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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:21:31

Orbital Elements for BU1270

WDS:	BU1270	WDS ID/Discoverer
P:	38.740	Orbital period (years)
a:	0.195	Semi-major axis (arcseconds)
i:	26.6	Inclination (degrees)
Ω:	116.6	Longitude of ascending node (degrees)
T:	1989.960	Epoch of periastron passage (year)
e:	0.435	Eccentricity
ω:	40.3	Longitude of periastron (degrees)
Start-Year:	2006.0	Year
End-Year:	2044.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1270

Position:	140343.26+082913.3	Epoch-2000 right ascension and declination
WDS-ID:	14037+0829	WDS designation
Discoverer Code:	BU1270	Discover designation and components
ADS number:	9094	Aitken Double Star catalog
HD number:	122769	HD catalog number
Hipparcos number:	68697	Hipparcos catalog number
V1:	8.15	Magnitude of the primary
V2:	8.78	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2003	Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BU1270

WDS 6th Orbit including measures of BU1270

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

Ephemeris of BU1270

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.140     80.9
-------------------------
2006.0     0.268    320.7
2007.0     0.270    324.6
2008.0     0.270    328.5
2009.0     0.268    332.5
2010.0     0.266    336.4
2011.0     0.263    340.5
2012.0     0.259    344.7
2013.0     0.253    349.0
2014.0     0.247    353.6
2015.0     0.240    358.4
2016.0     0.232      3.5
2017.0     0.223      9.0
2018.0     0.214     14.9
2019.0     0.204     21.4
2020.0     0.194     28.6
2021.0     0.183     36.6
2022.0     0.172     45.6
2023.0     0.162     55.8
2024.0     0.151     67.5
2025.0     0.140     80.9
2026.0     0.130     96.6
2027.0     0.120    115.0
2028.0     0.110    136.6
2029.0     0.104    161.5
2030.0     0.105    188.0
2031.0     0.113    212.3
2032.0     0.128    232.1
2033.0     0.145    247.5
2034.0     0.163    259.5
2035.0     0.180    269.2
2036.0     0.196    277.2
2037.0     0.211    284.1
2038.0     0.223    290.1
2039.0     0.235    295.5
2040.0     0.244    300.5
2041.0     0.252    305.1
2042.0     0.258    309.5
2043.0     0.263    313.7

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.