EGGR 427

Other names: 0747+073.2, LHS 240

Parameter Unit Holberg et al. 2016 Simbad
Right ascension 07 50 15.34
Declination 07 11 37.28
Spectral type DC12.0 DC11
Effective temperature [K] 4723.0
log(g) [cgs] 7.95
Mass [M☉] 0.55
log(Luminosity) [L☉]
Cooling age [Gyr] 6.3000
log(H/He)
log(C/He)
log(Ca/He)
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(Ca/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 54.70 54.50
Distance [pc] 18.28 18.35
Composition H
Proper motion (right ascension) [mas/yr] 220.291
Proper motion (declination) [mas/yr] -1794.13
Variability
Magnetic
Db [MG]
Infrared excess (disk)
Binarity DDr
B magnitude 17.60
V magnitude 16.69 16.98
R magnitude 16.10
I magnitude 15.60
J magnitude 15.00
H magnitude 14.72
K magnitude 14.63
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude

* Constant surface field

Special notes:

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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.