SDSS J082109.53+532208.5

All names: Gaia EDR3 1031962546808405248, Gaia DR2 1031962546808405248, Gaia DR3 1031962546808405248, SDSS J082109.53+532208.57, SDSS J082109.53+532208.5

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 08 21 09.52 (0.3) 08 21 09.53 08 21 09.52 (0.3) 08 21 09.53 (0.3)
Declination 53 22 08.53 (0.2) 53 22 08.57 53 22 08.54 (0.3) 53 22 08.54 (0.2)
Spectral type DC: DC: DC: DC DC:
Effective temperature [K] 8118.0 7890.0 9362.0 (159)
log(g) [cgs] 8.16 8.08 8.00 (0)
Mass [M☉] 0.695 0.628
log(Luminosity) [L☉]
Cooling age [Gyr] 1.3210 1.2820
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 5.15 (0.3) 5.33 (0.5) 5.15 (0.3)
Distance [pc] 194.05 (13) 187.57 (16) 194.05 (13)
Composition
Proper motion (right ascension) [mas/yr] -8.42794482 (0.3) -7.804423912 (0.7) -8.428 (0.3)
Proper motion (declination) [mas/yr] -0.505999356 (0.3) -0.695782907 (0.6) -0.506 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.80 (0.04) 19.81 (0.04) 19.80 (0.04)
g magnitude 19.51 (0.01) 19.53 (0.02) 19.52 (0.01)
r magnitude 19.55 (0.02) 19.57 (0.02) 19.55 (0.02)
i magnitude 19.53 (0.02) 19.56 (0.03) 19.53 (0.02)
z magnitude 19.65 (0.08) 19.62 (0.08) 19.64 (0.08)
G magnitude 19.51 (0.03) 19.56 19.51 (0.004)
BP magnitude 19.57 (0.03) 19.52
RP magnitude 19.34 (0.07) 19.32
Pan g magnitude 19.55 (0.01)
Pan r magnitude 19.55 (0.01)
Pan i magnitude 19.69 (0.007)
Pan z magnitude 19.66 (0.04)
Pan y magnitude 19.67 (0.02)
E(B-V) 0.011

* 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.