ER Ori

Simbad link ER Ori
Source publication Lame'E, M. M. (2010) - Photometric observation and light curve analysis of binary system ER-Orionis
ADS link 2010JApA...31...97L
Name in Source publication ER Ori
Orbital period in days (P [d]) 0.423399
Mass ratio (q) 0.5
Mass ratio determination Photometric
Type W
Has total eclipse?
Has spots?
Has third light?
Has period variation?

Solver WD
Orbital period in days (P [d]) 0.423399
Mass ratio (q) 0.5
Orbital inclination in degrees (i [o]) 85.4
Fillout (f) 0.02
Primary temperature in Kelvins (T1 [K]) 5504
Secondary temperature in Kelvins (T2 [K]) 5507
Primary polar radius in units of orbital separation (r1p) 0.4144
Secondary polar radius in units of orbital separation (r2p) 0.3012
Surface potential (Ω) 2.879

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]) 5504
Secondary temperature in Kelvins (T2 [K]) 5507
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]) 0.423399
Monotonic period variation in seconds per year (dPdt [s/y]) 0.007586
Cyclic period variation in years (Pc [y]) 53.7
Period study Nelson, Robert H. (2015) - An updated period analysis for ER Orionis: A definitive solution
ADS link 2015NewA...34..159N

Designation Gaia DR2 3206917595908399232
RA 77:48:37.740852
DEC -9:26:34.870841
l 209.1965958
b -26.13370938
G magnitude 9.448812
G_bp magnitude 9.713833
G_rp magnitude 8.968343
Radial velocity [km/s]
Parallax 4.1717558
Distance [pc] 0.239707
Temperature [K] 6060
Radius [R] 2.4028325
Luminosity [L] 7.0150723

Simbad link ER Ori
J magnitude 8.29
H magnitude 8.032
K magnitude 7.973
Johnson_U magnitude
Johnson_B magnitude 10.02
Johnson_V magnitude 9.46
Johnson_R magnitude
Johnson_I magnitude
Sloan_u magnitude
Sloan_g magnitude 9.4488
Sloan_r magnitude
Sloan_i magnitude
Sloan_z magnitude

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