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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:41:35

Orbital Elements for SNA56AA,AB

WDS:	SNA56AA,AB	WDS ID/Discoverer
P:	10.264	Orbital period (years)
a:	0.009365	Semi-major axis (arcseconds)
i:	105.55	Inclination (degrees)
Ω:	98.23	Longitude of ascending node (degrees)
T:	2014.624	Epoch of periastron passage (year)
e:	0.4948	Eccentricity
ω:	310.5	Longitude of periastron (degrees)
Start-Year:	2020.0	Year
End-Year:	2030.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for SNA56AA,AB

Position:	165432.00-414818.8	Epoch-2000 right ascension and declination
WDS-ID:	16545-4148	WDS designation
Discoverer Code:	SNA56AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	152314	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	7.6 k	Magnitude of the primary
V2:	8.7 k	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for SNA56AA,AB

WDS 6th Orbit including measures of SNA56AA,AB

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

Ephemeris of SNA56AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.004    109.4
-------------------------
2020.0     0.010    293.8
2021.0     0.012    287.8
2022.0     0.012    282.5
2023.0     0.010    276.3
2024.0     0.005    261.7
2025.0     0.004    109.4
2026.0     0.005     83.1
2027.0     0.003     41.8
2028.0     0.004    333.4
2029.0     0.007    306.7

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.