SDSS J084848.12+310811.8

All names: GALEX J084848.1+310811, SDSS J084848.12+310811.8, Gaia EDR3 706635064948859264, Gaia DR2 706635064948321024, WD 0845+313, Gaia DR3 706635064948859264

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013
Right ascension 08 48 48.12 (0.3) 08 48 48.12 08 48 48.12 (0.6) 08 48 48.13 (0.3) 08 48 48.13 08 48 47.93 08 48 48.12
Declination 31 08 11.80 (0.2) 31 08 11.82 31 08 11.80 (0.3) 31 08 11.85 (0.2) 31 08 11.85 31 08 03.84 31 08 11.85
Spectral type DA DA DA DA_auto DA DA
Effective temperature [K] 34944.0 (1356) 25505.0 35468.0 (749) 34146.0 (740)
log(g) [cgs] 7.57 (0.2) 6.87 7.58 (0.2) 7.59 (0.2)
Mass [M☉] 0.47 (0.08) 0.272 0.493 (0.06)
log(Luminosity) [L☉] -0.33 (0.2)
Cooling age [Gyr] 0.0039 (0.002)
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] 0.16 (0.4) 0.63 (0.8) 0.16 (0.4)
Distance [pc] 6418.03 (17793) 1579.42 (1919) 6418.49 (17797)
Composition H H
Proper motion (right ascension) [mas/yr] -8.40049671 (0.4) -8.560019943 (0.9) -8.4 (0.4) -5.1
Proper motion (declination) [mas/yr] -3.161113539 (0.3) -3.330399149 (0.6) -3.161 (0.3) -6.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.86 (0.02) 18.89 (0.02) 18.91 (0.02) 18.90 18.88 (0.02)
g magnitude 19.15 (0.01) 19.18 (0.01) 19.19 (0.02) 19.19 19.17 (0.02)
r magnitude 19.57 (0.02) 19.59 (0.02) 19.64 (0.02) 19.63 19.62 (0.02)
i magnitude 19.91 (0.03) 19.90 (0.03) 19.95 (0.03) 19.94 19.95 (0.03)
z magnitude 20.28 (0.1) 20.30 (0.1) 20.31 (0.1) 20.30 20.30 (0.1)
G magnitude 19.44 (0.03) 19.47 19.44 (0.004)
BP magnitude 19.35 (0.03) 19.27
RP magnitude 19.65 (0.07) 19.57
Pan g magnitude 19.25 (0.01)
Pan r magnitude 19.64 (0.01)
Pan i magnitude 20.02 (0.06)
Pan z magnitude 20.31 (0.04)
Pan y magnitude 20.23 (0.2)
E(B-V) 0.024

* 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.