2MASS J08221922+2023264

All names: Gaia DR3 664021842547278592, SDSS J082219.23+202325.7, 2MASS J08221922+2023264, SDSS J082219.23+202325.8, GALEX J082219.2+202326, HS 0819+2033, 08223+2023, PSO J125.5802+20.3901, J0822+2023, TIC 14544042, Gaia EDR3 664021842547278592, PM J08223+2023, WDJ082219.23+202326.25, Gaia DR2 664021842547278592, SDSS J082219.24+202325.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Caron et al. 2023 Blouin et al. 2019 MWDD H MWDD HE Gaia DR2 Stilism Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 08 22 19.26 (0.05) 08 22 19.24 08 22 19.26 (0.09) 08 22 19.26 08 22 19.23 (0.05) 08 22 19.26
Declination 20 23 24.42 (0.03) 20 23 25.77 20 23 24.48 (0.04) 20 23 24.42 20 23 26.25 (0.03) 20 23 24.48
Spectral type DC DC DC DC DC DC DC DC DC
Effective temperature [K] 7038.0 (23) 7005.0 (19) 7050.0 (215) 7514.0 7249.0 7240.0 (150) 6898.0 (43)
log(g) [cgs] 7.55 (0.007) 7.56 (0.008) 7.64 (0.1) 7.84 7.73 8.00 (0) 7.52 (0.01)
Mass [M] 0.344 (0.004) 0.349 (0.005) 0.386 (0.05) 0.503 0.427 0.58 (0.1) 0.331 (0.007)
log(Luminosity) [L] -3.41
Cooling age [Gyr] 0.9400 0.9930 (0.06) 1.0150 1.0140
log(H/He) -3.4 -3.4
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 23.06 (0.06) 23.30 (0.1) 23.30 (0.1) 23.30 (0.1) 23.06 23.06 (0.06) 23.30 (0.1)
Distance [pc] 43.36 (0.1) 42.92 (0.2) 42.92 (0.2) 42.92 (0.2) 35.60 (4) 43.36 43.36 (0.1) 42.92 (0.2)
Composition He He He
Proper motion (right ascension) [mas/yr] 33.89960352 (0.06) 33.92532392 (0.2) 33.9 (0.06) 33.92532392
Proper motion (declination) [mas/yr] -113.9712841 (0.04) -114.1617366 (0.1) -113.971 (0.04) -114.1617366
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 15.66 (0.008) 15.62 (0.06) 15.62 15.62 (0.06)
H magnitude 15.48 (0.1) 15.48 (0.1) 15.48 15.48 (0.1)
K magnitude 15.38 (0.1) 15.38 (0.1) 15.39 15.38 (0.1)
u magnitude 16.73 (0.007) 16.75 (0.007) 16.73 16.73 (0.007) 16.73 (0.007)
g magnitude 16.25 (0.004) 16.27 16.27 (0.003) 16.25 (0.004)
r magnitude 16.13 (0.004) 16.14 16.15 (0.003) 16.13 (0.004)
i magnitude 16.13 (0.005) 16.14 16.16 (0.002) 16.13 (0.005)
z magnitude 16.22 (0.007) 16.20 16.22 (0.003) 16.22 (0.007)
G magnitude 16.11 (0.004) 16.13 16.11 16.11 (0.003) 16.13
BP magnitude 16.27 (0.004) 16.26 16.26
RP magnitude 15.83 (0.003) 15.83 15.83
Pan g magnitude 16.27 (0.003) 16.27 (0.003) 16.27 (0.003)
Pan r magnitude 16.15 (0.003) 16.15 (0.003) 16.14 (0.003)
Pan i magnitude 16.16 (0.002) 16.16 (0.002) 16.16 (0.002)
Pan z magnitude 16.22 (0.003) 16.22 (0.003) 16.22 (0.003)
Pan y magnitude 16.29 (0.005) 16.29 (0.005) 16.29 (0.005)
E(B-V) 0.001

* 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.