Gaia DR2 680152090443478656

All names: SDSS J080420.94+225017.2, WDJ080420.96+225017.36, Gaia DR2 680152090443478656, SDSS J080420.95+225017.3, SDSS J080420.94+225017.3, Gaia EDR3 680152090443478656, J0804+2250, LAMOST J080421.01+225018.9, Gaia DR3 680152090443478656, GALEX J080420.9+225017

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Kilic et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Guo et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 08 04 20.90 (0.03) 08 04 20.90 08 04 20.90 08 04 20.96 (0.03) 08 04 20.90
Declination 22 50 16.92 (0.02) 22 50 16.93 22 50 16.92 22 50 17.36 (0.02) 22 50 16.93
Spectral type DA DA DA DA DA
Effective temperature [K] 18842.0 (286) 18840.0 (284) 17956.0 19882.0 21705.0 (113) 20226.0 (267)
log(g) [cgs] 8.47 (0.01) 8.47 (0.01) 8.43 8.61 8.51 (0.02) 8.54 (0.01)
Mass [M] 0.91 (0.01) 0.912 (0.01) 0.884 0.982 0.94 (0.01) 0.958 (0.008)
log(Luminosity) [L]
Cooling age [Gyr] 0.2365 0.2542
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] 21.68 (0.04) 21.75 (0.07) 21.68 21.68 (0.04) 21.75 (0.07)
Distance [pc] 46.12 (0.08) 45.98 (0.1) 46.12 46.12 (0.08) 45.98 (0.1)
Composition H
Proper motion (right ascension) [mas/yr] -47.24681439 (0.04) -47.00604633 (0.1) -47.247 (0.04) -47.00604633
Proper motion (declination) [mas/yr] -27.81715031 (0.03) -27.79716386 (0.06) -27.817 (0.03) -27.79716386
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 15.45 (0.003)
H magnitude 15.48 (0.01)
K magnitude 15.55 (0.02)
u magnitude 14.82 (0.003) 14.82 (0.003)
g magnitude 14.78 (0.003) 14.78 (0.003)
r magnitude 15.16 (0.003) 15.16 (0.003)
i magnitude 15.42 (0.003) 15.42 (0.003)
z magnitude 15.78 (0.006) 15.78 (0.006)
G magnitude 14.97 (0.003) 14.99 14.97 14.97 (0.003) 14.99
BP magnitude 14.88 (0.003) 14.84 14.84
RP magnitude 15.11 (0.006) 15.11 15.11
Pan g magnitude 14.84 (0.003)
Pan r magnitude 15.13 (0.004)
Pan i magnitude 15.41 (0.006)
Pan z magnitude 15.71 (0.006)
Pan y magnitude 15.89 (0.01)
E(B-V) 0.001

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.