SDSS J221513.63+230059.7

All names: SDSS J221513.63+230059.7, SDSS J221513.63+230059.8, Gaia DR3 1878306816221800576, Gaia DR2 1878306816221800576, GALEX J221513.6+230100, SDSS J221513.63+230059.79, Gaia EDR3 1878306816221800576, SDSS J221513.63+230059.9

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 22 15 13.63 (0.3) 22 15 13.64 22 15 13.63 (0.5) 22 15 13.65 (0.3)
Declination 23 00 59.76 (0.3) 23 00 59.97 23 00 59.77 (0.6) 23 01 00.10 (0.3)
Spectral type DB DB DB DB
Effective temperature [K] 15383.0 14930.0 12880.0 15522.0 (108)
log(g) [cgs] 8.07 7.94 7.77 7.87 (0.08)
Mass [M] 0.633 0.556 0.464
log(Luminosity) [L]
Cooling age [Gyr] 0.2303
log(H/He) -5.571
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] 2.76 (0.3) 2.60 (0.5) 2.76 (0.3)
Distance [pc] 362.93 (45) 384.66 (81) 362.92 (45)
Composition He
Proper motion (right ascension) [mas/yr] -17.81506332 (0.3) -18.89627575 (1) -17.815 (0.3)
Proper motion (declination) [mas/yr] -21.44038985 (0.3) -22.01708071 (1) -21.44 (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 19.06 (0.02) 19.07 (0.03) 19.07 (0.02)
g magnitude 19.13 (0.009) 19.13 (0.02) 19.12 (0.009)
r magnitude 19.32 (0.01) 19.31 (0.02) 19.31 (0.01)
i magnitude 19.59 (0.02) 19.56 (0.03) 19.58 (0.03)
z magnitude 19.99 (0.1) 19.98 (0.1) 19.97 (0.1)
G magnitude 19.22 (0.07) 19.26 19.22 (0.005)
BP magnitude 19.21 (0.07) 19.03
RP magnitude 19.33 (0.06) 19.29
Pan g magnitude 19.16 (0.009)
Pan r magnitude 19.38 (0.006)
Pan i magnitude 19.62 (0.02)
Pan z magnitude 19.74 (0.04)
Pan y magnitude 19.92 (0.06)
E(B-V) 0.044

* 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.