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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:23:41

Orbital Elements for STF1837

WDS:	STF1837	WDS ID/Discoverer
P:	1566.317	Orbital period (years)
a:	2.98177	Semi-major axis (arcseconds)
i:	111.978	Inclination (degrees)
Ω:	67.383	Longitude of ascending node (degrees)
T:	2098.767	Epoch of periastron passage (year)
e:	0.80586	Eccentricity
ω:	248.865	Longitude of periastron (degrees)
Start-Year:	1242.0	Year
End-Year:	2808.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1837

Position:	142440.84-114010.9	Epoch-2000 right ascension and declination
WDS-ID:	14247-1140	WDS designation
Discoverer Code:	STF1837	Discover designation and components
ADS number:	9254	Aitken Double Star catalog
HD number:	126251	HD catalog number
Hipparcos number:	70452	Hipparcos catalog number
V1:	6.87	Magnitude of the primary
V2:	7.94	Magnitude of the secondary
Equinox:		Equinox
Date:	2014	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for STF1837

WDS 6th Orbit including measures of STF1837

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

Ephemeris of STF1837

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.180    268.7
-------------------------
1242.0     2.856     27.6
1252.0     2.837     27.1
1262.0     2.817     26.5
1272.0     2.797     25.9
1282.0     2.776     25.3
1292.0     2.754     24.7
1302.0     2.733     24.1
1312.0     2.710     23.5
1322.0     2.688     22.9
1332.0     2.665     22.3
1342.0     2.641     21.6
1352.0     2.617     21.0
1362.0     2.593     20.3
1372.0     2.569     19.6
1382.0     2.544     18.9
1392.0     2.518     18.2
1402.0     2.493     17.5
1412.0     2.467     16.8
1422.0     2.441     16.0
1432.0     2.415     15.3
1442.0     2.388     14.5
1452.0     2.361     13.7
1462.0     2.334     12.8
1472.0     2.307     12.0
1482.0     2.279     11.1
1492.0     2.252     10.3
1502.0     2.224      9.4
1512.0     2.196      8.4
1522.0     2.168      7.5
1532.0     2.140      6.5
1542.0     2.112      5.5
1552.0     2.084      4.5
1562.0     2.056      3.4
1572.0     2.028      2.3
1582.0     2.000      1.2
1592.0     1.972      0.1
1602.0     1.944    358.9
1612.0     1.916    357.7
1622.0     1.889    356.4
1632.0     1.861    355.1
1642.0     1.834    353.8
1652.0     1.807    352.4
1662.0     1.781    351.0
1672.0     1.755    349.6
1682.0     1.729    348.1
1692.0     1.704    346.5
1702.0     1.679    345.0
1712.0     1.654    343.3
1722.0     1.630    341.7
1732.0     1.607    339.9
1742.0     1.585    338.1
1752.0     1.563    336.3
1762.0     1.542    334.4
1772.0     1.521    332.5
1782.0     1.502    330.5
1792.0     1.483    328.5
1802.0     1.465    326.4
1812.0     1.448    324.3
1822.0     1.432    322.1
1832.0     1.416    319.9
1842.0     1.402    317.6
1852.0     1.389    315.2
1862.0     1.376    312.9
1872.0     1.365    310.5
1882.0     1.354    308.0
1892.0     1.344    305.5
1902.0     1.335    303.0
1912.0     1.327    300.5
1922.0     1.319    297.9
1932.0     1.311    295.2
1942.0     1.303    292.6
1952.0     1.295    289.9
1962.0     1.286    287.2
1972.0     1.277    284.4
1982.0     1.266    281.6
1992.0     1.253    278.8
2002.0     1.236    275.9
2012.0     1.216    272.8
2022.0     1.189    269.7
2032.0     1.155    266.4
2042.0     1.109    262.9
2052.0     1.048    259.0
2062.0     0.964    254.5
2072.0     0.846    249.0
2082.0     0.680    241.3
2092.0     0.454    226.8
2102.0     0.236    181.6
2112.0     0.341    109.5
2122.0     0.606     87.4
2132.0     0.855     78.7
2142.0     1.073     73.8
2152.0     1.263     70.5
2162.0     1.430     68.0
2172.0     1.578     66.0
2182.0     1.711     64.3
2192.0     1.831     62.9
2202.0     1.939     61.6
2212.0     2.039     60.4
2222.0     2.129     59.4
2232.0     2.213     58.4
2242.0     2.290     57.5
2252.0     2.361     56.7
2262.0     2.427     55.9
2272.0     2.488     55.2
2282.0     2.544     54.5
2292.0     2.597     53.8
2302.0     2.646     53.1
2312.0     2.691     52.5
2322.0     2.733     51.9
2332.0     2.773     51.3
2342.0     2.809     50.7
2352.0     2.843     50.1
2362.0     2.874     49.6
2372.0     2.903     49.0
2382.0     2.930     48.5
2392.0     2.954     48.0
2402.0     2.977     47.4
2412.0     2.998     46.9
2422.0     3.016     46.4
2432.0     3.034     45.9
2442.0     3.049     45.5
2452.0     3.063     45.0
2462.0     3.075     44.5
2472.0     3.086     44.0
2482.0     3.095     43.5
2492.0     3.103     43.1
2502.0     3.110     42.6
2512.0     3.116     42.1
2522.0     3.120     41.7
2532.0     3.123     41.2
2542.0     3.125     40.7
2552.0     3.126     40.3
2562.0     3.126     39.8
2572.0     3.124     39.3
2582.0     3.122     38.9
2592.0     3.119     38.4
2602.0     3.115     38.0
2612.0     3.110     37.5
2622.0     3.104     37.0
2632.0     3.097     36.5
2642.0     3.089     36.1
2652.0     3.081     35.6
2662.0     3.071     35.1
2672.0     3.061     34.6
2682.0     3.051     34.2
2692.0     3.039     33.7
2702.0     3.027     33.2
2712.0     3.014     32.7
2722.0     3.000     32.2
2732.0     2.986     31.7
2742.0     2.971     31.2
2752.0     2.955     30.6
2762.0     2.939     30.1
2772.0     2.922     29.6
2782.0     2.905     29.1
2792.0     2.887     28.5
2802.0     2.868     28.0

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.