YY Eri

Simbad link YY Eri
Source publication Yang, Y. (1999) - Photometric study of the late-type contact binary YY Eridani
ADS link 1999A&AS..136..139Y
Name in Source publication YY Eri
Orbital period in days (P [d]) 0.32165
Mass ratio (q) 0.45
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]) 0.32165
Mass ratio (q) 0.45
Orbital inclination in degrees (i [o]) 82.1
Fillout (f) 0.05
Primary temperature in Kelvins (T1 [K]) 5349
Secondary temperature in Kelvins (T2 [K]) 5600
Primary polar radius in units of orbital separation (r1p) 0.4248
Secondary polar radius in units of orbital separation (r2p) 0.2947
Surface potential (Ω) 2.7714

Orbital separation in solar radii (a [R])
Primary radius in solar units (R1 [R])
Secondary radius in solar units (R2 [R])
Primary mass in solar units (M1 [M])
Secondary mass in solar units (M2 [M])
Primary temperature in kelvins (T1 [K]) 5349
Secondary temperature in Kelvins (T2 [K]) 5600
Primary luminosity in solar units (L1 [L])
Secondary luminosity in solar units (L2 [L])
Distance in parsecs (d [pc])
Age in gigayears (τ [gyr])

Orbital period in days (P [d]) 0.32165
Monotonic period variation in seconds per year (dPdt [s/y]) 0.005513
Cyclic period variation in years (Pc [y]) 38.62
Period study Yu, Ting (2018) - Orbital period changes of the W UMa binary YY Eri
ADS link 2018RAA....18..106Y

Designation Gaia DR2 3191950017134972928
RA 63:02:10.969296
DEC -11:31:48.175104
l 203.5022775
b -40.0411183
G magnitude 8.438673
G_bp magnitude 8.778461
G_rp magnitude 7.886783
Radial velocity [km/s]
Parallax 17.76583635
Distance [pc] 0.056288
Temperature [K] 5517.25
Radius [R] 1.1022443
Luminosity [L] 1.0142407

Simbad link YY Eri
J magnitude 7.031
H magnitude 6.694
K magnitude 6.588
Johnson_U magnitude 7.673
Johnson_B magnitude 9.08
Johnson_V magnitude 8.41
Johnson_R magnitude
Johnson_I magnitude
Sloan_u magnitude
Sloan_g magnitude 8.4387
Sloan_r magnitude
Sloan_i magnitude 7.673
Sloan_z magnitude

Back to List