| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:54:56 |
| WDS: | HDS2554 | WDS ID/Discoverer |
| P: | 21.600 | Orbital period (years) |
| a: | 0.1118 | Semi-major axis (arcseconds) |
| i: | 75.3 | Inclination (degrees) |
| Ω: | 208.3 | Longitude of ascending node (degrees) |
| T: | 2001.400 | Epoch of periastron passage (year) |
| e: | 0.217 | Eccentricity |
| ω: | 160.0 | Longitude of periastron (degrees) |
| Start-Year: | 2015.0 | Year |
| End-Year: | 2035.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 180821.80+440645.1 | Epoch-2000 right ascension and declination |
| WDS-ID: | 18084+4407 | WDS designation |
| Discoverer Code: | HDS2554 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 166409 | HD catalog number |
| Hipparcos number: | 88852 | Hipparcos catalog number |
| V1: | 7.58 | Magnitude of the primary |
| V2: | 7.81 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2008 | 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 0.081 36.9 ------------------------- 2015.0 0.128 211.3 2016.0 0.116 214.7 2017.0 0.098 219.2 2018.0 0.074 226.3 2019.0 0.047 241.2 2020.0 0.026 288.8 2021.0 0.038 352.4 2022.0 0.064 13.5 2023.0 0.083 23.0 2024.0 0.089 29.9 2025.0 0.081 36.9 2026.0 0.064 46.6 2027.0 0.043 65.4 2028.0 0.029 110.6 2029.0 0.040 160.1 2030.0 0.063 180.9 2031.0 0.085 190.5 2032.0 0.105 196.3 2033.0 0.120 200.4 2034.0 0.130 203.6