Double Star Calculator - Orbit

Orbital Elements for STF2837

WDS:	STF2837	WDS ID/Discoverer
P:	1153.302	Orbital period (years)
a:	4.69589	Semi-major axis (arcseconds)
i:	116.269	Inclination (degrees)
Ω:	146.809	Longitude of ascending node (degrees)
T:	1794.794	Epoch of periastron passage (year)
e:	0.846	Eccentricity
ω:	95.766	Longitude of periastron (degrees)
Start-Year:	1448.34915	Year
End-Year:	2601.65085	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF2837
Position:	213658.67+825516.5	Epoch-2000 right ascension and declination
WDS-ID:	21370+8255	WDS designation
Discoverer Code:	STF2837	Discover designation and components
ADS number:	15229	Aitken Double Star catalog
HD number:	207146	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	8.84	Magnitude of the primary
V2:	9.36	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Izm2019	Reference

Double Star Orbit for STF2837

WDS 6th Orbit including measures of STF2837

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

Legend:

Green plus signs:	Visual (micrometric) measures
Violet asterisks:	Photographic measures
Blue symbols:	Various interferometric techniques
Dot-dash line:	Indicates the line of nodes

Ephemeris of STF2837

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    3.202   267.51
--------------------------
1448.35    4.026   200.68
1458.35    4.018   199.67
1468.35    4.008   198.66
1478.35    3.997   197.65
1488.35    3.985   196.63
1498.35    3.970   195.60
1508.35    3.954   194.57
1518.35    3.935   193.53
1528.35    3.914   192.47
1538.35    3.891   191.41
1548.35    3.866   190.33
1558.35    3.838   189.23
1568.35    3.807   188.12
1578.35    3.772   186.99
1588.35    3.735   185.84
1598.35    3.694   184.66
1608.35    3.648   183.45
1618.35    3.599   182.22
1628.35    3.545   180.94
1638.35    3.485   179.63
1648.35    3.420   178.27
1658.35    3.348   176.85
1668.35    3.269   175.37
1678.35    3.181   173.80
1688.35    3.084   172.15
1698.35    2.976   170.38
1708.35    2.854   168.47
1718.35    2.716   166.38
1728.35    2.559   164.04
1738.35    2.377   161.38
1748.35    2.161   158.23
1758.35    1.901   154.29
1768.35    1.573   148.90
1778.35    1.142   140.00
1788.35    0.561   115.29
1798.35    0.475     4.25
1808.35    1.041   332.22
1818.35    1.438   321.60
1828.35    1.716   315.07
1838.35    1.926   310.18
1848.35    2.093   306.16
1858.35    2.230   302.69
1868.35    2.346   299.59
1878.35    2.446   296.76
1888.35    2.534   294.14
1898.35    2.612   291.69
1908.35    2.681   289.37
1918.35    2.745   287.16
1928.35    2.803   285.05
1938.35    2.856   283.02
1948.35    2.905   281.06
1958.35    2.951   279.17
1968.35    2.994   277.33
1978.35    3.035   275.54
1988.35    3.073   273.80
1998.35    3.109   272.10
2008.35    3.144   270.44
2018.35    3.176   268.81
2028.35    3.208   267.22
2038.35    3.238   265.66
2048.35    3.268   264.12
2058.35    3.296   262.61
2068.35    3.323   261.13
2078.35    3.350   259.67
2088.35    3.376   258.24
2098.35    3.401   256.82
2108.35    3.425   255.43
2118.35    3.449   254.05
2128.35    3.473   252.70
2138.35    3.496   251.36
2148.35    3.518   250.04
2158.35    3.540   248.73
2168.35    3.562   247.45
2178.35    3.583   246.17
2188.35    3.603   244.91
2198.35    3.624   243.67
2208.35    3.644   242.44
2218.35    3.663   241.22
2228.35    3.682   240.02
2238.35    3.701   238.83
2248.35    3.720   237.65
2258.35    3.738   236.48
2268.35    3.756   235.32
2278.35    3.773   234.18
2288.35    3.790   233.04
2298.35    3.807   231.91
2308.35    3.823   230.80
2318.35    3.839   229.69
2328.35    3.854   228.59
2338.35    3.869   227.50
2348.35    3.884   226.42
2358.35    3.898   225.35
2368.35    3.911   224.29
2378.35    3.924   223.23
2388.35    3.937   222.18
2398.35    3.949   221.13
2408.35    3.960   220.09
2418.35    3.971   219.06
2428.35    3.981   218.03
2438.35    3.991   217.01
2448.35    4.000   215.99
2458.35    4.008   214.98
2468.35    4.015   213.97
2478.35    4.022   212.96
2488.35    4.028   211.96
2498.35    4.033   210.96
2508.35    4.037   209.96
2518.35    4.041   208.97
2528.35    4.043   207.97
2538.35    4.044   206.98
2548.35    4.044   205.99
2558.35    4.044   204.99
2568.35    4.042   204.00
2578.35    4.038   203.00
2588.35    4.034   202.01
2598.35    4.028   201.01

Disclaimer

This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 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.

Report Information

Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 18:27:41