Gaia DR2 1878953187324368000

All names: Gaia DR3 1878953187324368000, SDSS J222132.59+244636.3, Gaia EDR3 1878953187324368000, SDSS J222132.58+244636.3, WDJ222132.64+244637.02, WDJ222132.64+244637.03, Gaia DR2 1878953187324368000

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 22 21 32.55 (0.08) 22 21 32.55 22 21 32.55 22 21 32.64 (0.08) 22 21 32.55
Declination 24 46 35.86 (0.1) 24 46 35.90 24 46 35.86 24 46 37.03 (0.1) 24 46 35.90
Spectral type DC DC D
Effective temperature [K] 8726.0 (40) 9262.0 9051.0 9144.0 (190)
log(g) [cgs] 8.02 (0.01) 8.28 8.20 8.14 (0.04)
Mass [M] 0.588 (0.01) 0.775 0.705 0.666 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 1.1130 1.0900
log(H/He) -4.0
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 10.50 (0.1) 10.63 (0.1) 10.50 10.50 (0.1) 10.63 (0.1)
Distance [pc] 95.27 (1) 94.09 (1) 95.27 95.27 (1) 94.09 (1)
Composition
Proper motion (right ascension) [mas/yr] -73.52967508 (0.1) -73.39516076 (0.3) -73.53 (0.1) -73.39516076
Proper motion (declination) [mas/yr] -72.85423927 (0.1) -72.95581901 (0.2) -72.854 (0.1) -72.95581901
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.99 (0.01) 17.99 (0.01)
g magnitude 17.77 (0.005) 17.77 (0.005)
r magnitude 17.82 (0.007) 17.82 (0.007)
i magnitude 17.88 (0.01) 17.88 (0.01)
z magnitude 17.97 (0.04) 17.97 (0.04)
G magnitude 17.71 (0.009) 17.74 17.71 17.71 (0.003) 17.74
BP magnitude 17.77 (0.009) 17.77 17.77
RP magnitude 17.59 (0.01) 17.58 17.58
Pan g magnitude 17.76 (0.004)
Pan r magnitude 17.81 (0.002)
Pan i magnitude 17.90 (0.003)
Pan z magnitude 18.02 (0.001)
Pan y magnitude 18.14 (0.02)
E(B-V) 0.020

* 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.