SDSS J164751.77+221138.9

All names: Gaia DR3 4565767354834871808, Gaia EDR3 4565767354834871808, SDSS J164751.77+221138.9, SDSS J164751.77+221138.90, GALEX J164751.8+221139, Gaia DR2 4565767354834871808

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 47 51.77 (0.3) 16 47 51.78 16 47 51.77 (0.5) 16 47 51.78 (0.3) 16 47 51.77
Declination 22 11 38.89 (0.4) 22 11 38.89 22 11 38.89 (0.5) 22 11 38.93 (0.4) 22 11 38.88
Spectral type DB DB DB hotDQ
Effective temperature [K] 11285.0 15009.0 10931.0 14474.0 (698)
log(g) [cgs] 6.41 8.56 8.07 9.60 (0.3)
Mass [M] 0.06 0.949 0.626 1.615 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.5491
log(H/He) <-5.967
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 3.02 (0.5) 2.45 (0.8) 3.02 (0.5)
Distance [pc] 330.85 (60) 408.54 (126) 330.85 (60)
Composition He
Proper motion (right ascension) [mas/yr] -12.59519977 (0.5) -12.73077831 (1) -12.595 (0.5)
Proper motion (declination) [mas/yr] -3.011307658 (0.5) -5.223472458 (1) -3.011 (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 20.25 (0.05) 20.15 (0.04) 20.15 (0.04)
g magnitude 20.27 (0.02) 20.27 (0.02) 20.27 (0.02)
r magnitude 20.53 (0.03) 20.55 (0.03)
i magnitude 20.76 (0.05) 20.73 (0.05) 20.73 (0.05)
z magnitude 20.37 (0.1) 20.83 (0.2) 20.83 (0.2)
G magnitude 20.37 (0.06) 20.45 20.37 (0.006)
BP magnitude 20.38 (0.06) 20.19
RP magnitude 20.37 (0.08) 20.37
Pan g magnitude 20.30 (0.02)
Pan r magnitude 20.49 (0.02)
Pan i magnitude 20.74 (0.03)
Pan z magnitude 20.59 (0.2)
Pan y magnitude
E(B-V) 0.034

* 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.