WD 1449+602

All names: SDSS J145031.30+600101.40, WD 1449+602, Gaia DR3 1617480977118079360, SDSS J145031.30+600101.4, Gaia EDR3 1617480977118079360, SDSS J145031.29+600101.3, GALEX J145031.3+600101, Gaia DR2 1617480977118079360, SDSS J145031.36+600101.0, SDSS J145031.30+600101.3

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 14 50 31.36 (0.2) 14 50 31.29 14 50 31.36 (0.2) 14 50 31.36 14 50 31.29 (0.2) 14 50 31.30 14 50 30.26 14 50 31.30
Declination 60 01 00.93 (0.2) 60 01 01.36 60 01 00.94 (0.2) 60 01 00.93 60 01 01.32 (0.2) 60 01 01.35 60 00 59.04 60 01 01.41
Spectral type DB DB DB DB DB3.2 DB DB
Effective temperature [K] 15143.0 14827.0 13942.0 15262.0 (73) 13051.0 (689) 16097.0 (159) 15427.0 (175)
log(g) [cgs] 8.02 7.95 7.87 8.00 (0) 7.91 (0.09) 8.40 (0.1) 8.38 (0.1)
Mass [M] 0.603 0.559 0.513 0.536 (0.07) 0.821 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.2038
log(H/He) <-6.213 <-5.29
log(C/He)
log(Ca/He) <-7.3
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] 3.20 (0.2) 2.90 (0.2) 3.20 3.20 (0.2)
Distance [pc] 312.78 (16) 345.25 (26) 339.00 312.78 312.77 (16)
Composition He
Proper motion (right ascension) [mas/yr] 34.62379779 (0.2) 34.09873463 (0.4) 34.624 (0.2) 39.0
Proper motion (declination) [mas/yr] -24.28881228 (0.2) -24.12675041 (0.4) -24.289 (0.2) -25.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.74 (0.02) 18.74 (0.02) 18.70 (0.04) 18.71 18.72 (0.04)
g magnitude 18.79 (0.008) 18.79 (0.008) 18.79 (0.02) 18.79 18.80 (0.02)
r magnitude 19.08 (0.01) 19.08 (0.01) 19.09 (0.03) 19.08 19.10 (0.02)
i magnitude 19.32 (0.02) 19.32 (0.02) 19.28 (0.03) 19.27 19.30 (0.03)
z magnitude 19.67 (0.07) 19.67 (0.07) 19.63 (0.07) 19.62 19.64 (0.07)
G magnitude 18.94 (0.02) 18.98 18.94 18.94 (0.003)
BP magnitude 18.96 (0.02) 18.88
RP magnitude 19.04 (0.03) 18.98
Pan g magnitude 18.85 (0.01)
Pan r magnitude 19.10 (0.008)
Pan i magnitude 19.33 (0.01)
Pan z magnitude 19.54 (0.02)
Pan y magnitude 19.67 (0.1)
E(B-V) 0.019

* 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.