GALEX 2657838467059289126

All names: SDSS J144230.11+083147.2, SDSS J144230.11+083147.20, Gaia DR2 1174319379568640768, GALEX 2657838467059289126, Gaia DR3 1174319379568640768, Gaia EDR3 1174319379568640768, SDSS J144230.10+083147.1, USNO-A2.0 0975-07563585

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 14 42 30.11 (0.3) 14 42 30.10 14 42 30.11 (0.3) 14 42 30.11 (0.3) 14 42 30.11
Declination 08 31 46.91 (0.2) 08 31 47.15 08 31 46.92 (0.3) 08 31 47.22 (0.3) 08 31 47.17
Spectral type DBAH: DBAH DBAH: DB
Effective temperature [K] 16902.0 13075.0 16880.0 (141) 16964.0 (183)
log(g) [cgs] 8.10 7.45 7.96 (0.09) 8.08 (0.1)
Mass [M] 0.651 0.329
log(Luminosity) [L]
Cooling age [Gyr] 0.1628
log(H/He) -5.554 <-4.86
log(C/He)
log(Ca/He) <-6.09
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] 2.75 (0.3) 2.46 (0.4) 2.46 (0.4)
Distance [pc] 363.47 (38) 405.84 (65) 378.00 405.84 (65)
Composition He
Proper motion (right ascension) [mas/yr] -0.000462762 (0.3) 0.07069221 (0.6) 0.071 (0.6)
Proper motion (declination) [mas/yr] -19.3113045 (0.3) -19.28032815 (0.6) -19.28 (0.6)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.80 (0.3)
V magnitude
R magnitude 18.60 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.75 (0.02) 18.75 (0.02) 18.74 (0.02)
g magnitude 18.73 (0.008) 18.73 (0.008) 18.75 (0.02)
r magnitude 19.01 (0.01) 19.01 (0.01) 19.02 (0.02)
i magnitude 19.22 (0.02) 19.22 (0.01) 19.23 (0.02)
z magnitude 19.44 (0.06) 19.44 (0.06) 19.43 (0.06)
G magnitude 18.88 (0.03) 18.91 18.91 (0.005)
BP magnitude 18.85 (0.03) 18.81
RP magnitude 18.91 (0.04) 18.89
Pan g magnitude 18.78 (0.01)
Pan r magnitude 19.03 (0.01)
Pan i magnitude 19.26 (0.01)
Pan z magnitude 19.45 (0.02)
Pan y magnitude 19.54 (0.02)
E(B-V) 0.024

* 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.