SDSS J202541.69+140535.8

All names: GALEX J202541.7+140535, SDSS J202541.69+140535.8, Gaia DR2 1804237871821750656, Gaia EDR3 1804237871821750656, SDSS J202541.68+140535.8, Gaia DR3 1804237871821750656

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 20 25 41.72 (0.1) 20 25 41.72 (0.1) 20 25 41.72 20 25 41.68 (0.1) 20 25 41.69
Declination 14 05 35.73 (0.1) 14 05 35.74 (0.1) 14 05 35.73 14 05 35.82 (0.1) 14 05 35.83
Spectral type DA DA DA DA DA
Effective temperature [K] 12285.0 13671.0 (586) 16845.0 (124)
log(g) [cgs] 7.76 8.03 (0.06) 8.02 (0.03)
Mass [M] 0.478 0.626 (0.04) 0.626 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.2571
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] 4.27 (0.2) 3.85 (0.2) 4.27 4.27 (0.2)
Distance [pc] 234.39 (9) 259.78 (14) 234.39 234.38 (9)
Composition H
Proper motion (right ascension) [mas/yr] 37.79718197 (0.2) 38.04231508 (0.3) 37.797 (0.2)
Proper motion (declination) [mas/yr] -5.348174305 (0.1) -5.342790714 (0.3) -5.348 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.64 (0.03) 18.64 (0.03)
g magnitude 18.31 (0.03) 18.31 (0.03)
r magnitude 18.50 (0.03) 18.50 (0.03)
i magnitude 18.73 (0.04) 18.73 (0.04)
z magnitude 19.03 (0.06) 19.03 (0.06)
G magnitude 18.39 (0.01) 18.42 18.39 18.39 (0.003)
BP magnitude 18.39 (0.01) 18.36
RP magnitude 18.50 (0.03) 18.40
Pan g magnitude 18.31 (0.005)
Pan r magnitude 18.53 (0.003)
Pan i magnitude 18.77 (0.004)
Pan z magnitude 18.91 (0.03)
Pan y magnitude 19.15 (0.03)
E(B-V) 0.061

* 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.