| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:44:30 |
| WDS: | ELP40 | WDS ID/Discoverer |
| P: | 19.690 | Orbital period (years) |
| a: | 0.117 | Semi-major axis (arcseconds) |
| i: | 141.6 | Inclination (degrees) |
| Ω: | 37.6 | Longitude of ascending node (degrees) |
| T: | 2009.120 | Epoch of periastron passage (year) |
| e: | 0.235 | Eccentricity |
| ω: | 7.8 | Longitude of periastron (degrees) |
| Start-Year: | 2016.0 | Year |
| End-Year: | 2034.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 171503.61-274939.7 | Epoch-2000 right ascension and declination |
| WDS-ID: | 17151-2750 | WDS designation |
| Discoverer Code: | ELP40 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | . | HD catalog number |
| Hipparcos number: | . | Hipparcos catalog number |
| V1: | 8.06 | Magnitude of the primary |
| V2: | 8.22 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2022 | Date of last observation |
| Orbit grade: | 2 | Orbit grade, ranging from 1 'definitive' to 5 'indeterminate' |
| Flags: | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 0.089 126.2 ------------------------- 2016.0 0.131 240.3 2017.0 0.139 229.8 2018.0 0.144 220.3 2019.0 0.144 211.2 2020.0 0.140 201.7 2021.0 0.133 191.6 2022.0 0.123 179.9 2023.0 0.110 165.8 2024.0 0.098 148.2 2025.0 0.089 126.2 2026.0 0.085 100.9 2027.0 0.087 75.1 2028.0 0.090 50.7 2029.0 0.089 26.9 2030.0 0.084 1.4 2031.0 0.081 333.0 2032.0 0.085 304.7 2033.0 0.095 281.0