SDSS J122910.39+504736.1

All names: Gaia DR3 1544707665434144640, WD 1226+510, GALEX J122910.4+504736, Gaia EDR3 1544707665434144640, SDSS J122910.40+504736.4, J1229+5047, SDSS J122910.39+504736.1, Gaia DR2 1544707665434144640, WDJ122910.39+504736.31

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 29 10.44 (0.09) 12 29 10.39 12 29 10.44 (0.1) 12 29 10.44 12 29 10.39 (0.09) 12 29 10.44 12 29 10.39 12 29 09.74 12 29 10.39
Declination 50 47 34.94 (0.1) 50 47 36.12 50 47 34.98 (0.1) 50 47 34.94 50 47 36.31 (0.1) 50 47 34.98 50 47 36.13 50 47 31.56 50 47 36.14
Spectral type DC DC DC DC DC DC+M DC DC DC DCM: DC
Effective temperature [K] 6806.0 (56) 6814.0 (53) 7433.0 7169.0 7006.0 (159) 6818.0 (45) 6338.0 (31)
log(g) [cgs] 8.02 (0.02) 8.01 (0.03) 8.28 8.19 8.13 (0.04) 8.99 (0.02) 10.00 (0.007)
Mass [M] 0.588 (0.02) 0.578 (0.02) 0.772 0.693 0.654 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 1.7600 2.2360 2.0650
log(H/He) -3.4 -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] 10.11 (0.1) 10.00 (0.2) 10.00 (0.2) 10.11 10.11 (0.1) 10.00 (0.2)
Distance [pc] 98.92 (1) 100.00 (2) 99.97 (2) 98.92 98.92 (1) 99.97 (2)
Composition He
Proper motion (right ascension) [mas/yr] 28.39501952 (0.1) 28.65611618 (0.2) 28.395 (0.1) 28.656 33.3
Proper motion (declination) [mas/yr] -85.63387314 (0.1) -85.68875352 (0.2) -85.634 (0.1) -85.689 -85.8
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.31 (0.02) 19.32 (0.02) 19.32 (0.02) 19.32 (0.02) 19.32 (0.03) 19.32 19.32 (0.03)
g magnitude 18.80 (0.008) 18.80 (0.008) 18.80 (0.008) 18.81 (0.02) 18.81 18.81 (0.02)
r magnitude 18.66 (0.009) 18.66 (0.009) 18.66 (0.009) 18.65 (0.01) 18.65 18.65 (0.01)
i magnitude 18.68 (0.01) 18.68 (0.01) 18.68 (0.01) 18.68 (0.01) 18.68 18.68 (0.01)
z magnitude 18.70 (0.03) 18.70 (0.03) 18.70 (0.03) 18.72 (0.03) 18.72 18.72 (0.03)
G magnitude 18.62 (0.02) 18.65 18.62 18.62 (0.003) 18.65
BP magnitude 18.79 (0.02) 18.78 18.78
RP magnitude 18.36 (0.02) 18.36 18.36
Pan g magnitude 18.78 (0.005) 18.78 (0.005)
Pan r magnitude 18.64 (0.007) 18.64 (0.005)
Pan i magnitude 18.66 (0.008) 18.66 (0.008)
Pan z magnitude 18.74 (0.01) 18.74 (0.01)
Pan y magnitude 18.76 (0.02) 18.76 (0.02)
E(B-V) 0.007

* 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.