SDSS J081640.53+365130.3

All names: GALEX J081640.5+365129, SDSS J081640.52+365130.2, Gaia EDR3 907640079860867968, Gaia DR3 907640079860867968, Gaia DR2 907640079860867968, SDSS J081640.53+365130.3

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 16 40.53 (0.5) 08 16 40.53 08 16 40.53 (0.6) 08 16 40.54 (0.5) 08 16 40.53
Declination 36 51 30.23 (0.4) 36 51 30.25 36 51 30.23 (0.5) 36 51 30.21 (0.4) 36 51 30.25
Spectral type DA DA DA DA DA
Effective temperature [K] 30413.0 (830) 22182.0 30398.0 (568)
log(g) [cgs] 8.43 (0.2) 7.66 8.41 (0.1)
Mass [M] 0.9 (0.1) 0.461 0.872 (0.08)
log(Luminosity) [L] -1.15 (0.2)
Cooling age [Gyr] 0.0295 (0.02) 0.0257
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] 0.86 (0.6) 1.06 (0.8) 0.86 (0.6)
Distance [pc] 1161.03 (808) 946.06 (682) 1161.04 (808)
Composition H H
Proper motion (right ascension) [mas/yr] -0.450990615 (0.6) -0.12015521 (1) -0.451 (0.6)
Proper motion (declination) [mas/yr] 1.197444462 (0.5) 2.554190689 (0.9) 1.197 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.77 (0.03) 19.77 (0.03) 19.74 (0.04)
g magnitude 19.93 (0.02) 19.93 (0.02) 19.94 (0.02)
r magnitude 20.33 (0.03) 20.33 (0.03) 20.32 (0.03)
i magnitude 20.76 (0.04) 20.76 (0.04) 20.75 (0.04)
z magnitude 20.60 (0.1) 20.60 (0.1) 20.64 (0.1)
G magnitude 20.15 (0.06) 20.21 20.15 (0.007)
BP magnitude 20.07 (0.06) 20.00
RP magnitude 20.44 (0.1) 20.64
Pan g magnitude 19.95 (0.01)
Pan r magnitude 20.31 (0.01)
Pan i magnitude 20.67 (0.01)
Pan z magnitude 20.80 (0.2)
Pan y magnitude
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.