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] | 239.707224 |
| 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 |