| WDS: | HO128AB | WDS ID/Discoverer |
| P: | 1027.981 | Orbital period (years) |
| a: | 2.6928 | Semi-major axis (arcseconds) |
| i: | 103.488 | Inclination (degrees) |
| Ω: | 167.665 | Longitude of ascending node (degrees) |
| T: | 2080.625 | Epoch of periastron passage (year) |
| e: | 0.70717 | Eccentricity |
| ω: | 248.513 | Longitude of periastron (degrees) |
| Start-Year: | 1511.00965 | Year |
| End-Year: | 2538.99035 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for HO128AB |
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| Position: | 202255.49+425900.4 | Epoch-2000 right ascension and declination |
| WDS-ID: | 20229+4259 | WDS designation |
| Discoverer Code: | HO128AB | Discover designation and components |
| ADS number: | 13786 | Aitken Double Star catalog |
| HD number: | 194220 | HD catalog number |
| Hipparcos number: | 100515 | Hipparcos catalog number |
| V1: | 6.41 | Magnitude of the primary |
| V2: | 8.82 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | 2013 | Date of last observation |
| Orbit grade: | 5 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Izm2019 | Reference |
-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --
| Green plus signs: | Visual (micrometric) measures |
| Violet asterisks: | Photographic measures |
| Blue symbols: | Various interferometric techniques |
| Dot-dash line: | Indicates the line of nodes |
Year Sep[“] PA[°] --------------------------------------------- 2026.50 1.304 354.81 -------------------------- 1511.01 2.230 142.34 1521.01 2.183 141.48 1531.01 2.136 140.58 1541.01 2.087 139.64 1551.01 2.037 138.66 1561.01 1.986 137.62 1571.01 1.935 136.53 1581.01 1.882 135.38 1591.01 1.829 134.17 1601.01 1.776 132.88 1611.01 1.722 131.51 1621.01 1.668 130.05 1631.01 1.614 128.50 1641.01 1.560 126.83 1651.01 1.506 125.05 1661.01 1.452 123.14 1671.01 1.399 121.08 1681.01 1.347 118.85 1691.01 1.296 116.46 1701.01 1.246 113.86 1711.01 1.198 111.06 1721.01 1.152 108.02 1731.01 1.108 104.74 1741.01 1.067 101.20 1751.01 1.030 97.39 1761.01 0.996 93.30 1771.01 0.967 88.96 1781.01 0.943 84.36 1791.01 0.924 79.55 1801.01 0.911 74.57 1811.01 0.903 69.47 1821.01 0.902 64.32 1831.01 0.906 59.19 1841.01 0.917 54.15 1851.01 0.933 49.25 1861.01 0.954 44.54 1871.01 0.980 40.06 1881.01 1.009 35.82 1891.01 1.042 31.83 1901.01 1.077 28.10 1911.01 1.113 24.60 1921.01 1.151 21.33 1931.01 1.188 18.27 1941.01 1.225 15.39 1951.01 1.260 12.68 1961.01 1.292 10.11 1971.01 1.320 7.65 1981.01 1.342 5.29 1991.01 1.357 2.99 2001.01 1.362 0.73 2011.01 1.353 358.46 2021.01 1.327 356.14 2031.01 1.278 353.68 2041.01 1.197 350.95 2051.01 1.071 347.71 2061.01 0.886 343.35 2071.01 0.631 335.97 2081.01 0.324 315.54 2091.01 0.220 228.41 2101.01 0.515 189.14 2111.01 0.827 179.37 2121.01 1.103 174.81 2131.01 1.342 171.99 2141.01 1.548 169.98 2151.01 1.726 168.42 2161.01 1.881 167.13 2171.01 2.016 166.03 2181.01 2.134 165.06 2191.01 2.237 164.18 2201.01 2.328 163.38 2211.01 2.407 162.63 2221.01 2.476 161.93 2231.01 2.536 161.26 2241.01 2.588 160.63 2251.01 2.632 160.01 2261.01 2.670 159.42 2271.01 2.702 158.84 2281.01 2.728 158.27 2291.01 2.748 157.71 2301.01 2.764 157.16 2311.01 2.775 156.61 2321.01 2.782 156.07 2331.01 2.785 155.53 2341.01 2.784 154.99 2351.01 2.779 154.45 2361.01 2.772 153.91 2371.01 2.761 153.36 2381.01 2.747 152.81 2391.01 2.730 152.25 2401.01 2.711 151.68 2411.01 2.689 151.11 2421.01 2.664 150.52 2431.01 2.638 149.93 2441.01 2.609 149.32 2451.01 2.578 148.70 2461.01 2.545 148.06 2471.01 2.510 147.40 2481.01 2.473 146.73 2491.01 2.435 146.03 2501.01 2.395 145.32 2511.01 2.354 144.57 2521.01 2.311 143.80 2531.01 2.266 143.00
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 18:14:41 |