Double Star Calculator - Orbit

Orbital Elements for YSC72

WDS:	YSC72	WDS ID/Discoverer
P:	12.120	Orbital period (years)
a:	0.11	Semi-major axis (arcseconds)
i:	129.5	Inclination (degrees)
Ω:	134.2	Longitude of ascending node (degrees)
T:	2013.030	Epoch of periastron passage (year)
e:	0.828	Eccentricity
ω:	150.5	Longitude of periastron (degrees)
Start-Year:	2018.94	Year
End-Year:	2031.06	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for YSC72
Position:	213421.07-074445.8	Epoch-2000 right ascension and declination
WDS-ID:	21344-0745	WDS designation
Discoverer Code:	YSC72	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	106510	Hipparcos catalog number
V1:	10.9	Magnitude of the primary
V2:	12.5	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Tok2023a	Reference

Double Star Orbit for YSC72

WDS 6th Orbit including measures of YSC72

-- 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 YSC72

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.076   188.00
--------------------------
2018.94    0.185   154.55
2019.04    0.186   154.18
2019.14    0.186   153.81
2019.24    0.187   153.44
2019.34    0.187   153.07
2019.44    0.187   152.71
2019.54    0.187   152.34
2019.64    0.188   151.98
2019.74    0.188   151.61
2019.84    0.188   151.25
2019.94    0.187   150.88
2020.04    0.187   150.52
2020.14    0.187   150.15
2020.24    0.187   149.78
2020.34    0.186   149.41
2020.44    0.186   149.04
2020.54    0.185   148.67
2020.64    0.184   148.29
2020.74    0.184   147.91
2020.84    0.183   147.53
2020.94    0.182   147.14
2021.04    0.181   146.75
2021.14    0.180   146.36
2021.24    0.178   145.96
2021.34    0.177   145.55
2021.44    0.176   145.14
2021.54    0.174   144.72
2021.64    0.172   144.29
2021.74    0.171   143.86
2021.84    0.169   143.42
2021.94    0.167   142.96
2022.04    0.165   142.50
2022.14    0.163   142.02
2022.24    0.161   141.53
2022.34    0.158   141.02
2022.44    0.156   140.50
2022.54    0.153   139.97
2022.64    0.150   139.41
2022.74    0.147   138.83
2022.84    0.144   138.23
2022.94    0.141   137.60
2023.04    0.138   136.94
2023.14    0.134   136.24
2023.24    0.130   135.51
2023.34    0.126   134.73
2023.44    0.122   133.90
2023.54    0.118   133.02
2023.64    0.113   132.06
2023.74    0.109   131.02
2023.84    0.104   129.88
2023.94    0.098   128.62
2024.04    0.093   127.22
2024.14    0.087   125.62
2024.24    0.080   123.78
2024.34    0.073   121.60
2024.44    0.066   118.97
2024.54    0.058   115.66
2024.64    0.050   111.27
2024.74    0.041   105.02
2024.84    0.031    95.03
2024.94    0.022    75.94
2025.04    0.015    33.60
2025.14    0.017   338.30
2025.24    0.021   303.68
2025.34    0.024   278.91
2025.44    0.027   258.85
2025.54    0.030   242.86
2025.64    0.034   230.44
2025.74    0.039   220.83
2025.84    0.044   213.31
2025.94    0.049   207.30
2026.04    0.054   202.41
2026.14    0.059   198.35
2026.24    0.064   194.91
2026.34    0.068   191.96
2026.44    0.073   189.39
2026.54    0.078   187.13
2026.64    0.082   185.11
2026.74    0.086   183.31
2026.84    0.091   181.67
2026.94    0.095   180.17
2027.04    0.099   178.80
2027.14    0.103   177.54
2027.24    0.106   176.36
2027.34    0.110   175.27
2027.44    0.114   174.24
2027.54    0.117   173.28
2027.64    0.120   172.37
2027.74    0.124   171.51
2027.84    0.127   170.69
2027.94    0.130   169.92
2028.04    0.133   169.18
2028.14    0.136   168.47
2028.24    0.139   167.79
2028.34    0.141   167.13
2028.44    0.144   166.50
2028.54    0.147   165.90
2028.64    0.149   165.31
2028.74    0.151   164.74
2028.84    0.154   164.19
2028.94    0.156   163.66
2029.04    0.158   163.14
2029.14    0.160   162.63
2029.24    0.162   162.14
2029.34    0.164   161.66
2029.44    0.166   161.19
2029.54    0.168   160.73
2029.64    0.169   160.27
2029.74    0.171   159.83
2029.84    0.172   159.40
2029.94    0.174   158.97
2030.04    0.175   158.55
2030.14    0.177   158.14
2030.24    0.178   157.73
2030.34    0.179   157.33
2030.44    0.180   156.93
2030.54    0.181   156.53
2030.64    0.182   156.15
2030.74    0.183   155.76
2030.84    0.184   155.38
2030.94    0.184   155.00
2031.04    0.185   154.63

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 18:27:23