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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:06:44

Orbital Elements for I422AB

WDS:	I422AB	WDS ID/Discoverer
P:	1715.800	Orbital period (years)
a:	1.316	Semi-major axis (arcseconds)
i:	81.9	Inclination (degrees)
Ω:	234.8	Longitude of ascending node (degrees)
T:	909.200	Epoch of periastron passage (year)
e:	0.73	Eccentricity
ω:	73.8	Longitude of periastron (degrees)
Start-Year:	1168.0	Year
End-Year:	2882.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I422AB

Position:	113820.37-632221.9	Epoch-2000 right ascension and declination
WDS-ID:	11383-6322	WDS designation
Discoverer Code:	I422AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	101205	HD catalog number
Hipparcos number:	56769	Hipparcos catalog number
V1:	7.10	Magnitude of the primary
V2:	7.42	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for I422AB

WDS 6th Orbit including measures of I422AB

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

Ephemeris of I422AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.324    122.6
-------------------------
1168.0     1.170     60.3
1178.0     1.180     60.6
1188.0     1.188     60.9
1198.0     1.195     61.1
1208.0     1.201     61.3
1218.0     1.206     61.6
1228.0     1.210     61.8
1238.0     1.213     62.1
1248.0     1.216     62.3
1258.0     1.217     62.5
1268.0     1.218     62.8
1278.0     1.218     63.0
1288.0     1.218     63.2
1298.0     1.216     63.5
1308.0     1.214     63.7
1318.0     1.212     64.0
1328.0     1.209     64.2
1338.0     1.205     64.4
1348.0     1.201     64.7
1358.0     1.196     64.9
1368.0     1.190     65.2
1378.0     1.185     65.4
1388.0     1.178     65.7
1398.0     1.172     65.9
1408.0     1.164     66.2
1418.0     1.157     66.4
1428.0     1.149     66.7
1438.0     1.140     67.0
1448.0     1.131     67.2
1458.0     1.122     67.5
1468.0     1.113     67.8
1478.0     1.103     68.1
1488.0     1.092     68.4
1498.0     1.082     68.7
1508.0     1.071     69.0
1518.0     1.060     69.3
1528.0     1.048     69.6
1538.0     1.036     69.9
1548.0     1.024     70.2
1558.0     1.012     70.6
1568.0     0.999     70.9
1578.0     0.986     71.3
1588.0     0.973     71.6
1598.0     0.960     72.0
1608.0     0.946     72.4
1618.0     0.932     72.8
1628.0     0.918     73.2
1638.0     0.904     73.6
1648.0     0.890     74.1
1658.0     0.875     74.5
1668.0     0.860     75.0
1678.0     0.845     75.5
1688.0     0.830     76.0
1698.0     0.815     76.5
1708.0     0.800     77.0
1718.0     0.784     77.6
1728.0     0.768     78.2
1738.0     0.752     78.8
1748.0     0.737     79.4
1758.0     0.721     80.0
1768.0     0.704     80.7
1778.0     0.688     81.5
1788.0     0.672     82.2
1798.0     0.656     83.0
1808.0     0.639     83.8
1818.0     0.623     84.7
1828.0     0.607     85.6
1838.0     0.590     86.6
1848.0     0.574     87.7
1858.0     0.558     88.7
1868.0     0.542     89.9
1878.0     0.526     91.1
1888.0     0.510     92.4
1898.0     0.494     93.8
1908.0     0.478     95.3
1918.0     0.463     96.9
1928.0     0.447     98.6
1938.0     0.432    100.4
1948.0     0.418    102.3
1958.0     0.404    104.4
1968.0     0.390    106.6
1978.0     0.377    109.0
1988.0     0.364    111.6
1998.0     0.352    114.3
2008.0     0.341    117.2
2018.0     0.330    120.3
2028.0     0.321    123.6
2038.0     0.313    127.1
2048.0     0.305    130.8
2058.0     0.299    134.6
2068.0     0.294    138.6
2078.0     0.291    142.7
2088.0     0.289    146.9
2098.0     0.288    151.1
2108.0     0.289    155.3
2118.0     0.291    159.4
2128.0     0.295    163.5
2138.0     0.300    167.4
2148.0     0.306    171.3
2158.0     0.314    174.9
2168.0     0.322    178.4
2178.0     0.332    181.6
2188.0     0.342    184.7
2198.0     0.353    187.6
2208.0     0.365    190.3
2218.0     0.378    192.9
2228.0     0.391    195.2
2238.0     0.404    197.4
2248.0     0.417    199.5
2258.0     0.431    201.5
2268.0     0.446    203.3
2278.0     0.460    205.0
2288.0     0.474    206.6
2298.0     0.489    208.1
2308.0     0.503    209.5
2318.0     0.517    210.9
2328.0     0.531    212.1
2338.0     0.545    213.4
2348.0     0.559    214.5
2358.0     0.572    215.6
2368.0     0.585    216.6
2378.0     0.598    217.6
2388.0     0.610    218.6
2398.0     0.621    219.5
2408.0     0.632    220.4
2418.0     0.642    221.3
2428.0     0.651    222.1
2438.0     0.659    222.9
2448.0     0.665    223.7
2458.0     0.671    224.5
2468.0     0.675    225.3
2478.0     0.677    226.1
2488.0     0.677    226.8
2498.0     0.675    227.6
2508.0     0.670    228.4
2518.0     0.662    229.1
2528.0     0.650    230.0
2538.0     0.634    230.8
2548.0     0.612    231.7
2558.0     0.584    232.7
2568.0     0.548    233.8
2578.0     0.502    235.0
2588.0     0.444    236.6
2598.0     0.372    238.7
2608.0     0.285    242.0
2618.0     0.184    248.6
2628.0     0.081    272.6
2638.0     0.076     12.1
2648.0     0.180     38.4
2658.0     0.285     45.3
2668.0     0.381     48.5
2678.0     0.468     50.4
2688.0     0.546     51.8
2698.0     0.616     52.8
2708.0     0.679     53.7
2718.0     0.735     54.4
2728.0     0.785     55.0
2738.0     0.831     55.5
2748.0     0.872     56.0
2758.0     0.910     56.4
2768.0     0.944     56.8
2778.0     0.975     57.2
2788.0     1.003     57.6
2798.0     1.029     57.9
2808.0     1.052     58.2
2818.0     1.074     58.5
2828.0     1.093     58.8
2838.0     1.110     59.1
2848.0     1.126     59.4
2858.0     1.140     59.7
2868.0     1.153     59.9
2878.0     1.164     60.2

Disclaimer

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.