WD 0409+237

All names: Gaia EDR3 149824883240282496, WD 0409+237, LSPM J0412+2354, Gaia DR3 149824883240282496, EGGR 480, Gaia DR2 149824883240282496, USNO-B1.0 1139-00048581, WDJ041234.00+235417.21, WD 0409+23, LP 357-186, J0412+2354, GALEX J041234.0+235414, NLTT 12736, 0409+237

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Caron et al. 2023 Leggett et al. 2018 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 04 12 34.24 (0.2) 04 12 34.24 (0.2) 04 12 34.24 04 12 34.00 (0.2) 04 12 34.24 04 12 24.00
Declination 23 54 10.82 (0.09) 23 54 11.02 (0.1) 23 54 10.82 23 54 17.22 (0.09) 23 54 11.02 23 54 39.24
Spectral type DC: DC:6.7 DC7 DC7 DA DC7 DC7
Effective temperature [K] 6932.0 (160) 7378.0 (229) 7485.0 7159.0 7144.0 (124)
log(g) [cgs] 8.33 (0.04) 8.54 (0.05) 8.55 8.45 8.45 (0.03)
Mass [M] 0.787 (0.03) 0.935 (0.04) 0.948 0.87 0.881 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 3.1600 3.4740 (0.3) 3.4450 3.3820
log(H/He) -3.4
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] 12.73 (0.2) 12.83 (0.2) 13.06 (0.5) 12.83 (0.2) 12.73 12.73 (0.2) 12.83 (0.2)
Distance [pc] 78.55 (1) 77.94 (1) 76.57 (3) 77.95 (1) 78.55 78.55 (1) 77.95 (1)
Composition He
Proper motion (right ascension) [mas/yr] 208.1498508 (0.2) 208.5412655 (0.5) 208.15 (0.2) 208.5412655
Proper motion (declination) [mas/yr] -399.8500902 (0.2) -399.572825 (0.4) -399.85 (0.2) -399.572825
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.40
V magnitude
R magnitude 18.30
I magnitude
J magnitude 17.97 (0.06)
H magnitude
K magnitude 18.02 (0.2)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 18.53 (0.02) 18.55 18.53 18.53 (0.003) 18.55
BP magnitude 18.73 (0.02) 18.72 18.72
RP magnitude 18.18 (0.02) 18.16 18.16
Pan g magnitude 18.66 (0.05) 18.66 (0.05)
Pan r magnitude 18.53 (0.007) 18.53 (0.01)
Pan i magnitude 18.54 (0.01) 18.54 (0.01)
Pan z magnitude 18.59 (0.006) 18.59 (0.006)
Pan y magnitude 18.77 (0.1) 18.77 (0.1)
E(B-V) 0.004

* 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.