16413+3006 A   349

 
 
16H 41M 17.67S +30 06' 36.2" P.A. 128.9 SEP 0.67 MAG 10.66,10.91 SP K6
 
 
Coord 2000
16413+3006
Discov num
A   349
Comp
Coord arcsec 2000
16 41 17.67 +30 06 36.2
Date first
1902
Date last
2010
Obs
63
Pa first
112
Pa last
136
P.A. Now (θ)
128.9°
Sep first
0.6
Sep last
0.7
Sep. Now (ρ)
0.67"
Mag pri
10.66
Mag sec
10.91
delta mag (ΔM)
0.25
Spectral class
K6 (yellow-orange)
Pri motion ra
-043
Sec motion ra
-043
Pri motion dec
+092
Sec motion dec
+092
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
HIP
81694
Tycho2
2582-01818-1
ADS
10158
last precise pa
135.5
last precise sep
0.665
 
 
ORBITAL ELEMENTS
 
 
Period (P)135.69y Periastron (T)1951.28y Semi-major axis (a)0.435a
Eccentricity (e)0.532 Inclination (i)165.1° Longitude of periastron (ω)8.5°
Node (Ω)316.1° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.627 146.3
2001 0.631 145.3
2002 0.635 144.2
2003 0.638 143.2
2004 0.642 142.2
2005 0.645 141.2
2006 0.648 140.3
2007 0.651 139.3
2008 0.653 138.3
2009 0.656 137.4
2010 0.658 136.4
2011 0.659 135.5
2012 0.661 134.5
2013 0.662 133.6
2014 0.664 132.6
2015 0.664 131.7
2016 0.665 130.8
2017 0.666 129.9
2018 0.666 128.9
2019 0.666 128.0
2020 0.666 127.1
2021 0.665 126.1
2022 0.665 125.2
2023 0.664 124.3
2024 0.663 123.4
2025 0.661 122.4
2026 0.660 121.5
2027 0.658 120.5
2028 0.656 119.6
2029 0.654 118.6
2030 0.652 117.7

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic