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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:12:26

Orbital Elements for B1215

WDS:	B1215	WDS ID/Discoverer
P:	59.820	Orbital period (years)
a:	0.242	Semi-major axis (arcseconds)
i:	50.6	Inclination (degrees)
Ω:	57.2	Longitude of ascending node (degrees)
T:	1995.378	Epoch of periastron passage (year)
e:	0.636	Eccentricity
ω:	133.8	Longitude of periastron (degrees)
Start-Year:	1996.0	Year
End-Year:	2054.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B1215

Position:	123910.45-402207.3	Epoch-2000 right ascension and declination
WDS-ID:	12392-4022	WDS designation
Discoverer Code:	B1215	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	109961	HD catalog number
Hipparcos number:	61729	Hipparcos catalog number
V1:	9.15	Magnitude of the primary
V2:	9.84	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2011	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for B1215

WDS 6th Orbit including measures of B1215

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

Ephemeris of B1215

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.327     23.2
-------------------------
1996.0     0.086    220.9
1997.0     0.103    240.3
1998.0     0.114    254.9
1999.0     0.121    267.4
2000.0     0.127    278.6
2001.0     0.132    288.9
2002.0     0.138    298.3
2003.0     0.145    306.9
2004.0     0.153    314.7
2005.0     0.161    321.7
2006.0     0.170    328.0
2007.0     0.180    333.6
2008.0     0.190    338.7
2009.0     0.200    343.3
2010.0     0.210    347.4
2011.0     0.220    351.1
2012.0     0.229    354.6
2013.0     0.239    357.7
2014.0     0.249      0.6
2015.0     0.258      3.3
2016.0     0.267      5.8
2017.0     0.275      8.2
2018.0     0.283     10.4
2019.0     0.291     12.5
2020.0     0.298     14.5
2021.0     0.305     16.4
2022.0     0.311     18.2
2023.0     0.317     19.9
2024.0     0.323     21.6
2025.0     0.327     23.2
2026.0     0.332     24.8
2027.0     0.335     26.4
2028.0     0.338     27.9
2029.0     0.340     29.4
2030.0     0.342     30.9
2031.0     0.343     32.4
2032.0     0.344     33.8
2033.0     0.343     35.3
2034.0     0.342     36.8
2035.0     0.340     38.2
2036.0     0.337     39.7
2037.0     0.333     41.3
2038.0     0.328     42.9
2039.0     0.323     44.5
2040.0     0.316     46.2
2041.0     0.308     48.0
2042.0     0.298     49.8
2043.0     0.288     51.8
2044.0     0.276     54.0
2045.0     0.262     56.4
2046.0     0.247     59.1
2047.0     0.229     62.1
2048.0     0.210     65.7
2049.0     0.188     70.1
2050.0     0.163     75.7
2051.0     0.136     83.5
2052.0     0.106     95.5
2053.0     0.078    116.4

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.