||||||||
u magnitude | 16.98 (0.008) | 16.98 (0.008) | 17.00 (0.008) | 16.96 | 16.98 (0.01) | 16.98 (0.008) | 16.98 (0.008) | |||||||||||
g magnitude | 16.79 (0.005) | 16.79 (0.005) | 16.79 | 16.79 (0) | 16.79 (0.005) | 16.79 (0.005) | ||||||||||||
r magnitude | 16.88 (0.005) | 16.88 (0.005) | 16.88 | 16.88 (0) | 16.89 (0.005) | 16.89 (0.005) | ||||||||||||
i magnitude | 17.03 (0.006) | 17.03 (0.006) | 17.03 | 17.03 (0.01) | 17.03 (0.006) | 17.03 (0.006) | ||||||||||||
z magnitude | 17.17 (0.01) | 17.17 (0.01) | 17.17 | 17.17 (0.01) | 17.17 (0.01) | 17.17 (0.01) | ||||||||||||
G magnitude | 16.81 (0.005) | 16.83 | 16.81 | 16.81 (0.003) | 16.83 | |||||||||||||
BP magnitude | 16.86 (0.005) | 16.84 | 16.84 | |||||||||||||||
RP magnitude | 16.76 (0.01) | 16.73 | 16.73 | |||||||||||||||
Pan g magnitude | 16.84 (0.005) | 16.84 (0.006) | ||||||||||||||||
Pan r magnitude | 16.89 (0.004) | 16.89 (0.004) | ||||||||||||||||
Pan i magnitude | 17.06 (0.006) | 17.06 (0.006) | ||||||||||||||||
Pan z magnitude | 17.20 (0.003) | 17.20 (0.004) | ||||||||||||||||
Pan y magnitude | 17.34 (0.01) | 17.34 (0.01) | ||||||||||||||||
E(B-V) | 0.003 |
* 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.