SDSS J205029.55+164647.1

All names: Gaia EDR3 1764639677803740672, Gaia DR2 1764639677803740672, SDSS J205029.55+164647.1, Gaia DR3 1764639677803740672, GALEX J205029.4+164647

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 20 50 29.56 (0.8) 20 50 29.55 20 50 29.56 (1) 20 50 29.55 (0.8) 20 50 29.55
Declination 16 46 46.89 (0.5) 16 46 47.12 16 46 46.90 (2) 16 46 47.26 (0.5) 16 46 47.11
Spectral type DA DA DA DA
Effective temperature [K] 24985.0 17254.0 (756)
log(g) [cgs] 9.43 7.90 (0.2)
Mass [M] 1.345 0.567 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.6026
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] 3.60 (1) 3.41 (2) 3.60 (1)
Distance [pc] 277.41 (108) 293.14 (163) 277.42 (108)
Composition H
Proper motion (right ascension) [mas/yr] 4.805402033 (1) 0.962318433 (2) 4.805 (1)
Proper motion (declination) [mas/yr] -23.46395619 (1) -23.419548 (2) -23.464 (1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.48 (0.05) 20.60 (0.05) 20.60 (0.05)
g magnitude 20.37 (0.02) 20.46 (0.02) 20.46 (0.02)
r magnitude 20.70 (0.04) 20.85 (0.04) 20.85 (0.04)
i magnitude 20.90 (0.09) 21.07 (0.09) 21.07 (0.09)
z magnitude 21.37 (0.4) 21.50 (0.4) 21.50 (0.4)
G magnitude 20.60 (0.1) 20.69 20.60 (0.008)
BP magnitude 20.47 (0.1) 20.63
RP magnitude 20.54 (0.1) 20.79
Pan g magnitude 20.47 (0.02)
Pan r magnitude 20.77 (0.01)
Pan i magnitude 21.02 (0.05)
Pan z magnitude 21.03 (0.006)
Pan y magnitude
E(B-V) 0.043

* 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.