EGGR 494

Other names: 1705+030, G139-013

Parameter Unit Holberg et al. 2016 Simbad
Right ascension 17 08 07.96
Declination 02 57 37.01
Spectral type DZ7.7 DZ7
Effective temperature [K] 6585.0
log(g) [cgs] 8.15
Mass [M☉] 0.69
log(Luminosity) [L☉]
Cooling age [Gyr] 2.5400
log(H/He)
log(C/He)
log(Ca/He)
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] 57.00 57.00
Distance [pc] 17.54 17.54
Composition He
Proper motion (right ascension) [mas/yr] -6.0
Proper motion (declination) [mas/yr] -399.0
Variability
Magnetic
Db [MG]
Infrared excess (disk)
Binarity
B magnitude 15.65
V magnitude 15.19 15.17
R magnitude 14.50
I magnitude 14.70
J magnitude 14.56
H magnitude 14.50
K magnitude 14.51
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude

* Constant surface field

Special notes:

Spectra

Absorption lines

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.