Gaia DR2 3930720057454344960

All names: Gaia EDR3 3930720057454344960, J1254+1432, LAMOST J125438.34+143228.2, Gaia DR3 3930720057454344960, GALEX J125438.3+143228, WDJ125438.31+143228.61, Gaia DR2 3930720057454344960, SDSS J125438.31+143228.4, SDSS J125438.32+143228.5

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 12 54 38.36 (0.06) 12 54 38.36 12 54 38.36 12 54 38.31 (0.06) 12 54 38.36
Declination 14 32 27.87 (0.04) 14 32 27.90 14 32 27.87 14 32 28.61 (0.04) 14 32 27.90
Spectral type DC DC DC DC DC
Effective temperature [K] 9578.0 (52) 9776.0 (49) 9577.0 (52) 10035.0 9965.0 9390.0 (110)
log(g) [cgs] 8.04 (0.01) 8.10 (0.01) 8.05 (0.01) 8.27 8.20 8.03 (0.02)
Mass [M] 0.604 (0.01) 0.64 (0.01) 0.609 (0.01) 0.77 0.706 0.595 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.8000 0.8947 0.8486
log(H/He) -4.4 -4.6 -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] 13.27 (0.08) 13.35 (0.1) 13.35 (0.1) 13.27 13.27 (0.08) 13.35 (0.1)
Distance [pc] 75.36 (0.5) 74.91 (0.7) 74.91 (0.7) 75.36 75.36 (0.5) 74.91 (0.7)
Composition He
Proper motion (right ascension) [mas/yr] 41.84820062 (0.1) 41.55999908 (0.2) 41.848 (0.1) 41.55999908
Proper motion (declination) [mas/yr] -46.00853492 (0.1) -46.21115799 (0.2) -46.009 (0.1) -46.21115799
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 16.91 (0.01)
H magnitude 16.97 (0.04)
K magnitude 16.99 (0.07)
u magnitude 17.08 (0.008) 17.08 (0.008) 17.08 (0.008)
g magnitude 16.93 (0.004) 16.93 (0.004)
r magnitude 17.02 (0.005) 17.02 (0.005)
i magnitude 17.18 (0.006) 17.18 (0.006)
z magnitude 17.32 (0.02) 17.32 (0.02)
G magnitude 16.93 (0.006) 16.95 16.93 16.93 (0.003) 16.95
BP magnitude 16.97 (0.006) 16.94 16.94
RP magnitude 16.84 (0.007) 16.83 16.83
Pan g magnitude 16.95 (0.003) 16.95 (0.003)
Pan r magnitude 17.02 (0.003) 17.02 (0.004)
Pan i magnitude 17.17 (0.002) 17.17 (0.002)
Pan z magnitude 17.34 (0.005) 17.34 (0.005)
Pan y magnitude 17.44 (0.007) 17.44 (0.009)
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.