WD 0801+423

All names: SDSS J080429.38+421312.1, WDJ080429.35+421312.87, SDSS J080429.37+421312.0, Gaia DR2 922686832063591168, KUV 08011+4222, WD 0801+423, Gaia DR3 922686832063591168, Gaia EDR3 922686832063591168, SDSS J080429.35+421312.7, WIRED J080429.35+421312.7, J0804+4213, GALEX J080429.4+421312, SDSS J080429.35+421312.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Caron et al. 2023 Kilic et al. 2020 MWDD H Gaia DR2 Stilism Tremblay et al. 2011 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Kleinman et al. 2004 Vincent et al. 2023
Right ascension 08 04 29.41 (0.05) 08 04 29.38 08 04 29.41 (0.07) 08 04 29.41 08 04 29.35 (0.05) 08 04 29.41 08 04 29.35 08 04 28.99 08 04 29.35 08 04 29.35
Declination 42 13 11.04 (0.04) 42 13 12.07 42 13 11.10 (0.06) 42 13 11.04 42 13 12.86 (0.04) 42 13 11.10 42 13 12.78 42 13 10.56 42 13 12.74 42 13 12.72
Spectral type DA DA DA DA DA DA DA DA DA DA5.4 DA DA
Effective temperature [K] 9129.0 (61) 9067.0 (55) 9129.0 (61) 9056.0 9260.0 (20) 9087.0 (106) 9222.0 (19) 9045.0 (23) 9366.0 (19)
log(g) [cgs] 8.00 (0.01) 7.98 (0.01) 8.00 (0.01) 7.98 8.37 (0.03) 7.98 (0.02) 8.34 (0.03) 8.11 (0.03) 8.46 (0.03)
Mass [M] 0.596 (0.01) 0.586 (0.01) 0.597 (0.01) 0.588 0.84 (0.02) 0.586 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.7900 0.7616 1.3804
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] 13.45 (0.07) 13.48 (0.1) 13.48 (0.1) 13.45 13.45 (0.07) 13.48 (0.1)
Distance [pc] 74.34 (0.4) 74.18 (0.6) 74.20 (0.5) 74.34 74.34 (0.4) 74.20 (0.5)
Composition H H H H
Proper motion (right ascension) [mas/yr] 43.57436936 (0.06) 43.4797132 (0.1) 43.574 (0.06) 43.48 43.9 44.0
Proper motion (declination) [mas/yr] -113.8659942 (0.04) -114.1562045 (0.1) -113.866 (0.04) -114.156 -113.2 -110.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.60
V magnitude
R magnitude
I magnitude
J magnitude 16.57 (0.02)
H magnitude
K magnitude
u magnitude 17.28 (0.01) 17.27 (0.008) 17.27 (0.01) 17.27 (0.009) 17.26 (0.02) 17.27 17.28 (0.02) 17.27 (0.01)
g magnitude 16.86 (0.004) 16.86 (0.004) 16.85 (0.004) 16.87 (0.009) 16.87 16.88 (0.01) 16.87 (0.01)
r magnitude 16.89 (0.005) 16.89 (0.005) 16.88 (0.004) 16.90 (0.009) 16.91 16.90 (0.01) 16.91 (0.01)
i magnitude 16.97 (0.006) 16.97 (0.006) 16.96 (0.005) 16.97 (0.01) 16.98 16.98 (0.01) 16.98 (0.01)
z magnitude 17.14 (0.01) 17.14 (0.01) 17.07 (0.01) 17.09 (0.02) 17.11 17.11 (0.02) 17.11 (0.02)
G magnitude 16.82 (0.005) 16.84 16.82 16.82 (0.003) 16.84
BP magnitude 16.92 (0.005) 16.90 16.90
RP magnitude 16.67 (0.006) 16.67 16.67
Pan g magnitude 16.89 (0.005) 16.89 (0.005)
Pan r magnitude 16.90 (0.002) 16.90 (0.003)
Pan i magnitude 16.99 (0.002) 16.99 (0.003)
Pan z magnitude 17.12 (0.006) 17.12 (0.005)
Pan y magnitude 17.25 (0.02) 17.25 (0.02)
E(B-V) 0.002

* 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.