USNO-B1.0 1083-00178674

All names: Gaia DR2 669024203839693056, SDSS J080508.79+182058.0, WDJ080508.77+182058.97, SDSS J080508.80+182058.0, USNO-B1.0 1083-00178674, Gaia DR3 669024203839693056, SDSS J080508.79+182057.9, LSPM J0805+1821, SDSS J080508.81+182057.3, J0805+1820, SDSS J080508.81+182057.2, Gaia EDR3 669024203839693056

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 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 05 08.87 (0.1) 08 05 08.81 08 05 08.87 (0.2) 08 05 08.87 08 05 08.77 (0.1) 08 05 08.87 08 05 08.80
Declination 18 20 54.95 (0.09) 18 20 57.25 18 20 55.07 (0.1) 18 20 54.95 18 20 58.97 (0.09) 18 20 55.07 18 20 58.03
Spectral type DA DA DA DA DA DA DA DA
Effective temperature [K] 6644.0 (56) 6751.0 (57) 6644.0 (56) 6527.0 6676.0 (132) 6673.0 (49)
log(g) [cgs] 8.09 (0.02) 8.12 (0.02) 8.08 (0.03) 8.04 8.10 (0.04) 8.07 (0.09)
Mass [M☉] 0.644 (0.02) 0.668 (0.02) 0.638 (0.02) 0.613 0.652 (0.03) 0.632 (0.06)
log(Luminosity) [L☉]
Cooling age [Gyr] 2.1000 1.9400
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] 12.42 (0.2) 12.34 (0.2) 12.34 (0.2) 12.42 12.42 (0.2) 12.34 (0.2)
Distance [pc] 80.50 (1) 81.04 (2) 81.01 (2) 80.50 80.50 (1) 81.01 (2)
Composition H H H
Proper motion (right ascension) [mas/yr] 93.54760129 (0.2) 93.74378351 (0.4) 93.548 (0.2) 93.74378351
Proper motion (declination) [mas/yr] -251.5743669 (0.1) -251.5288153 (0.2) -251.574 (0.1) -251.5288153
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.50
V magnitude
R magnitude 17.70
I magnitude
J magnitude 17.54 (0.02)
H magnitude 17.40 (0.04)
K magnitude 17.46 (0.08)
u magnitude 19.14 (0.02) 19.12 (0.02) 19.14 (0.02) 19.15 (0.03) 19.15 (0.03)
g magnitude 18.52 (0.008) 18.52 (0.008) 18.49 (0.008) 18.54 (0.02)
r magnitude 18.28 (0.008) 18.28 (0.008) 18.27 (0.008) 18.29 (0.02)
i magnitude 18.24 (0.009) 18.24 (0.009) 18.20 (0.009) 18.22 (0.02)
z magnitude 18.23 (0.02) 18.23 (0.02) 18.23 (0.03) 18.23 (0.02)
G magnitude 18.27 (0.03) 18.29 18.27 18.27 (0.003) 18.29
BP magnitude 18.47 (0.03) 18.49 18.49
RP magnitude 17.91 (0.02) 17.89 17.89
Pan g magnitude 18.53 (0.01) 18.53 (0.02)
Pan r magnitude 18.29 (0.006) 18.29 (0.007)
Pan i magnitude 18.23 (0.003) 18.23 (0.003)
Pan z magnitude 18.25 (0.02) 18.25 (0.01)
Pan y magnitude 18.27 (0.02) 18.27 (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.