SDSS J094458.92+453901.2

All names: GALEX J094458.9+453901, SDSS J094458.92+453901.2, WD 0941+458, Gaia EDR3 821247465537145344, Gaia DR2 821247465537145344, SDSS J094458.92+453901.1, Gaia DR3 821247465537145344

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Ferrario et al. 2015 Kulebi et al. 2009 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 44 58.92 (0.3) 09 44 58.93 09 44 58.92 (0.4) 09 44 58.92 09 44 58.93 (0.3) 09 44 58.27 09 44 58.92
Declination 45 39 01.11 (0.3) 45 39 01.17 45 39 01.11 (0.4) 45 39 01.19 45 39 01.21 (0.3) 45 38 58.92 45 39 01.15
Spectral type DAH DA DA DAH DAP DAP3.3 DAH DAH
Effective temperature [K] 16847.8 (404) 18597.0 15500.0 18919.0 (1136)
log(g) [cgs] 8.57 (0.2) 8.70 8.00 (0) 10.00 (0.009)
Mass [M] 0.9749648205779752 (0.3) 1.051
log(Luminosity) [L]
Cooling age [Gyr] 0.3472
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] 3.42 (0.5) 2.65 (0.7) 3.42 (0.5)
Distance [pc] 292.12 (41) 377.46 (106) 292.12 (41)
Composition H H
Proper motion (right ascension) [mas/yr] -5.800929828 (0.4) -6.211232789 (1) -5.801 (0.4)
Proper motion (declination) [mas/yr] -6.639503275 (0.3) -5.473154955 (0.9) -6.64 (0.3)
Variability
Magnetic yes yes yes yes
Bd [MG] 16.372686428055037 15.91 (9) 15.91 (9)
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.02 (0.04) 20.02 (0.04) 20.01 19.99 (0.04)
g magnitude 19.92 (0.01) 19.92 (0.01) 19.95 19.92 (0.02)
r magnitude 20.15 (0.02) 20.15 (0.02) 20.14 20.13 (0.02)
i magnitude 20.36 (0.03) 20.36 (0.03) 20.35 20.35 (0.03)
z magnitude 20.81 (0.2) 20.81 (0.2) 20.74 20.73 (0.2)
G magnitude 20.02 (0.04) 20.07 20.02 (0.005)
BP magnitude 19.96 (0.04) 20.00
RP magnitude 20.09 (0.07) 20.27
Pan g magnitude 19.90 (0.02)
Pan r magnitude 20.16 (0.03)
Pan i magnitude 20.45 (0.02)
Pan z magnitude 20.59 (0.03)
Pan y magnitude
E(B-V) 0.015

* 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.