Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:16:02

Orbital Elements for I1227
WDS: I1227 WDS ID/Discoverer
P: 100.880 Orbital period (years)
a: 0.317 Semi-major axis (arcseconds)
i: 133.2 Inclination (degrees)
Ω: 26.2 Longitude of ascending node (degrees)
T: 1981.740 Epoch of periastron passage (year)
e: 0.647 Eccentricity
ω: 90.2 Longitude of periastron (degrees)
Start-Year: 1975.0 Year
End-Year: 2075.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I1227
Position: 131323.38-504159.2 Epoch-2000 right ascension and declination
WDS-ID: 13134-5042 WDS designation
Discoverer Code: I1227 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 114772 HD catalog number
Hipparcos number: 64515 Hipparcos catalog number
V1: 6.56 Magnitude of the primary
V2: 6.78 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2006 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for I1227



WDS 6th Orbit including measures of I1227

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of I1227
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.355    126.5
-------------------------
1975.0     0.196     29.9
1976.0     0.180     24.6
1977.0     0.162     18.2
1978.0     0.141     10.0
1979.0     0.119    358.9
1980.0     0.098    342.7
1981.0     0.081    318.7
1982.0     0.077    287.7
1983.0     0.089    259.6
1984.0     0.109    240.1
1985.0     0.131    227.0
1986.0     0.152    217.6
1987.0     0.171    210.5
1988.0     0.189    204.7
1989.0     0.204    199.8
1990.0     0.218    195.6
1991.0     0.230    191.9
1992.0     0.241    188.5
1993.0     0.251    185.4
1994.0     0.260    182.5
1995.0     0.268    179.8
1996.0     0.275    177.3
1997.0     0.282    174.9
1998.0     0.288    172.6
1999.0     0.294    170.3
2000.0     0.299    168.2
2001.0     0.304    166.2
2002.0     0.309    164.2
2003.0     0.313    162.2
2004.0     0.317    160.3
2005.0     0.320    158.5
2006.0     0.324    156.7
2007.0     0.327    154.9
2008.0     0.330    153.2
2009.0     0.332    151.5
2010.0     0.335    149.8
2011.0     0.337    148.1
2012.0     0.339    146.5
2013.0     0.341    144.9
2014.0     0.343    143.3
2015.0     0.345    141.7
2016.0     0.346    140.1
2017.0     0.348    138.6
2018.0     0.349    137.0
2019.0     0.350    135.5
2020.0     0.351    134.0
2021.0     0.352    132.5
2022.0     0.353    130.9
2023.0     0.354    129.5
2024.0     0.355    128.0
2025.0     0.355    126.5
2026.0     0.356    125.0
2027.0     0.356    123.5
2028.0     0.357    122.0
2029.0     0.357    120.6
2030.0     0.357    119.1
2031.0     0.357    117.6
2032.0     0.357    116.2
2033.0     0.357    114.7
2034.0     0.357    113.2
2035.0     0.357    111.8
2036.0     0.357    110.3
2037.0     0.357    108.8
2038.0     0.356    107.4
2039.0     0.356    105.9
2040.0     0.355    104.4
2041.0     0.355    102.9
2042.0     0.354    101.4
2043.0     0.353     99.9
2044.0     0.352     98.4
2045.0     0.351     96.9
2046.0     0.350     95.4
2047.0     0.349     93.8
2048.0     0.347     92.3
2049.0     0.346     90.7
2050.0     0.344     89.2
2051.0     0.342     87.6
2052.0     0.341     86.0
2053.0     0.339     84.4
2054.0     0.336     82.7
2055.0     0.334     81.0
2056.0     0.331     79.4
2057.0     0.329     77.6
2058.0     0.326     75.9
2059.0     0.322     74.1
2060.0     0.319     72.3
2061.0     0.315     70.4
2062.0     0.311     68.5
2063.0     0.307     66.6
2064.0     0.302     64.5
2065.0     0.297     62.4
2066.0     0.291     60.3
2067.0     0.285     58.0
2068.0     0.278     55.7
2069.0     0.271     53.2
2070.0     0.263     50.6
2071.0     0.254     47.8
2072.0     0.245     44.8
2073.0     0.234     41.5
2074.0     0.222     37.9






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 4.0.


Acknowledgements
The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.


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