Gaia DR2 973275770078523520

All names: GALEX J072405.6+440005, Gaia DR3 973275770078523520, SDSS J072405.61+440005.5, WDJ072405.61+440005.83, Gaia DR2 973275770078523520, J0724+4400, Gaia EDR3 973275770078523520, WDJ07245.61+440005.83

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 07 24 05.64 (0.1) 07 24 05.64 07 24 05.64 07 24 05.61 (0.1) 07 24 05.64
Declination 44 00 04.60 (0.1) 44 00 04.63 44 00 04.60 44 00 05.83 (0.1) 44 00 04.63
Spectral type DC DC DC DA DC
Effective temperature [K] 5991.0 (42) 5997.0 (41) 5695.0 (40) 6238.0 5992.0 6344.0 (123)
log(g) [cgs] 8.15 (0.02) 8.15 (0.02) 7.96 (0.02) 8.27 8.14 8.32 (0.04)
Mass [M] 0.668 (0.02) 0.665 (0.02) 0.546 (0.02) 0.759 0.657 0.798 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 3.7300 3.7130 3.5810
log(H/He) -5
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] 14.35 (0.2) 14.19 (0.2) 14.19 (0.2) 14.35 14.35 (0.2) 14.19 (0.2)
Distance [pc] 69.69 (0.8) 70.47 (1) 70.47 (1) 69.69 69.69 (0.8) 70.47 (1)
Composition He He
Proper motion (right ascension) [mas/yr] 22.48900343 (0.2) 22.47628357 (0.3) 22.489 (0.2) 22.47628357
Proper motion (declination) [mas/yr] -77.29566622 (0.1) -77.25248455 (0.3) -77.296 (0.1) -77.25248455
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.74 (0.03)
H magnitude
K magnitude
u magnitude 19.65 (0.03) 19.65 (0.03) 19.65 (0.03)
g magnitude 18.80 (0.008) 18.80 (0.008)
r magnitude 18.47 (0.008) 18.47 (0.008)
i magnitude 18.37 (0.01) 18.37 (0.01)
z magnitude 18.38 (0.03) 18.38 (0.03)
G magnitude 18.49 (0.02) 18.52 18.49 18.49 (0.003) 18.52
BP magnitude 18.78 (0.02) 18.81 18.81
RP magnitude 18.07 (0.01) 18.10 18.10
Pan g magnitude 18.78 (0.009) 18.78 (0.008)
Pan r magnitude 18.49 (0.006) 18.49 (0.007)
Pan i magnitude 18.40 (0.003) 18.40 (0.003)
Pan z magnitude 18.39 (0.008) 18.39 (0.008)
Pan y magnitude 18.42 (0.02) 18.42 (0.03)
E(B-V) 0.002

* 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.