SDSS J212422.46+063853.3

All names: SDSS J212422.45+063853.3, SDSS J212422.46+063853.39, SDSS J212422.46+063853.4, WDJ212422.46+063853.86, J2124+0638, Gaia DR3 1738863620555712512, Gaia DR2 1738863620555712512, SDSS J212422.46+063853.3, Gaia EDR3 1738863620555712512, SDSS J212422.45+063853.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 21 24 22.45 (0.2) 21 24 22.46 21 24 22.45 (0.2) 21 24 22.45 21 24 22.46 (0.2) 21 24 22.45
Declination 06 38 53.03 (0.2) 06 38 53.40 06 38 53.06 (0.2) 06 38 53.03 06 38 53.86 (0.2) 06 38 53.06
Spectral type DC DC DC DC DC DC DC DC
Effective temperature [K] 6043.0 (40) 6048.0 (43) 6514.0 6269.0 10527.0 (1000) 5867.0 (195)
log(g) [cgs] 8.07 (0.02) 8.09 (0.02) 8.34 8.22 9.00 (0.5) 8.12 (0.04)
Mass [M] 0.617 (0.02) 0.63 (0.02) 0.807 0.714 0.648 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 3.1300 3.7200 3.6130
log(H/He) -3.0 -3.0
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] 12.93 (0.2) 13.08 (0.3) 13.08 (0.3) 12.93 12.93 (0.2) 13.08 (0.3)
Distance [pc] 77.34 (1) 76.45 (2) 76.43 (2) 77.34 77.34 (1) 76.43 (2)
Composition He
Proper motion (right ascension) [mas/yr] -8.252207437 (0.2) -8.149011842 (0.4) -8.252 (0.2) -8.149011842
Proper motion (declination) [mas/yr] -51.56774196 (0.2) -51.52641753 (0.4) -51.568 (0.2) -51.52641753
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.94 (0.04)
H magnitude
K magnitude
u magnitude 19.58 (0.04) 19.54 (0.03) 19.58 (0.04) 19.58 (0.04) 19.54 (0.03)
g magnitude 18.87 (0.009) 18.87 (0.01) 18.87 (0.009) 18.86 (0.009)
r magnitude 18.57 (0.009) 18.57 (0.01) 18.57 (0.009) 18.60 (0.009)
i magnitude 18.54 (0.01) 18.54 (0.01) 18.54 (0.01) 18.51 (0.01)
z magnitude 18.56 (0.03) 18.56 (0.03) 18.56 (0.03) 18.53 (0.04)
G magnitude 18.60 (0.02) 18.62 18.60 18.60 (0.003) 18.62
BP magnitude 18.81 (0.02) 18.85 18.85
RP magnitude 18.24 (0.02) 18.27 18.27
Pan g magnitude 18.86 (0.006) 18.86 (0.006)
Pan r magnitude 18.61 (0.005) 18.61 (0.005)
Pan i magnitude 18.55 (0.003) 18.55 (0.003)
Pan z magnitude 18.58 (0.01) 18.58 (0.01)
Pan y magnitude 18.58 (0.02) 18.58 (0.02)
E(B-V) 0.004

* 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.