LSPM J1237+1814

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

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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.