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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:21:07
WDS:
STT437AB
WDS ID/Discoverer
P:
1218.096
Orbital period (years)
a:
3.65733
Semi-major axis (arcseconds)
i:
103.165
Inclination (degrees)
Ω:
7.623
Longitude of ascending node (degrees)
T:
2180.047
Epoch of periastron passage (year)
e:
0.50075
Eccentricity
ω:
65.074
Longitude of periastron (degrees)
Start-Year:
1416.0
Year
End-Year:
2634.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
212050.12+322710.2
Epoch-2000 right ascension and declination
WDS-ID:
21208+3227
WDS designation
Discoverer Code:
STT437AB
Discover designation and components
ADS number:
14889
Aitken Double Star catalog
HD number:
203358
HD catalog number
Hipparcos number:
105390
Hipparcos catalog number
V1:
7.15
Magnitude of the primary
V2:
7.42
Magnitude of the secondary
Equinox:
Equinox
Date:
2015
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)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 2.463 18.2
-------------------------
1416.0 3.676 174.0
1426.0 3.622 173.4
1436.0 3.565 172.8
1446.0 3.505 172.1
1456.0 3.442 171.5
1466.0 3.377 170.8
1476.0 3.310 170.1
1486.0 3.241 169.4
1496.0 3.169 168.6
1506.0 3.095 167.8
1516.0 3.019 167.0
1526.0 2.942 166.1
1536.0 2.863 165.2
1546.0 2.783 164.2
1556.0 2.701 163.2
1566.0 2.618 162.1
1576.0 2.534 160.9
1586.0 2.449 159.7
1596.0 2.364 158.3
1606.0 2.278 156.9
1616.0 2.191 155.3
1626.0 2.105 153.6
1636.0 2.019 151.8
1646.0 1.934 149.8
1656.0 1.850 147.6
1666.0 1.767 145.2
1676.0 1.686 142.6
1686.0 1.607 139.7
1696.0 1.532 136.6
1706.0 1.460 133.1
1716.0 1.393 129.2
1726.0 1.332 125.0
1736.0 1.277 120.4
1746.0 1.230 115.5
1756.0 1.192 110.2
1766.0 1.163 104.5
1776.0 1.145 98.7
1786.0 1.138 92.7
1796.0 1.143 86.7
1806.0 1.159 80.8
1816.0 1.185 75.1
1826.0 1.221 69.7
1836.0 1.265 64.7
1846.0 1.317 60.0
1856.0 1.376 55.7
1866.0 1.440 51.7
1876.0 1.508 48.1
1886.0 1.579 44.9
1896.0 1.652 41.9
1906.0 1.727 39.2
1916.0 1.803 36.7
1926.0 1.878 34.3
1936.0 1.953 32.2
1946.0 2.026 30.3
1956.0 2.096 28.4
1966.0 2.164 26.7
1976.0 2.228 25.1
1986.0 2.288 23.6
1996.0 2.343 22.1
2006.0 2.391 20.7
2016.0 2.432 19.4
2026.0 2.466 18.1
2036.0 2.489 16.8
2046.0 2.503 15.6
2056.0 2.504 14.3
2066.0 2.491 13.1
2076.0 2.463 11.8
2086.0 2.417 10.5
2096.0 2.352 9.1
2106.0 2.265 7.7
2116.0 2.155 6.1
2126.0 2.019 4.3
2136.0 1.856 2.2
2146.0 1.665 359.7
2156.0 1.450 356.5
2166.0 1.212 352.0
2176.0 0.960 345.4
2186.0 0.710 333.9
2196.0 0.502 311.5
2206.0 0.432 272.8
2216.0 0.560 238.7
2226.0 0.791 220.9
2236.0 1.050 211.5
2246.0 1.311 205.8
2256.0 1.565 202.0
2266.0 1.807 199.3
2276.0 2.034 197.2
2286.0 2.247 195.4
2296.0 2.445 194.0
2306.0 2.628 192.8
2316.0 2.797 191.8
2326.0 2.952 190.8
2336.0 3.094 190.0
2346.0 3.224 189.2
2356.0 3.342 188.5
2366.0 3.449 187.8
2376.0 3.545 187.1
2386.0 3.631 186.5
2396.0 3.708 186.0
2406.0 3.777 185.4
2416.0 3.836 184.9
2426.0 3.888 184.3
2436.0 3.932 183.8
2446.0 3.969 183.3
2456.0 3.999 182.8
2466.0 4.023 182.4
2476.0 4.041 181.9
2486.0 4.052 181.4
2496.0 4.058 180.9
2506.0 4.058 180.5
2516.0 4.054 180.0
2526.0 4.044 179.5
2536.0 4.030 179.0
2546.0 4.011 178.6
2556.0 3.988 178.1
2566.0 3.960 177.6
2576.0 3.929 177.1
2586.0 3.894 176.6
2596.0 3.855 176.0
2606.0 3.813 175.5
2616.0 3.767 175.0
2626.0 3.718 174.4
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 .
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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