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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:36:12

Orbital Elements for RST1876

WDS:	RST1876	WDS ID/Discoverer
P:	61.200	Orbital period (years)
a:	0.194	Semi-major axis (arcseconds)
i:	121.0	Inclination (degrees)
Ω:	70.9	Longitude of ascending node (degrees)
T:	2016.580	Epoch of periastron passage (year)
e:	0.919	Eccentricity
ω:	129.8	Longitude of periastron (degrees)
Start-Year:	1995.0	Year
End-Year:	2055.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST1876

Position:	160630.93-402700.5	Epoch-2000 right ascension and declination
WDS-ID:	16065-4027	WDS designation
Discoverer Code:	RST1876	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	144259	HD catalog number
Hipparcos number:	78915	Hipparcos catalog number
V1:	7.80	Magnitude of the primary
V2:	8.55	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for RST1876

WDS 6th Orbit including measures of RST1876

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

Ephemeris of RST1876

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.136    124.7
-------------------------
1995.0     0.281     97.6
1996.0     0.279     97.0
1997.0     0.277     96.4
1998.0     0.274     95.8
1999.0     0.270     95.2
2000.0     0.266     94.6
2001.0     0.261     93.9
2002.0     0.256     93.3
2003.0     0.250     92.6
2004.0     0.243     91.8
2005.0     0.235     91.0
2006.0     0.227     90.2
2007.0     0.217     89.3
2008.0     0.207     88.3
2009.0     0.195     87.2
2010.0     0.182     85.9
2011.0     0.167     84.4
2012.0     0.150     82.7
2013.0     0.131     80.4
2014.0     0.107     77.2
2015.0     0.077     71.8
2016.0     0.035     56.0
2017.0     0.025    227.5
2018.0     0.039    181.9
2019.0     0.054    160.1
2020.0     0.069    148.0
2021.0     0.084    140.2
2022.0     0.098    134.7
2023.0     0.112    130.6
2024.0     0.124    127.4
2025.0     0.136    124.7
2026.0     0.148    122.5
2027.0     0.159    120.6
2028.0     0.169    118.9
2029.0     0.179    117.4
2030.0     0.188    116.1
2031.0     0.197    114.9
2032.0     0.205    113.8
2033.0     0.213    112.8
2034.0     0.221    111.8
2035.0     0.227    110.9
2036.0     0.234    110.1
2037.0     0.240    109.3
2038.0     0.246    108.5
2039.0     0.251    107.8
2040.0     0.256    107.1
2041.0     0.261    106.4
2042.0     0.265    105.7
2043.0     0.269    105.1
2044.0     0.272    104.5
2045.0     0.275    103.9
2046.0     0.278    103.3
2047.0     0.280    102.7
2048.0     0.282    102.2
2049.0     0.283    101.6
2050.0     0.284    101.0
2051.0     0.285    100.5
2052.0     0.285     99.9
2053.0     0.285     99.4
2054.0     0.284     98.8

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.