SDSS J081602.80+204452.9

All names: Gaia EDR3 675772490815045888, GALEX J081602.7+204452, Gaia DR2 675772490815045888, Gaia DR3 675772490815045888, SDSS J081602.80+204452.9, SDSS J081602.80+204452.98, SDSS J081602.80+204453.0

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 08 16 02.81 (0.2) 08 16 02.80 08 16 02.81 (0.3) 08 16 02.80 (0.2)
Declination 20 44 53.03 (0.1) 20 44 53.02 20 44 53.03 (0.2) 20 44 53.05 (0.1)
Spectral type DA DA DA DA
Effective temperature [K] 21220.0 26658.0 (147)
log(g) [cgs] 7.66 8.03 (0.03)
Mass [M] 0.457 0.6509999999999999 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.0312
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] 2.02 (0.2) 1.95 (0.4) 2.02 (0.2)
Distance [pc] 495.61 (54) 512.57 (105) 495.61 (54)
Composition H
Proper motion (right ascension) [mas/yr] 6.39836927 (0.2) 6.796439235 (0.6) 6.398 (0.2)
Proper motion (declination) [mas/yr] -1.323361243 (0.1) -1.342410193 (0.3) -1.323 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.49 (0.02) 18.52 (0.02) 18.49 (0.01)
g magnitude 18.50 (0.007) 18.51 (0.02) 18.50 (0.007)
r magnitude 18.96 (0.01) 18.96 (0.02) 18.96 (0.01)
i magnitude 19.38 (0.02) 19.37 (0.02) 19.38 (0.02)
z magnitude 19.58 (0.06) 19.57 (0.09) 19.58 (0.06)
G magnitude 18.71 (0.02) 18.76 18.71 (0.004)
BP magnitude 18.59 (0.02) 18.53
RP magnitude 18.96 (0.04) 18.90
Pan g magnitude 18.54 (0.003)
Pan r magnitude 18.91 (0.01)
Pan i magnitude 19.24 (0.008)
Pan z magnitude 19.51 (0.009)
Pan y magnitude 19.30 (0.2)
E(B-V) 0.030

* 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.