SDSS J080440.35+182731.0

All names: Gaia DR2 669216553952163072, SDSS J080440.35+182731.0, Gaia DR3 669216553952163072, Gaia EDR3 669216553952163072, SDSS J080440.35+182730.9, WD 0801+186

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 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 04 40.34 (0.1) 08 04 40.35 08 04 40.34 (0.2) 08 04 40.35 08 04 40.34 08 04 40.36 (0.1) 08 04 39.98 08 04 40.35
Declination 18 27 30.76 (0.1) 18 27 30.91 18 27 30.77 (0.1) 18 27 31.00 18 27 30.76 18 27 31.00 (0.1) 18 27 26.64 18 27 31.03
Spectral type DAH DA DA DAH DQ DAP DAP4.6 DAH hotDQ
Effective temperature [K] 11731.1 (573) 9965.0 11000.0 8570.0 (211) 10135.0 (63)
log(g) [cgs] 8.66 (0.01) 8.49 8.00 (0) 8.11 (0.04) 8.46 (0.4)
Mass [M] 1.0192795381940154 (0.02) 0.914 0.646 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 1.4210
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] 9.32 (0.2) 9.26 (0.2) 9.32 9.32 (0.2)
Distance [pc] 107.29 (2) 107.99 (3) 107.29 107.29 (2)
Composition H H
Proper motion (right ascension) [mas/yr] -10.53497861 (0.2) -10.73022035 (0.4) -10.535 (0.2)
Proper motion (declination) [mas/yr] -14.5111471 (0.1) -14.47262247 (0.2) -14.511 (0.1)
Variability
Magnetic yes yes yes yes
Bd [MG] 72.43566970784252 48.47 (3) 48.47 (3)
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.02 (0.04)
H magnitude 18.12 (0.08)
K magnitude 18.20 (0.2)
u magnitude 18.41 (0.02) 18.41 (0.01) 18.45 18.40 (0.02)
g magnitude 18.10 (0.006) 18.10 (0.006) 18.13 18.11 (0.02)
r magnitude 18.20 (0.008) 18.20 (0.008) 18.25 18.23 (0.02)
i magnitude 18.34 (0.01) 18.34 (0.01) 18.32 18.31 (0.02)
z magnitude 18.45 (0.03) 18.45 (0.03) 18.55 18.53 (0.04)
G magnitude 18.14 (0.02) 18.17 18.14 18.14 (0.003)
BP magnitude 18.22 (0.02) 18.18
RP magnitude 18.02 (0.03) 18.03
Pan g magnitude 18.15 (0.004)
Pan r magnitude 18.20 (0.006)
Pan i magnitude 18.35 (0.002)
Pan z magnitude 18.53 (0.01)
Pan y magnitude 18.60 (0.02)
E(B-V) 0.003

* 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.