| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 16:56:14 |
| WDS: | HDS521AB | WDS ID/Discoverer |
| P: | 21.040 | Orbital period (years) |
| a: | 0.2302 | Semi-major axis (arcseconds) |
| i: | 121.5 | Inclination (degrees) |
| Ω: | 220.4 | Longitude of ascending node (degrees) |
| T: | 2017.930 | Epoch of periastron passage (year) |
| e: | 0.712 | Eccentricity |
| ω: | 77.4 | Longitude of periastron (degrees) |
| Start-Year: | 2015.0 | Year |
| End-Year: | 2035.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 040700.63-100000.4 | Epoch-2000 right ascension and declination |
| WDS-ID: | 04070-1000 | WDS designation |
| Discoverer Code: | HDS521AB | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 26040 | HD catalog number |
| Hipparcos number: | 19206 | Hipparcos catalog number |
| V1: | 7.29 | Magnitude of the primary |
| V2: | 8.60 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | Date of last observation | |
| Orbit grade: | 2 | Orbit grade, ranging from 1 'definitive' to 5 'indeterminate' |
| Flags: | n | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 0.238 355.3 ------------------------- 2015.0 0.160 261.0 2016.0 0.145 246.8 2017.0 0.111 227.0 2018.0 0.035 135.2 2019.0 0.123 43.7 2020.0 0.178 29.1 2021.0 0.209 20.3 2022.0 0.226 13.3 2023.0 0.235 7.1 2024.0 0.239 1.2 2025.0 0.238 355.3 2026.0 0.235 349.4 2027.0 0.229 343.2 2028.0 0.222 336.6 2029.0 0.214 329.7 2030.0 0.206 322.1 2031.0 0.198 313.9 2032.0 0.190 305.1 2033.0 0.182 295.4 2034.0 0.176 285.0