SDSS J210742.30+102611.6

All names: Gaia DR2 1744882622083003648, SDSS J210742.30+102611.70, GALEX J210742.3+102612, Gaia DR3 1744882622083003648, WD 2105+102, SDSS J210742.30+102611.7, Gaia EDR3 1744882622083003648, SDSS J210742.30+102611.6

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 21 07 42.30 (0.1) 21 07 42.30 21 07 42.30 (0.2) 21 07 42.30 21 07 42.30 (0.1) 21 07 42.30 21 07 42.41 21 07 42.30
Declination 10 26 10.88 (0.09) 10 26 11.67 10 26 10.91 (0.1) 10 26 10.88 10 26 11.71 (0.09) 10 26 11.67 10 26 08.52 10 26 11.66
Spectral type DB DB DB DB DB DB DB
Effective temperature [K] 14053.0 12473.0 11303.0 13439.0 (101) 11770.0 (366) 15427.0 (109) 14306.0 (215)
log(g) [cgs] 8.36 8.02 7.89 8.00 (0) 7.97 (0.06) 8.99 (0.02) 8.68 (0.1)
Mass [M] 0.816 0.596 0.519 0.568 (0.05) 1.015 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.3863
log(H/He) -5.763 <-5.38
log(C/He)
log(Ca/He) <-8.75
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] 4.46 (0.2) 4.39 (0.2) 4.46 4.46 (0.2)
Distance [pc] 224.43 (9) 227.81 (12) 242.00 224.43 224.44 (9)
Composition He
Proper motion (right ascension) [mas/yr] -4.774592721 (0.2) -4.607510082 (0.4) -4.775 (0.2) 4.4
Proper motion (declination) [mas/yr] -51.74912414 (0.1) -51.5544055 (0.4) -51.749 (0.1) -58.8
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.50 (0.02) 18.50 (0.02) 18.52 (0.02) 18.52 18.51 (0.02)
g magnitude 18.48 (0.008) 18.48 (0.008) 18.50 (0.01) 18.50 18.49 (0.01)
r magnitude 18.68 (0.01) 18.68 (0.01) 18.70 (0.01) 18.70 18.68 (0.01)
i magnitude 18.86 (0.01) 18.86 (0.01) 18.89 (0.01) 18.89 18.86 (0.02)
z magnitude 19.02 (0.06) 19.02 (0.06) 19.04 (0.06) 19.05 19.02 (0.06)
G magnitude 18.57 (0.02) 18.61 18.57 18.57 (0.003)
BP magnitude 18.60 (0.02) 18.55
RP magnitude 18.59 (0.03) 18.58
Pan g magnitude 18.53 (0.005)
Pan r magnitude 18.69 (0.006)
Pan i magnitude 18.88 (0.006)
Pan z magnitude 19.05 (0.01)
Pan y magnitude 19.12 (0.06)
E(B-V) 0.035

* 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.