| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 16:52:02 |
| WDS: | HDS444 | WDS ID/Discoverer |
| P: | 20.520 | Orbital period (years) |
| a: | 0.079 | Semi-major axis (arcseconds) |
| i: | 37.3 | Inclination (degrees) |
| Ω: | 228.2 | Longitude of ascending node (degrees) |
| T: | 2025.082 | Epoch of periastron passage (year) |
| e: | 0.57 | Eccentricity |
| ω: | 159.9 | Longitude of periastron (degrees) |
| Start-Year: | 2015.0 | Year |
| End-Year: | 2035.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 033103.99-002852.1 | Epoch-2000 right ascension and declination |
| WDS-ID: | 03311-0029 | WDS designation |
| Discoverer Code: | HDS444 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 21822 | HD catalog number |
| Hipparcos number: | 16389 | Hipparcos catalog number |
| V1: | 7.06 | Magnitude of the primary |
| V2: | 7.99 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2023 | 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 0.033 26.6 ------------------------- 2015.0 0.122 212.8 2016.0 0.122 217.7 2017.0 0.120 222.6 2018.0 0.115 227.7 2019.0 0.108 233.4 2020.0 0.099 240.1 2021.0 0.086 248.4 2022.0 0.071 260.0 2023.0 0.053 279.1 2024.0 0.035 318.6 2025.0 0.033 26.6 2026.0 0.038 83.4 2027.0 0.047 123.9 2028.0 0.059 149.8 2029.0 0.073 166.4 2030.0 0.085 178.0 2031.0 0.096 186.7 2032.0 0.105 193.8 2033.0 0.112 199.8 2034.0 0.117 205.3