Double Star Calculator - Orbit

Orbital Elements for RMK8

WDS:	RMK8	WDS ID/Discoverer
P:	30000.000	Orbital period (years)
a:	21.0	Semi-major axis (arcseconds)
i:	73.0	Inclination (degrees)
Ω:	70.4	Longitude of ascending node (degrees)
T:	1950.000	Epoch of periastron passage (year)
e:	0.8	Eccentricity
ω:	350.0	Longitude of periastron (degrees)
Start-Year:	-12975.0	Year
End-Year:	17025.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RMK8
Position:	081515.91-625456.2	Epoch-2000 right ascension and declination
WDS-ID:	08153-6255	WDS designation
Discoverer Code:	RMK8	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	69863	HD catalog number
Hipparcos number:	40429	Hipparcos catalog number
V1:	5.27	Magnitude of the primary
V2:	7.62	Magnitude of the secondary
Equinox:	2000	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:	LRR2018b	Reference

Double Star Orbit for RMK8

WDS 6th Orbit including measures of RMK8

-- 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 RMK8

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    4.246    71.47
--------------------------
-12975.00   37.292   247.50
-12875.00   37.312   247.57
-12775.00   37.329   247.63
-12675.00   37.343   247.70
-12575.00   37.355   247.77
-12475.00   37.363   247.83
-12375.00   37.369   247.90
-12275.00   37.373   247.96
-12175.00   37.373   248.03
-12075.00   37.371   248.10
-11975.00   37.366   248.16
-11875.00   37.358   248.23
-11775.00   37.347   248.30
-11675.00   37.333   248.36
-11575.00   37.317   248.43
-11475.00   37.298   248.50
-11375.00   37.276   248.56
-11275.00   37.251   248.63
-11175.00   37.224   248.70
-11075.00   37.193   248.76
-10975.00   37.160   248.83
-10875.00   37.124   248.90
-10775.00   37.085   248.97
-10675.00   37.043   249.03
-10575.00   36.998   249.10
-10475.00   36.951   249.17
-10375.00   36.900   249.24
-10275.00   36.847   249.31
-10175.00   36.790   249.37
-10075.00   36.731   249.44
-9975.00   36.669   249.51
-9875.00   36.603   249.58
-9775.00   36.535   249.65
-9675.00   36.464   249.72
-9575.00   36.390   249.79
-9475.00   36.313   249.86
-9375.00   36.232   249.93
-9275.00   36.149   250.00
-9175.00   36.063   250.07
-9075.00   35.974   250.15
-8975.00   35.881   250.22
-8875.00   35.786   250.29
-8775.00   35.687   250.36
-8675.00   35.585   250.44
-8575.00   35.480   250.51
-8475.00   35.372   250.58
-8375.00   35.261   250.66
-8275.00   35.146   250.73
-8175.00   35.029   250.81
-8075.00   34.908   250.88
-7975.00   34.784   250.96
-7875.00   34.656   251.04
-7775.00   34.525   251.11
-7675.00   34.391   251.19
-7575.00   34.254   251.27
-7475.00   34.113   251.35
-7375.00   33.968   251.43
-7275.00   33.821   251.51
-7175.00   33.669   251.59
-7075.00   33.515   251.68
-6975.00   33.356   251.76
-6875.00   33.195   251.84
-6775.00   33.029   251.93
-6675.00   32.860   252.01
-6575.00   32.688   252.10
-6475.00   32.511   252.19
-6375.00   32.331   252.27
-6275.00   32.148   252.36
-6175.00   31.960   252.45
-6075.00   31.769   252.55
-5975.00   31.574   252.64
-5875.00   31.375   252.73
-5775.00   31.172   252.83
-5675.00   30.965   252.92
-5575.00   30.754   253.02
-5475.00   30.539   253.12
-5375.00   30.319   253.22
-5275.00   30.096   253.32
-5175.00   29.869   253.42
-5075.00   29.637   253.53
-4975.00   29.401   253.64
-4875.00   29.160   253.74
-4775.00   28.915   253.85
-4675.00   28.666   253.97
-4575.00   28.412   254.08
-4475.00   28.154   254.20
-4375.00   27.890   254.31
-4275.00   27.622   254.44
-4175.00   27.350   254.56
-4075.00   27.072   254.68
-3975.00   26.790   254.81
-3875.00   26.502   254.94
-3775.00   26.209   255.08
-3675.00   25.911   255.21
-3575.00   25.608   255.35
-3475.00   25.300   255.50
-3375.00   24.986   255.64
-3275.00   24.666   255.79
-3175.00   24.341   255.95
-3075.00   24.010   256.11
-2975.00   23.673   256.27
-2875.00   23.330   256.44
-2775.00   22.982   256.61
-2675.00   22.626   256.79
-2575.00   22.265   256.97
-2475.00   21.897   257.16
-2375.00   21.522   257.36
-2275.00   21.141   257.57
-2175.00   20.753   257.78
-2075.00   20.357   258.00
-1975.00   19.954   258.23
-1875.00   19.544   258.46
-1775.00   19.127   258.71
-1675.00   18.701   258.97
-1575.00   18.267   259.24
-1475.00   17.825   259.53
-1375.00   17.375   259.83
-1275.00   16.916   260.14
-1175.00   16.448   260.48
-1075.00   15.970   260.83
-975.00   15.484   261.21
-875.00   14.987   261.61
-775.00   14.480   262.03
-675.00   13.963   262.49
-575.00   13.435   262.99
-475.00   12.897   263.52
-375.00   12.346   264.11
-275.00   11.784   264.74
