| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 19:17:29 |
| WDS: | HDS2981 | WDS ID/Discoverer |
| P: | 19.320 | Orbital period (years) |
| a: | 0.099 | Semi-major axis (arcseconds) |
| i: | 156.4 | Inclination (degrees) |
| Ω: | 16.9 | Longitude of ascending node (degrees) |
| T: | 2023.330 | Epoch of periastron passage (year) |
| e: | 0.35 | Eccentricity |
| ω: | 191.1 | Longitude of periastron (degrees) |
| Start-Year: | 2016.0 | Year |
| End-Year: | 2034.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 205540.79-660859.7 | Epoch-2000 right ascension and declination |
| WDS-ID: | 20557-6609 | WDS designation |
| Discoverer Code: | HDS2981 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 198678 | HD catalog number |
| Hipparcos number: | 103302 | Hipparcos catalog number |
| V1: | 8.17 | Magnitude of the primary |
| V2: | 9.00 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2021 | Date of last observation |
| Orbit grade: | 3 | 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 0.069 125.1 ------------------------- 2016.0 0.125 345.1 2017.0 0.117 334.5 2018.0 0.108 322.2 2019.0 0.097 307.3 2020.0 0.086 288.7 2021.0 0.076 264.7 2022.0 0.069 234.6 2023.0 0.065 199.2 2024.0 0.064 161.1 2025.0 0.069 125.1 2026.0 0.079 96.1 2027.0 0.092 74.6 2028.0 0.104 58.3 2029.0 0.115 45.3 2030.0 0.124 34.3 2031.0 0.129 24.6 2032.0 0.133 15.5 2033.0 0.133 6.6