SDSS J220846.73+201829.6

All names: Gaia EDR3 1781242165944532992, SDSS J220846.73+201829.6, SDSS J220846.73+201829.5, GALEX J220846.6+201830, Gaia DR2 1781242165944532992, Gaia DR3 1781242165944532992, SDSS J220846.72+201829.6

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 22 08 46.73 (0.8) 22 08 46.73 22 08 46.73 (2) 22 08 46.73 (0.8) 22 08 46.73
Declination 20 18 29.49 (0.7) 20 18 29.54 20 18 29.50 (0.9) 20 18 29.65 (0.7) 20 18 29.64
Spectral type DA DA DA DA
Effective temperature [K] 13858.0 12242.0 (678)
log(g) [cgs] 7.44 8.06 (0.2)
Mass [M] 0.349 0.639 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.1269
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] 0.97 (1) 1.29 (2) 0.97 (1)
Distance [pc] 1029.28 (1008) 775.63 (967) 1029.23 (1008)
Composition H
Proper motion (right ascension) [mas/yr] -0.179134321 (0.9) -1.130137631 (2) -0.179 (0.9)
Proper motion (declination) [mas/yr] -9.505393026 (0.8) -11.55553324 (2) -9.505 (0.8)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.75 (0.08) 20.76 (0.09) 20.63 (0.09)
g magnitude 20.25 (0.02) 20.25 (0.02) 20.29 (0.03)
r magnitude 20.41 (0.03) 20.41 (0.03) 20.56 (0.04)
i magnitude 20.61 (0.05) 20.61 (0.06) 20.72 (0.08)
z magnitude 20.89 (0.3) 20.88 (0.2) 20.88 (0.2)
G magnitude 20.38 (0.1) 20.49 20.38 (0.01)
BP magnitude 20.49 (0.1) 20.28
RP magnitude 20.12 (0.2) 20.53
Pan g magnitude 20.31 (0.03)
Pan r magnitude 20.44 (0.02)
Pan i magnitude 20.78 (0.02)
Pan z magnitude 20.81 (0.07)
Pan y magnitude
E(B-V) 0.048

* 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.