V839 Oph

Simbad link V839 Oph
Source publication Deb, Sukanta (2011) - Physical parameters of 62 eclipsing binary stars using the All Sky Automated Survey-3 data - I
ADS link 2011MNRAS.412.1787D
Name in Source publication 180921+0909.1
Orbital period in days (P [d]) 0.409008
Mass ratio (q) 0.31
Mass ratio determination Spectroscopic
Type W
Has total eclipse?
Has spots?
Has third light?
Has period variation?

Solver WD
Orbital period in days (P [d]) 0.409008
Mass ratio (q) 0.31
Orbital inclination in degrees (i [o]) 80.2
Fillout (f) 0.6
Primary temperature in Kelvins (T1 [K]) 6381
Secondary temperature in Kelvins (T2 [K]) 6424
Primary polar radius in units of orbital separation (r1p) 0.4789
Secondary polar radius in units of orbital separation (r2p) 0.2891
Surface potential (Ω) 2.363

Orbital separation in solar radii (a [R]) 2.98
Primary radius in solar units (R1 [R]) 1.55
Secondary radius in solar units (R2 [R]) 0.95
Primary mass in solar units (M1 [M]) 1.63
Secondary mass in solar units (M2 [M]) 0.5
Primary temperature in kelvins (T1 [K]) 6381
Secondary temperature in Kelvins (T2 [K]) 6424
Primary luminosity in solar units (L1 [L]) 3.55
Secondary luminosity in solar units (L2 [L]) 1.39
Distance in parsecs (d [pc])
Age in gigayears (τ [gyr]) 2.69

Orbital period in days (P [d]) 0.409008
Monotonic period variation in seconds per year (dPdt [s/y]) 0.027994
Cyclic period variation in years (Pc [y]) 36.7
Period study Hanna, Magdy A. (2010) - Period Variation Study of the A-Type W UMa Eclipsing Binary V839 Oph
ADS link 2010JKAS...43..201H

Designation Gaia DR2 4481606508598024064
RA 272:20:18.46752
DEC 9:09:03.622007
l 36.43020592
b 13.47130936
G magnitude 8.825685
G_bp magnitude 9.135123
G_rp magnitude 8.336453
Radial velocity [km/s]
Parallax 8.703666455
Distance [pc] 0.114894
Temperature [K] 5889.025
Radius [R] 1.6305073
Luminosity [L] 2.8808048

Simbad link V839 Oph
J magnitude 7.91
H magnitude 7.666
K magnitude 7.566
Johnson_U magnitude 8.286
Johnson_B magnitude 9.62
Johnson_V magnitude 9.03
Johnson_R magnitude
Johnson_I magnitude
Sloan_u magnitude
Sloan_g magnitude 8.8257
Sloan_r magnitude
Sloan_i magnitude 8.286
Sloan_z magnitude

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