Gaia DR2 14862584004642688

All names: LSPM J0307+0936, SDSS J030711.89+093647.6, TIC 365337410, Gaia DR2 14862584004642688, SDSS J030711.89+093647.7, J0307+0936, WDJ030711.85+093648.75, GALEX J030711.8+093649, LP 471-53, 2MASS J03071184+0936486, NLTT 9941, USNO-B1.0 0996-00038888, Gaia DR3 14862584004642688, Gaia EDR3 14862584004642688

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 Kilic et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 03 07 12.02 (0.08) 03 07 12.02 03 07 12.02 03 07 11.85 (0.08) 03 07 12.02
Declination 09 36 44.35 (0.07) 09 36 44.49 09 36 44.35 09 36 48.75 (0.07) 09 36 44.49
Spectral type DC DC DC DZ DC
Effective temperature [K] 6481.0 (32) 6286.0 (26) 6146.0 (30) 7237.0 6966.0 6510.0 (82)
log(g) [cgs] 8.24 (0.01) 8.15 (0.01) 8.09 (0.01) 8.49 8.39 8.29 (0.02)
Mass [M] 0.729 (0.01) 0.668 (0.01) 0.626 (0.01) 0.909 0.83 0.76 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 3.0300 3.4950 3.3880
log(H/He) -3.2 -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] 20.48 (0.1) 20.60 (0.1) 20.60 (0.1) 20.48 20.48 (0.1) 20.60 (0.1)
Distance [pc] 48.82 (0.2) 48.54 (0.3) 48.53 (0.3) 48.82 48.82 (0.2) 48.53 (0.3)
Composition He He
Proper motion (right ascension) [mas/yr] 159.8425882 (0.1) 159.348154 (0.2) 159.843 (0.1) 159.348154
Proper motion (declination) [mas/yr] -275.0854834 (0.09) -275.1972063 (0.2) -275.085 (0.09) -275.1972063
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.40
V magnitude
R magnitude 17.80
I magnitude
J magnitude 16.94 (0.02) 16.75 (0.1)
H magnitude
K magnitude
u magnitude 18.53 (0.02) 18.54 (0.01) 18.54 (0.01)
g magnitude 17.70 (0.005) 17.70 (0.005)
r magnitude 17.48 (0.006) 17.48 (0.006)
i magnitude 17.47 (0.007) 17.47 (0.007)
z magnitude 17.55 (0.01) 17.55 (0.01)
G magnitude 17.49 (0.01) 17.51 17.49 17.49 (0.003) 17.51
BP magnitude 17.70 (0.01) 17.73 17.73
RP magnitude 17.19 (0.01) 17.18 17.18
Pan g magnitude 17.67 (0.004) 17.67 (0.004)
Pan r magnitude 17.49 (0.007) 17.49 (0.008)
Pan i magnitude 17.50 (0.006) 17.50 (0.006)
Pan z magnitude 17.57 (0.01) 17.57 (0.01)
Pan y magnitude 17.61 (0.005) 17.61 (0.006)
E(B-V) 0.001

* 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.