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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:47:17

Orbital Elements for B2530

WDS:	B2530	WDS ID/Discoverer
P:	34.800	Orbital period (years)
a:	0.428	Semi-major axis (arcseconds)
i:	85.4	Inclination (degrees)
Ω:	330.8	Longitude of ascending node (degrees)
T:	2010.110	Epoch of periastron passage (year)
e:	0.27	Eccentricity
ω:	341.9	Longitude of periastron (degrees)
Start-Year:	2008.0	Year
End-Year:	2042.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B2530

Position:	092746.78-060416.4	Epoch-2000 right ascension and declination
WDS-ID:	09278-0604	WDS designation
Discoverer Code:	B2530	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	81809	HD catalog number
Hipparcos number:	46404	Hipparcos catalog number
V1:	5.63	Magnitude of the primary
V2:	7.52	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for B2530

WDS 6th Orbit including measures of B2530

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

Ephemeris of B2530

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.447    147.7
-------------------------
2008.0     0.183    323.9
2009.0     0.248    327.1
2010.0     0.293    329.1
2011.0     0.315    330.7
2012.0     0.312    332.1
2013.0     0.285    333.8
2014.0     0.240    335.9
2015.0     0.183    339.2
2016.0     0.117    346.0
2017.0     0.053     10.0
2018.0     0.048    103.1
2019.0     0.111    131.8
2020.0     0.178    139.2
2021.0     0.243    142.6
2022.0     0.303    144.6
2023.0     0.357    145.9
2024.0     0.405    146.9
2025.0     0.447    147.7
2026.0     0.480    148.4
2027.0     0.507    149.0
2028.0     0.525    149.6
2029.0     0.535    150.1
2030.0     0.536    150.6
2031.0     0.528    151.1
2032.0     0.512    151.6
2033.0     0.486    152.2
2034.0     0.450    152.9
2035.0     0.406    153.7
2036.0     0.352    154.7
2037.0     0.289    156.2
2038.0     0.218    158.5
2039.0     0.140    163.2
2040.0     0.060    180.7
2041.0     0.045    291.1

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.