Double Star Calculator - Orbit

Orbital Elements for HDS1491

WDS:	HDS1491	WDS ID/Discoverer
P:	22.140	Orbital period (years)
a:	0.11934	Semi-major axis (arcseconds)
i:	150.1	Inclination (degrees)
Ω:	250.79	Longitude of ascending node (degrees)
T:	2024.090	Epoch of periastron passage (year)
e:	0.1954	Eccentricity
ω:	1.1	Longitude of periastron (degrees)
Start-Year:	2013.93	Year
End-Year:	2036.07	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1491
Position:	102124.30-261543.8	Epoch-2000 right ascension and declination
WDS-ID:	10214-2616	WDS designation
Discoverer Code:	HDS1491	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	89817	HD catalog number
Hipparcos number:	50724	Hipparcos catalog number
V1:	8.58	Magnitude of the primary
V2:	10.13	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Msn2023	Reference

Double Star Orbit for HDS1491

WDS 6th Orbit including measures of HDS1491

-- 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 HDS1491

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.094   197.17
--------------------------
2013.93    0.141    60.98
2014.03    0.141    59.99
2014.13    0.141    59.00
2014.23    0.141    58.01
2014.33    0.140    57.01
2014.43    0.140    56.01
2014.53    0.139    55.00
2014.63    0.139    53.98
2014.73    0.139    52.96
2014.83    0.138    51.93
2014.93    0.138    50.90
2015.03    0.137    49.85
2015.13    0.137    48.80
2015.23    0.136    47.74
2015.33    0.135    46.68
2015.43    0.135    45.60
2015.53    0.134    44.51
2015.63    0.134    43.42
2015.73    0.133    42.31
2015.83    0.132    41.19
2015.93    0.132    40.06
2016.03    0.131    38.92
2016.13    0.130    37.76
2016.23    0.129    36.59
2016.33    0.129    35.41
2016.43    0.128    34.21
2016.53    0.127    33.00
2016.63    0.126    31.77
2016.73    0.125    30.53
2016.83    0.125    29.27
2016.93    0.124    28.00
2017.03    0.123    26.70
2017.13    0.122    25.39
2017.23    0.121    24.06
2017.33    0.120    22.71
2017.43    0.119    21.34
2017.53    0.119    19.95
2017.63    0.118    18.54
2017.73    0.117    17.10
2017.83    0.116    15.65
2017.93    0.115    14.17
2018.03    0.114    12.67
2018.13    0.113    11.15
2018.23    0.112     9.60
2018.33    0.111     8.03
2018.43    0.111     6.43
2018.53    0.110     4.81
2018.63    0.109     3.16
2018.73    0.108     1.48
2018.83    0.107   359.79
2018.93    0.106   358.06
2019.03    0.106   356.31
2019.13    0.105   354.53
2019.23    0.104   352.73
2019.33    0.103   350.89
2019.43    0.103   349.04
2019.53    0.102   347.16
2019.63    0.101   345.25
2019.73    0.101   343.32
2019.83    0.100   341.37
2019.93    0.099   339.39
2020.03    0.099   337.39
2020.13    0.098   335.36
2020.23    0.098   333.32
2020.33    0.097   331.26
2020.43    0.097   329.18
2020.53    0.097   327.08
2020.63    0.096   324.96
2020.73    0.096   322.83
2020.83    0.096   320.69
2020.93    0.095   318.53
2021.03    0.095   316.36
2021.13    0.095   314.19
2021.23    0.095   312.00
2021.33    0.095   309.81
2021.43    0.095   307.61
2021.53    0.095   305.41
2021.63    0.094   303.21
2021.73    0.094   301.00
2021.83    0.094   298.80
2021.93    0.094   296.59
2022.03    0.095   294.39
2022.13    0.095   292.19
2022.23    0.095   289.99
2022.33    0.095   287.79
2022.43    0.095   285.60
2022.53    0.095   283.41
2022.63    0.095   281.23
2022.73    0.095   279.05
2022.83    0.095   276.88
2022.93    0.095   274.71
2023.03    0.095   272.55
