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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:46:06

Orbital Elements for STF360

WDS:	STF360	WDS ID/Discoverer
P:	1500.000	Orbital period (years)
a:	3.7	Semi-major axis (arcseconds)
i:	100.4	Inclination (degrees)
Ω:	109.8	Longitude of ascending node (degrees)
T:	1230.700	Epoch of periastron passage (year)
e:	0.375	Eccentricity
ω:	119.4	Longitude of periastron (degrees)
Start-Year:	1275.0	Year
End-Year:	2775.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF360

Position:	031209.59+371303.3	Epoch-2000 right ascension and declination
WDS-ID:	03122+3713	WDS designation
Discoverer Code:	STF360	Discover designation and components
ADS number:	2390	Aitken Double Star catalog
HD number:	19771	HD catalog number
Hipparcos number:	14886	Hipparcos catalog number
V1:	8.02	Magnitude of the primary
V2:	8.29	Magnitude of the secondary
Equinox:		Equinox
Date:	2017	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF360

WDS 6th Orbit including measures of STF360

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

Ephemeris of STF360

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     2.980    124.5
-------------------------
1275.0     1.940    297.2
1285.0     2.082    295.9
1295.0     2.211    294.7
1305.0     2.327    293.6
1315.0     2.430    292.6
1325.0     2.521    291.7
1335.0     2.598    290.9
1345.0     2.664    290.1
1355.0     2.717    289.3
1365.0     2.759    288.6
1375.0     2.789    287.9
1385.0     2.809    287.2
1395.0     2.820    286.5
1405.0     2.821    285.8
1415.0     2.813    285.1
1425.0     2.797    284.4
1435.0     2.774    283.7
1445.0     2.744    283.0
1455.0     2.707    282.2
1465.0     2.664    281.5
1475.0     2.615    280.7
1485.0     2.561    279.9
1495.0     2.503    279.0
1505.0     2.440    278.1
1515.0     2.374    277.2
1525.0     2.303    276.2
1535.0     2.230    275.1
1545.0     2.154    273.9
1555.0     2.076    272.7
1565.0     1.995    271.4
1575.0     1.913    269.9
1585.0     1.830    268.4
1595.0     1.746    266.7
1605.0     1.661    264.8
1615.0     1.576    262.7
1625.0     1.492    260.3
1635.0     1.409    257.7
1645.0     1.327    254.8
1655.0     1.248    251.4
1665.0     1.173    247.7
1675.0     1.102    243.4
1685.0     1.037    238.6
1695.0     0.979    233.2
1705.0     0.930    227.1
1715.0     0.892    220.5
1725.0     0.865    213.3
1735.0     0.853    205.9
1745.0     0.854    198.3
1755.0     0.869    190.9
1765.0     0.898    183.8
1775.0     0.938    177.3
1785.0     0.989    171.3
1795.0     1.049    166.0
1805.0     1.116    161.3
1815.0     1.188    157.2
1825.0     1.266    153.5
1835.0     1.347    150.3
1845.0     1.430    147.4
1855.0     1.516    144.9
1865.0     1.603    142.6
1875.0     1.692    140.6
1885.0     1.781    138.8
1895.0     1.871    137.1
1905.0     1.960    135.6
1915.0     2.050    134.3
1925.0     2.139    133.0
1935.0     2.228    131.9
1945.0     2.316    130.8
1955.0     2.403    129.8
1965.0     2.489    128.9
1975.0     2.575    128.0
1985.0     2.658    127.2
1995.0     2.741    126.5
2005.0     2.822    125.8
2015.0     2.902    125.1
2025.0     2.980    124.5
2035.0     3.057    123.8
2045.0     3.131    123.3
2055.0     3.204    122.7
2065.0     3.275    122.2
2075.0     3.344    121.7
2085.0     3.411    121.2
2095.0     3.476    120.8
2105.0     3.538    120.3
2115.0     3.598    119.9
2125.0     3.656    119.5
2135.0     3.711    119.1
2145.0     3.764    118.7
2155.0     3.814    118.3
2165.0     3.861    117.9
2175.0     3.905    117.5
2185.0     3.947    117.2
2195.0     3.986    116.8
2205.0     4.021    116.5
2215.0     4.053    116.2
2225.0     4.082    115.8
2235.0     4.108    115.5
2245.0     4.130    115.2
2255.0     4.149    114.8
2265.0     4.164    114.5
2275.0     4.175    114.2
2285.0     4.183    113.9
2295.0     4.186    113.6
2305.0     4.186    113.3
2315.0     4.181    113.0
2325.0     4.171    112.6
2335.0     4.158    112.3
2345.0     4.139    112.0
2355.0     4.116    111.7
2365.0     4.088    111.4
2375.0     4.056    111.0
2385.0     4.017    110.7
2395.0     3.974    110.3
2405.0     3.925    110.0
2415.0     3.871    109.6
2425.0     3.810    109.3
2435.0     3.744    108.9
2445.0     3.672    108.5
2455.0     3.594    108.1
2465.0     3.509    107.6
2475.0     3.417    107.2
2485.0     3.319    106.7
2495.0     3.214    106.2
2505.0     3.102    105.6
2515.0     2.983    105.0
2525.0     2.856    104.4
2535.0     2.723    103.7
2545.0     2.582    102.9
2555.0     2.434    102.0
2565.0     2.279    101.0
2575.0     2.117     99.9
2585.0     1.948     98.5
2595.0     1.772     97.0
2605.0     1.592     95.0
2615.0     1.406     92.5
2625.0     1.218     89.3
2635.0     1.028     84.9
2645.0     0.842     78.6
2655.0     0.668     68.8
2665.0     0.522     52.8
2675.0     0.439     28.0
2685.0     0.457    359.4
2695.0     0.565    337.6
2705.0     0.723    324.1
2715.0     0.902    315.6
2725.0     1.086    310.0
2735.0     1.271    306.0
2745.0     1.451    303.0
2755.0     1.624    300.7
2765.0     1.787    298.8

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.