SDSS J225707.72-085259.8

All names: SDSS J225707.72-085259.8, GALEX J225707.7-085259, Gaia DR2 2606979590291411840, Gaia EDR3 2606979590291411840, Gaia DR3 2606979590291411840

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 57 07.74 (0.4) 22 57 07.72 22 57 07.74 (0.6) 22 57 07.72 (0.4) 22 57 07.72
Declination -08 53 00.83 (0.4) -08 52 59.84 -08 53 00.80 (0.6) -08 52 59.71 (0.4) -08 52 59.81
Spectral type DA DA DA DA
Effective temperature [K] 8099.0 7584.0 (81)
log(g) [cgs] 8.19 7.57 (0.2)
Mass [M] 0.715 0.407 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 1.4050
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] 4.83 (0.5) 4.80 (0.9) 4.83 (0.5)
Distance [pc] 207.06 (21) 208.45 (39) 207.06 (21)
Composition H
Proper motion (right ascension) [mas/yr] 21.65596271 (0.5) 20.727299 (1) 21.656 (0.5)
Proper motion (declination) [mas/yr] -70.02316709 (0.5) -72.3409132 (1) -70.023 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.47 (0.07) 20.47 (0.07) 20.54 (0.07)
g magnitude 19.90 (0.02) 19.90 (0.02) 19.89 (0.03)
r magnitude 19.82 (0.02) 19.82 (0.02) 19.84 (0.03)
i magnitude 19.83 (0.03) 19.83 (0.03) 19.84 (0.04)
z magnitude 19.86 (0.1) 19.86 (0.1) 19.90 (0.1)
G magnitude 19.80 (0.09) 19.84 19.80 (0.006)
BP magnitude 19.81 (0.09) 19.89
RP magnitude 19.31 (0.07) 19.10
Pan g magnitude 19.90 (0.03)
Pan r magnitude 19.83 (0.01)
Pan i magnitude 19.81 (0.02)
Pan z magnitude 20.08 (0.04)
Pan y magnitude 19.63 (0.1)
E(B-V) 0.034

* 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.