2023.13    0.096   270.39
2023.23    0.096   268.24
2023.33    0.096   266.09
2023.43    0.096   263.94
2023.53    0.096   261.80
2023.63    0.096   259.66
2023.73    0.096   257.52
2023.83    0.096   255.39
2023.93    0.096   253.25
2024.03    0.096   251.12
2024.13    0.096   248.98
2024.23    0.096   246.85
2024.33    0.096   244.71
2024.43    0.096   242.57
2024.53    0.096   240.42
2024.63    0.096   238.27
2024.73    0.096   236.12
2024.83    0.095   233.97
2024.93    0.095   231.80
2025.03    0.095   229.64
2025.13    0.095   227.46
2025.23    0.095   225.28
2025.33    0.095   223.10
2025.43    0.095   220.91
2025.53    0.095   218.71
2025.63    0.094   216.51
2025.73    0.094   214.30
2025.83    0.094   212.09
2025.93    0.094   209.87
2026.03    0.094   207.64
2026.13    0.094   205.42
2026.23    0.094   203.19
2026.33    0.094   200.96
2026.43    0.094   198.73
2026.53    0.094   196.50
2026.63    0.094   194.27
2026.73    0.094   192.05
2026.83    0.094   189.83
2026.93    0.094   187.62
2027.03    0.095   185.41
2027.13    0.095   183.22
2027.23    0.095   181.03
2027.33    0.095   178.86
2027.43    0.096   176.69
2027.53    0.096   174.55
2027.63    0.096   172.42
2027.73    0.097   170.31
2027.83    0.097   168.21
2027.93    0.098   166.14
2028.03    0.098   164.09
2028.13    0.099   162.06
2028.23    0.099   160.05
2028.33    0.100   158.07
2028.43    0.101   156.11
2028.53    0.101   154.18
2028.63    0.102   152.27
2028.73    0.103   150.39
2028.83    0.103   148.54
2028.93    0.104   146.71
2029.03    0.105   144.91
2029.13    0.106   143.14
2029.23    0.107   141.39
2029.33    0.107   139.67
2029.43    0.108   137.98
2029.53    0.109   136.31
2029.63    0.110   134.67
2029.73    0.111   133.06
2029.83    0.112   131.47
2029.93    0.113   129.91
2030.03    0.114   128.37
2030.13    0.114   126.86
2030.23    0.115   125.37
2030.33    0.116   123.90
2030.43    0.117   122.46
2030.53    0.118   121.04
2030.63    0.119   119.63
2030.73    0.120   118.26
2030.83    0.121   116.90
2030.93    0.122   115.56
2031.03    0.123   114.24
2031.13    0.123   112.94
2031.23    0.124   111.65
2031.33    0.125   110.39
2031.43    0.126   109.14
2031.53    0.127   107.91
2031.63    0.128   106.69
2031.73    0.128   105.49
2031.83    0.129   104.30
2031.93    0.130   103.13
2032.03    0.131   101.97
2032.13    0.131   100.82
2032.23    0.132    99.68
2032.33    0.133    98.56
2032.43    0.133    97.45
2032.53    0.134    96.35
2032.63    0.135    95.26
2032.73    0.135    94.18
2032.83    0.136    93.11
2032.93    0.136    92.05
2033.03    0.137    91.00
2033.13    0.138    89.95
2033.23    0.138    88.92
2033.33    0.139    87.89
2033.43    0.139    86.86
2033.53    0.139    85.85
2033.63    0.140    84.84
2033.73    0.140    83.83
2033.83    0.140    82.83
2033.93    0.141    81.84
2034.03    0.141    80.84
2034.13    0.141    79.86
2034.23    0.142    78.87
2034.33    0.142    77.89
2034.43    0.142    76.92
2034.53    0.142    75.94
2034.63    0.142    74.97
2034.73    0.142    74.00
2034.83    0.143    73.03
2034.93    0.143    72.06
2035.03    0.143    71.09
2035.13    0.143    70.13
2035.23    0.143    69.16
2035.33    0.143    68.19
2035.43    0.143    67.22
2035.53    0.142    66.25
2035.63    0.142    65.28
2035.73    0.142    64.31
2035.83    0.142    63.33
2035.93    0.142    62.35
2036.03    0.142    61.37

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 16:26:49