SDSS J164216.88+215024.7

All names: Gaia DR2 4565880849347921920, Gaia EDR3 4565880849347921920, Gaia DR3 4565880849347921920, GALEX J164216.8+215024, SDSS J164216.88+215024.7

Parameter Unit Gaia EDR3 SDSS DR12 Gaia DR2 Stilism Simbad Kleinman et al. 2013
Right ascension 16 42 16.88 (0.8) 16 42 16.88 16 42 16.88 (1) 16 42 16.89 (0.8) 16 42 16.88
Declination 21 50 24.58 (0.9) 21 50 24.70 21 50 24.57 (2) 21 50 24.59 (0.9) 21 50 24.70
Spectral type DAH DAH
Effective temperature [K] 47059.0 (8744)
log(g) [cgs] 7.47 (0.9)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 2.26 (1) 2.26 (1)
Distance [pc] 441.77 (251) 441.77 (251)
Composition
Proper motion (right ascension) [mas/yr] -5.997071651 (1) -5.997 (1)
Proper motion (declination) [mas/yr] -1.081238004 (1) -1.081 (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 20.04 (0.04) 20.05 (0.05) 20.05 (0.05)
g magnitude 20.46 (0.02) 20.46 (0.03) 20.46 (0.03)
r magnitude 20.93 (0.04) 20.92 (0.04) 20.92 (0.04)
i magnitude 21.38 (0.08) 21.33 (0.07) 21.33 (0.07)
z magnitude 21.49 (0.3) 21.53 (0.3) 21.53 (0.3)
G magnitude 20.72 (0.09) 20.83 20.72 (0.009)
BP magnitude 20.38 (0.09) 20.20
RP magnitude 20.77 (0.2) 20.61
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.039

* 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.