| WDS: | A253 | WDS ID/Discoverer |
| P: | 102.840 | Orbital period (years) |
| a: | 0.492 | Semi-major axis (arcseconds) |
| i: | 61.4 | Inclination (degrees) |
| Ω: | 119.4 | Longitude of ascending node (degrees) |
| T: | 1943.480 | Epoch of periastron passage (year) |
| e: | 0.768 | Eccentricity |
| ω: | 190.6 | Longitude of periastron (degrees) |
| Start-Year: | 1973.58 | Year |
| End-Year: | 2076.42 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for A253 |
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| Position: | 184343.55+314054.1 | Epoch-2000 right ascension and declination |
| WDS-ID: | 18437+3141 | WDS designation |
| Discoverer Code: | A253 | Discover designation and components |
| ADS number: | 11623 | Aitken Double Star catalog |
| HD number: | . | HD catalog number |
| Hipparcos number: | 91868 | Hipparcos catalog number |
| V1: | 9.71 | Magnitude of the primary |
| V2: | 10.29 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2023 | Date of last observation |
| Orbit grade: | 3 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Doc2024b | 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 0.522 140.43 -------------------------- 1973.58 0.760 116.49 1974.58 0.771 116.93 1975.58 0.782 117.36 1976.58 0.791 117.78 1977.58 0.800 118.19 1978.58 0.808 118.59 1979.58 0.816 118.99 1980.58 0.823 119.37 1981.58 0.829 119.75 1982.58 0.835 120.13 1983.58 0.840 120.50 1984.58 0.845 120.86 1985.58 0.849 121.23 1986.58 0.852 121.59 1987.58 0.855 121.94 1988.58 0.857 122.30 1989.58 0.859 122.65 1990.58 0.860 123.00 1991.58 0.861 123.35 1992.58 0.861 123.70 1993.58 0.860 124.05 1994.58 0.859 124.41 1995.58 0.857 124.76 1996.58 0.855 125.11 1997.58 0.852 125.47 1998.58 0.849 125.83 1999.58 0.845 126.19 2000.58 0.841 126.56 2001.58 0.836 126.93 2002.58 0.831 127.30 2003.58 0.824 127.68 2004.58 0.818 128.06 2005.58 0.811 128.46 2006.58 0.803 128.86 2007.58 0.795 129.26 2008.58 0.786 129.68 2009.58 0.777 130.10 2010.58 0.767 130.54 2011.58 0.756 130.99 2012.58 0.745 131.45 2013.58 0.733 131.92 2014.58 0.721 132.42 2015.58 0.708 132.93 2016.58 0.694 133.45 2017.58 0.680 134.00 2018.58 0.665 134.58 2019.58 0.649 135.18 2020.58 0.633 135.81 2021.58 0.616 136.48 2022.58 0.598 137.18 2023.58 0.580 137.93 2024.58 0.561 138.73 2025.58 0.541 139.59 2026.58 0.520 140.51 2027.58 0.499 141.51 2028.58 0.476 142.60 2029.58 0.453 143.81 2030.58 0.429 145.14 2031.58 0.404 146.64 2032.58 0.378 148.34 2033.58 0.351 150.29 2034.58 0.324 152.58 2035.58 0.295 155.30 2036.58 0.266 158.61 2037.58 0.236 162.76 2038.58 0.205 168.13 2039.58 0.175 175.36 2040.58 0.147 185.50 2041.58 0.122 200.14 2042.58 0.105 220.70 2043.58 0.101 245.62 2044.58 0.108 269.59 2045.58 0.116 290.02 2046.58 0.109 310.01 2047.58 0.089 336.76 2048.58 0.080 15.17 2049.58 0.100 49.07 2050.58 0.135 68.52 2051.58 0.175 79.52 2052.58 0.215 86.43 2053.58 0.253 91.21 2054.58 0.290 94.74 2055.58 0.325 97.50 2056.58 0.358 99.73 2057.58 0.390 101.59 2058.58 0.419 103.18 2059.58 0.448 104.56 2060.58 0.475 105.79 2061.58 0.500 106.88 2062.58 0.525 107.87 2063.58 0.548 108.77 2064.58 0.570 109.60 2065.58 0.591 110.37 2066.58 0.611 111.09 2067.58 0.630 111.76 2068.58 0.648 112.40 2069.58 0.665 113.00 2070.58 0.681 113.58 2071.58 0.697 114.12 2072.58 0.711 114.65 2073.58 0.725 115.15 2074.58 0.738 115.63 2075.58 0.751 116.10
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 17:54:18 |