-175.00   11.210   265.45
-75.00   10.623   266.23
25.00   10.024   267.10
125.00    9.412   268.08
225.00    8.786   269.20
325.00    8.147   270.50
425.00    7.495   272.02
525.00    6.830   273.83
625.00    6.155   276.04
725.00    5.469   278.80
825.00    4.779   282.35
925.00    4.091   287.10
1025.00    3.420   293.74
1125.00    2.793   303.50
1225.00    2.267   318.31
1325.00    1.945   339.83
1425.00    1.941     5.18
1525.00    2.248    26.89
1625.00    2.735    42.10
1725.00    3.266    52.48
1825.00    3.742    60.04
1925.00    4.083    66.08
2025.00    4.245    71.39
2125.00    4.219    76.54
2225.00    4.038    81.96
2325.00    3.751    88.07
2425.00    3.410    95.32
2525.00    3.065   104.21
2625.00    2.762   115.22
2725.00    2.550   128.50
2825.00    2.471   143.37
2925.00    2.544   158.30
3025.00    2.758   171.64
3125.00    3.084   182.61
3225.00    3.487   191.27
3325.00    3.940   198.04
3425.00    4.423   203.37
3525.00    4.926   207.63
3625.00    5.440   211.10
3725.00    5.958   213.96
3825.00    6.478   216.37
3925.00    6.997   218.42
4025.00    7.514   220.18
4125.00    8.026   221.72
4225.00    8.534   223.08
4325.00    9.037   224.28
4425.00    9.534   225.36
4525.00   10.025   226.33
4625.00   10.510   227.21
4725.00   10.989   228.01
4825.00   11.461   228.75
4925.00   11.927   229.43
5025.00   12.387   230.06
5125.00   12.841   230.64
5225.00   13.288   231.19
5325.00   13.730   231.69
5425.00   14.165   232.17
5525.00   14.594   232.62
5625.00   15.018   233.04
5725.00   15.435   233.45
5825.00   15.847   233.82
5925.00   16.253   234.19
6025.00   16.654   234.53
6125.00   17.049   234.86
6225.00   17.438   235.17
6325.00   17.823   235.47
6425.00   18.202   235.75
6525.00   18.575   236.03
6625.00   18.944   236.29
6725.00   19.308   236.54
6825.00   19.667   236.79
6925.00   20.021   237.02
7025.00   20.370   237.25
7125.00   20.714   237.47
7225.00   21.054   237.69
7325.00   21.389   237.89
7425.00   21.719   238.09
7525.00   22.045   238.28
7625.00   22.367   238.47
7725.00   22.684   238.66
7825.00   22.997   238.83
7925.00   23.306   239.01
8025.00   23.610   239.18
8125.00   23.910   239.34
8225.00   24.206   239.50
8325.00   24.498   239.66
8425.00   24.786   239.81
8525.00   25.070   239.96
8625.00   25.350   240.11
8725.00   25.626   240.25
8825.00   25.898   240.39
8925.00   26.167   240.53
9025.00   26.431   240.66
9125.00   26.692   240.79
9225.00   26.949   240.92
9325.00   27.203   241.05
9425.00   27.453   241.17
9525.00   27.699   241.29
9625.00   27.941   241.41
9725.00   28.180   241.53
9825.00   28.416   241.65
9925.00   28.648   241.76
10025.00   28.877   241.87
10125.00   29.102   241.98
10225.00   29.323   242.09
10325.00   29.542   242.20
10425.00   29.757   242.31
10525.00   29.968   242.41
10625.00   30.177   242.51
10725.00   30.382   242.61
10825.00   30.583   242.71
10925.00   30.782   242.81
11025.00   30.977   242.91
11125.00   31.169   243.01
11225.00   31.358   243.10
11325.00   31.544   243.19
11425.00   31.726   243.29
11525.00   31.906   243.38
11625.00   32.082   243.47
11725.00   32.255   243.56
11825.00   32.425   243.65
11925.00   32.592   243.74
12025.00   32.756   243.82
12125.00   32.917   243.91
12225.00   33.075   243.99
12325.00   33.230   244.08
12425.00   33.382   244.16
12525.00   33.531   244.25
12625.00   33.677   244.33
12725.00   33.820   244.41
12825.00   33.961   244.49
12925.00   34.098   244.57
13025.00   34.232   244.65
13125.00   34.363   244.73
13225.00   34.492   244.81
13325.00   34.617   244.88
13425.00   34.740   244.96
13525.00   34.860   245.04
13625.00   34.977   245.11
13725.00   35.091   245.19
13825.00   35.202   245.27
13925.00   35.311   245.34
14025.00   35.416   245.41
14125.00   35.519   245.49
14225.00   35.619   245.56
14325.00   35.716   245.63
14425.00   35.811   245.71
14525.00   35.902   245.78
14625.00   35.991   245.85
14725.00   36.077   245.92
14825.00   36.160   245.99
14925.00   36.240   246.06
15025.00   36.318   246.13
15125.00   36.393   246.21
15225.00   36.465   246.28
15325.00   36.534   246.34
15425.00   36.601   246.41
15525.00   36.665   246.48
15625.00   36.726   246.55
15725.00   36.784   246.62
15825.00   36.840   246.69
15925.00   36.892   246.76
16025.00   36.942   246.83
16125.00   36.990   246.89
16225.00   37.034   246.96
16325.00   37.076   247.03
16425.00   37.115   247.10
16525.00   37.152   247.16
16625.00   37.185   247.23
16725.00   37.216   247.30
16825.00   37.244   247.37
16925.00   37.269   247.43

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 16:06:04