SDSS J084836.99+312038.2

All names: Gaia EDR3 706642727169967872, Gaia DR3 706642727169967872, GALEX J084836.9+312038, SDSS J084836.99+312038.2, Gaia DR2 706642727169967872, SDSS J084836.99+312038.1

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 48 37.03 (0.1) 08 48 36.99 08 48 37.02 (0.2) 08 48 37.03 08 48 36.98 (0.1) 08 48 36.99
Declination 31 20 37.66 (0.08) 31 20 38.17 31 20 37.68 (0.1) 31 20 37.66 31 20 38.31 (0.08) 31 20 38.18
Spectral type DC_HOT DC_HOT DC DC DC_HOT DC
Effective temperature [K] 11249.0 11580.0 12424.0 (372) 11787.0 (276)
log(g) [cgs] 8.28 8.25 8.41 (0.04) 9.78 (0.2)
Mass [M] 0.781 0.741 0.85 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.6784 0.6237
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 6.59 (0.2) 6.28 (0.3) 6.59 6.59 (0.2)
Distance [pc] 151.72 (4) 159.23 (7) 151.72 151.72 (4)
Composition
Proper motion (right ascension) [mas/yr] 33.39527053 (0.1) 33.21910944 (0.4) 33.395 (0.1)
Proper motion (declination) [mas/yr] -40.16974847 (0.1) -39.7259318 (0.2) -40.17 (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 18.20 (0.01) 18.20 (0.01) 18.20 (0.03)
g magnitude 18.16 (0.006) 18.16 (0.006) 18.17 (0.02)
r magnitude 18.37 (0.008) 18.37 (0.008) 18.38 (0.01)
i magnitude 18.56 (0.01) 18.56 (0.01) 18.57 (0.03)
z magnitude 18.69 (0.04) 18.69 (0.04) 18.69 (0.04)
G magnitude 18.25 (0.01) 18.29 18.25 18.25 (0.003)
BP magnitude 18.24 (0.01) 18.23
RP magnitude 18.29 (0.02) 18.23
Pan g magnitude 18.21 (0.01)
Pan r magnitude 18.38 (0.004)
Pan i magnitude 18.59 (0.007)
Pan z magnitude 18.76 (0.01)
Pan y magnitude 18.86 (0.02)
E(B-V) 0.006

* 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.