| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:47:54 |
| WDS: | YSC158AA,AB | WDS ID/Discoverer |
| P: | 20.700 | Orbital period (years) |
| a: | 0.078 | Semi-major axis (arcseconds) |
| i: | 69.7 | Inclination (degrees) |
| Ω: | 99.4 | Longitude of ascending node (degrees) |
| T: | 2016.260 | Epoch of periastron passage (year) |
| e: | 0.277 | Eccentricity |
| ω: | 228.2 | Longitude of periastron (degrees) |
| Start-Year: | 2015.0 | Year |
| End-Year: | 2035.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 173613.32-175149.0 | Epoch-2000 right ascension and declination |
| WDS-ID: | 17362-1752 | WDS designation |
| Discoverer Code: | YSC158AA,AB | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 159589 | HD catalog number |
| Hipparcos number: | 86142 | Hipparcos catalog number |
| V1: | 8.2 | Magnitude of the primary |
| V2: | 8.8 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2022 | Date of last observation |
| Orbit grade: | 4 | 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 0.085 111.4 ------------------------- 2015.0 0.059 282.6 2016.0 0.045 295.6 2017.0 0.026 325.6 2018.0 0.024 37.6 2019.0 0.043 73.0 2020.0 0.063 85.8 2021.0 0.078 93.0 2022.0 0.087 98.1 2023.0 0.091 102.6 2024.0 0.090 106.9 2025.0 0.085 111.4 2026.0 0.077 116.7 2027.0 0.067 123.5 2028.0 0.055 133.1 2029.0 0.042 148.5 2030.0 0.033 174.4 2031.0 0.032 209.2 2032.0 0.040 237.4 2033.0 0.051 254.9 2034.0 0.059 266.5