WD 1446+449

All names: LAMOST J144823.67+444344.3, SDSS J144823.67+444344.3, SDSS J144823.68+444344.4, SDSS J144823.68+444344.0, GALEX J144823.6+444343, SDSS J144823.68+444344.3, Gaia DR2 1490684952605683456, Gaia DR3 1490684952605683456, SDSS J144823.69+444344.0, WIRED J144823.67+444344.3, Gaia EDR3 1490684952605683456, WD 1446+449, CBS 203

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Tremblay et al. 2011 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 48 23.68 (0.05) 14 48 23.68 14 48 23.68 (0.06) 14 48 23.68 14 48 23.68 (0.05) 14 48 23.68 14 48 23.45 14 48 23.68
Declination 44 43 43.98 (0.05) 44 43 44.33 44 43 44.00 (0.06) 44 43 43.98 44 43 44.38 (0.05) 44 43 44.38 44 43 39.72 44 43 44.38
Spectral type DA DA DA DA DA2.6 DA_auto DA DA DA
Effective temperature [K] 13060.0 19300.0 (465) 18830.0 (190) 16668.0 (460) 17936.0 (134) 18188.0 (158)
log(g) [cgs] 6.94 7.48 (0.08) 7.50 (0.04) 7.26 (0.03) 7.43 (0.03) 7.45 (0.03)
Mass [M] 0.226 0.41 (0.03) 0.42 (0.01) 0.308 (0.01) 0.415 (0.008)
log(Luminosity) [L]
Cooling age [Gyr] 0.0832
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 3.41 (0.06) 3.32 (0.08) 3.41 3.41 (0.06)
Distance [pc] 293.21 (5) 300.85 (7) 252.00 293.21 293.20 (5)
Composition H H H
Proper motion (right ascension) [mas/yr] -0.307164483 (0.06) -0.368365718 (0.1) -0.307 (0.06) 4.6
Proper motion (declination) [mas/yr] -24.76542976 (0.06) -24.59696516 (0.1) -24.765 (0.06) -26.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.00
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.44 (0.009) 17.44 (0.009) 17.45 (0.02) 17.44 17.43 (0.02)
g magnitude 17.21 (0.005) 17.21 (0.005) 17.24 (0.02) 17.23 17.28 (0.02)
r magnitude 17.53 (0.006) 17.53 (0.006) 17.55 (0.01) 17.53 (0.01)
i magnitude 17.80 (0.007) 17.80 (0.007) 17.76 (0.02) 17.76 (0.02)
z magnitude 18.06 (0.02) 18.06 (0.02) 18.05 (0.02) 18.05 (0.02)
G magnitude 17.39 (0.006) 17.41 17.39 17.39 (0.003)
BP magnitude 17.37 (0.006) 17.33
RP magnitude 17.53 (0.01) 17.50
Pan g magnitude 17.28 (0.005)
Pan r magnitude 17.53 (0.006)
Pan i magnitude 17.81 (0.003)
Pan z magnitude 18.04 (0.007)
Pan y magnitude 18.15 (0.02)
E(B-V) 0.021

* 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.