SDSS J082817.61+181752.6

All names: Gaia EDR3 662256984649238144, Gaia DR3 662256984649238144, SDSS J082817.60+181752.6, Gaia DR2 662256984649238144, SDSS J082817.61+181752.6, GALEX J082817.6+181753

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 28 17.61 (0.3) 08 28 17.61 08 28 17.61 (0.4) 08 28 17.62 (0.3) 08 28 17.61
Declination 18 17 52.51 (0.2) 18 17 52.65 18 17 52.52 (0.2) 18 17 52.66 (0.2) 18 17 52.64
Spectral type DA DAH DAH DAH DA
Effective temperature [K] 13359.6 (378) 12188.0 13673.0 (412)
log(g) [cgs] 7.68 (0.2) 7.53 8.09 (0.09)
Mass [M] 0.4447223055368653 (0.2) 0.375
log(Luminosity) [L]
Cooling age [Gyr] 0.2035
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] 2.43 (0.4) 2.06 (0.6) 2.43 (0.4)
Distance [pc] 411.79 (60) 485.01 (133) 411.79 (60)
Composition H
Proper motion (right ascension) [mas/yr] -9.309271686 (0.4) -9.028896126 (0.9) -9.309 (0.4)
Proper motion (declination) [mas/yr] -9.433424095 (0.2) -9.545004168 (0.5) -9.433 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.92 (0.03) 19.92 (0.03) 19.92 (0.03)
g magnitude 19.51 (0.01) 19.52 (0.01) 19.53 (0.02)
r magnitude 19.67 (0.02) 19.67 (0.01) 19.66 (0.02)
i magnitude 19.93 (0.02) 19.93 (0.02) 19.94 (0.03)
z magnitude 20.06 (0.09) 20.06 (0.09) 20.12 (0.09)
G magnitude 19.62 (0.04) 19.67 19.62 (0.004)
BP magnitude 19.59 (0.04) 19.46
RP magnitude 19.66 (0.07) 19.50
Pan g magnitude 19.51 (0.01)
Pan r magnitude 19.72 (0.01)
Pan i magnitude 19.96 (0.01)
Pan z magnitude 20.18 (0.03)
Pan y magnitude
E(B-V) 0.028

* 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.