| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:44:36 |
| WDS: | HDS2440 | WDS ID/Discoverer |
| P: | 25.730 | Orbital period (years) |
| a: | 0.15369999999999998 | Semi-major axis (arcseconds) |
| i: | 120.5 | Inclination (degrees) |
| Ω: | 75.25 | Longitude of ascending node (degrees) |
| T: | 2002.460 | Epoch of periastron passage (year) |
| e: | 0.252 | Eccentricity |
| ω: | 109.3 | Longitude of periastron (degrees) |
| Start-Year: | 2013.0 | Year |
| End-Year: | 2037.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 171528.89+105136.0 | Epoch-2000 right ascension and declination |
| WDS-ID: | 17155+1052 | WDS designation |
| Discoverer Code: | HDS2440 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 156146 | HD catalog number |
| Hipparcos number: | 84417 | Hipparcos catalog number |
| V1: | 9.24 | Magnitude of the primary |
| V2: | 10.04 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | 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 0.111 52.6 ------------------------- 2013.0 0.096 167.3 2014.0 0.100 150.1 2015.0 0.108 135.0 2016.0 0.120 122.5 2017.0 0.133 112.3 2018.0 0.145 103.9 2019.0 0.155 96.7 2020.0 0.162 90.3 2021.0 0.164 84.2 2022.0 0.160 78.0 2023.0 0.151 71.4 2024.0 0.134 63.4 2025.0 0.111 52.6 2026.0 0.084 35.1 2027.0 0.062 2.6 2028.0 0.064 317.9 2029.0 0.086 287.6 2030.0 0.111 270.6 2031.0 0.128 259.3 2032.0 0.137 250.2 2033.0 0.137 241.6 2034.0 0.132 232.7 2035.0 0.123 222.7 2036.0 0.112 210.9