SDSS J162130.18+232522.8

All names: GALEX J162130.2+232522, SDSS J162130.18+232522.8, Gaia EDR3 1301788300901987072, Gaia DR3 1301788300901987072, SDSS J162130.17+232522.8, SDSS J162130.18+232522.87, SDSS J162130.17+232522.9, Gaia DR2 1301788300901987072

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 16 21 30.17 (0.2) 16 21 30.18 16 21 30.17 (0.3) 16 21 30.17 (0.2)
Declination 23 25 22.87 (0.3) 23 25 22.94 23 25 22.87 (0.3) 23 25 22.96 (0.3)
Spectral type DA DA DA DA DA
Effective temperature [K] 34348.0 (768) 18400.0 37294.0 (697)
log(g) [cgs] 7.82 (0.1) 7.45 8.12 (0.09)
Mass [M] 0.57 (0.06) 0.371 0.7120000000000001 (0.05)
log(Luminosity) [L] -0.53 (0.1)
Cooling age [Gyr] 0.0058 (0.0005) 0.0452
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 1.28 (0.3) 1.29 (0.4) 1.28 (0.3)
Distance [pc] 783.98 (199) 776.73 (253) 784.01 (199)
Composition H H
Proper motion (right ascension) [mas/yr] -1.099374497 (0.2) -0.196793697 (0.5) -1.099 (0.2)
Proper motion (declination) [mas/yr] -6.062706792 (0.3) -6.932832734 (0.6) -6.063 (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 19.07 (0.02) 19.06 (0.02) 19.07 (0.02)
g magnitude 19.34 (0.01) 19.37 (0.02) 19.34 (0.01)
r magnitude 19.74 (0.02) 19.76 (0.02) 19.74 (0.01)
i magnitude 20.03 (0.03) 20.07 (0.03) 20.03 (0.03)
z magnitude 20.08 (0.1) 20.09 (0.1) 20.08 (0.1)
G magnitude 19.57 (0.03) 19.62 19.57 (0.004)
BP magnitude 19.49 (0.03) 19.40
RP magnitude 19.78 (0.06) 19.70
Pan g magnitude 19.41 (0.02)
Pan r magnitude 19.78 (0.01)
Pan i magnitude 20.08 (0.01)
Pan z magnitude 20.23 (0.06)
Pan y magnitude 20.01 (0.2)
E(B-V) 0.056

* 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.