Gaia DR2 691608584991130752

All names: SDSS J085623.58+254008.5, Gaia DR3 691608584991130752, SDSS J085623.57+254008.4, WDJ085623.58+254008.72, Gaia DR2 691608584991130752, Gaia EDR3 691608584991130752

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 08 56 23.56 (0.2) 08 56 23.56 08 56 23.56 08 56 23.58 (0.2) 08 56 23.56
Declination 25 40 07.83 (0.1) 25 40 07.86 25 40 07.83 25 40 08.72 (0.1) 25 40 07.86
Spectral type DC: DC
Effective temperature [K] 4934.0 4613.0 5015.0 (68)
log(g) [cgs] 7.91 7.68 7.97 (0.04)
Mass [M] 0.528 0.396 0.561 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 4.9670 3.7450
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 18.25 (0.3) 18.01 (0.4) 18.25 18.25 (0.3) 18.01 (0.4)
Distance [pc] 54.79 (0.8) 55.52 (1) 54.79 54.79 (0.8) 55.52 (1)
Composition
Proper motion (right ascension) [mas/yr] -17.53694728 (0.2) -18.23917836 (0.5) -17.537 (0.2) -18.23917836
Proper motion (declination) [mas/yr] -55.4383694 (0.2) -55.49682789 (0.4) -55.438 (0.2) -55.49682789
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.80 (0.08) 20.80 (0.08)
g magnitude 19.25 (0.01) 19.25 (0.01)
r magnitude 18.50 (0.009) 18.50 (0.009)
i magnitude 18.23 (0.009) 18.23 (0.009)
z magnitude 18.09 (0.02) 18.09 (0.02)
G magnitude 18.54 (0.03) 18.56 18.54 18.54 (0.003) 18.56
BP magnitude 19.03 (0.03) 18.99 18.99
RP magnitude 17.89 (0.02) 17.86 17.86
Pan g magnitude 19.14 (0.006)
Pan r magnitude 18.51 (0.005)
Pan i magnitude 18.23 (0.007)
Pan z magnitude 18.15 (0.004)
Pan y magnitude 18.11 (0.01)
E(B-V) 0.002

* 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.