SDSS J164441.78+460833.7

All names: SDSS J164441.78+460833.7, Gaia EDR3 1406228092925554432, SDSS J164441.78+460833.78, Gaia DR3 1406228092925554432, Gaia DR2 1406228092925554432

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Gaia DR2 Kepler et al. 2016 Simbad
Right ascension 16 44 41.78 (0.2) 16 44 41.79 16 44 41.78 (0.2) 16 44 41.78 (0.2)
Declination 46 08 33.47 (0.2) 46 08 33.50 46 08 33.47 (0.3) 46 08 33.50 (0.2)
Spectral type sdA sdA
Effective temperature [K] 7317.0 (46)
log(g) [cgs] 5.90 (0.2)
Mass [M☉] 0.15128 (0.0006)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] -0.12 (0.2) -0.57 (0.3)
Distance [pc]
Composition
Proper motion (right ascension) [mas/yr] -2.171741659 (0.2) -2.095739843 (0.5) -2.172 (0.2)
Proper motion (declination) [mas/yr] -2.204912235 (0.3) -2.266239607 (0.7) -2.205 (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 20.36 (0.05) 20.35 (0.05) 20.35 (0.05)
g magnitude 19.38 (0.01) 19.40 (0.02) 19.40 (0.02)
r magnitude 19.24 (0.01) 19.25 (0.01) 19.25 (0.01)
i magnitude 19.23 (0.01) 19.25 (0.03) 19.25 (0.03)
z magnitude 19.16 (0.05) 19.17 (0.05) 19.17 (0.05)
G magnitude 19.21 (0.04) 19.25 19.21 (0.004)
BP magnitude 19.42 (0.04) 19.44
RP magnitude 18.88 (0.04) 18.90
Pan g magnitude 19.37 (0.008)
Pan r magnitude 19.25 (0.01)
Pan i magnitude 19.23 (0.01)
Pan z magnitude 19.26 (0.02)
Pan y magnitude 19.19 (0.03)
E(B-V)

* 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.