SDSS J084936.81+224755.0

All names: Gaia DR2 689117813197151488, SDSS J084936.81+224755.0, GALEX J084936.8+224755, Gaia DR3 689117813197151488, Gaia EDR3 689117813197151488, SDSS J084936.81+224754.9

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 49 36.81 (0.5) 08 49 36.81 08 49 36.81 (0.6) 08 49 36.82 (0.5) 08 49 36.81
Declination 22 47 54.94 (0.3) 22 47 54.96 22 47 54.94 (0.4) 22 47 54.97 (0.3) 22 47 54.97
Spectral type DA DAH DAH DAH DA
Effective temperature [K] 18621.8 (932) 16657.0 18694.0 (659)
log(g) [cgs] 8.21 (0.2) 8.13 8.07 (0.1)
Mass [M] 0.7480983344058351 (0.4) 0.697
log(Luminosity) [L]
Cooling age [Gyr] 0.1780
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] 1.53 (0.6) 1.94 (0.7) 1.53 (0.6)
Distance [pc] 652.26 (236) 514.45 (183) 652.27 (236)
Composition H
Proper motion (right ascension) [mas/yr] -5.114868229 (0.7) -7.157897934 (1) -5.115 (0.7)
Proper motion (declination) [mas/yr] -1.969778388 (0.6) -0.965125725 (1) -1.97 (0.6)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.85 (0.04) 19.85 (0.04) 19.75 (0.04)
g magnitude 19.71 (0.01) 19.71 (0.01) 19.72 (0.02)
r magnitude 20.01 (0.02) 20.01 (0.02) 20.00 (0.02)
i magnitude 20.40 (0.04) 20.40 (0.04) 20.40 (0.04)
z magnitude 20.52 (0.2) 20.52 (0.2) 20.52 (0.2)
G magnitude 19.89 (0.05) 19.94 19.89 (0.005)
BP magnitude 19.73 (0.05) 19.65
RP magnitude 20.08 (0.1) 20.00
Pan g magnitude 19.74 (0.007)
Pan r magnitude 20.06 (0.01)
Pan i magnitude 20.32 (0.009)
Pan z magnitude 20.60 (0.03)
Pan y magnitude 19.66 (0.2)
E(B-V) 0.028

* 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.