16118+3626 WRH  21

 
 
16H 11M 48.06S +36 25' 30.6" P.A. 66 SEP 0.1 MAG 5.63, SP K3III DIST. 207.04 PC (675.36 L.Y.)
 
 
Coord 2000
16118+3626
Discov num
WRH  21
Comp
Coord arcsec 2000
16 11 48.06 +36 25 30.6
Date first
1937
Date last
1963
Obs
3
Pa first
121
Pa last
66
P.A. Now (θ)
66°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
5.63
Mag sec
delta mag (ΔM)
Spectral class
K3III (yellow-orange)
Pri motion ra
-012
Sec motion ra
Pri motion dec
-031
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Corona Borealis
SAO
65132
HIP
79358
Tycho2
2579-02072-1
HD
145849
HR
6046
BD
BD+36 2706
Distance
207.04
Distance ly
675.36
last precise pa
65.8
last precise sep
0.09
 
 
ORBITAL ELEMENTS
 
 
Period (P)2200.77d (6.03y) Periastron (T)50760.4d (1997.853y) Semi-major axis (a)9.69m± 0.85
Eccentricity (e)0.6797 Inclination (i)91.4°± 9.7 Longitude of periastron (ω)9.73°
Node (Ω)50.5°± 6.6 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1993
label rho theta
2000-01-01 0.015 230.6
2001-01-01 0.016 230.2
2002-01-01 0.013 229.7
2003-01-01 0.006 228.4
2004-01-01 0.002 48.4
2005-01-01 0.010 231.2
2006-01-01 0.015 230.6
2007-01-01 0.016 230.2
2008-01-01 0.013 229.8
2009-01-01 0.006 228.5
2010-01-01 0.002 48.9
2011-01-01 0.010 231.3
2012-01-01 0.015 230.6
2013-01-01 0.016 230.2
2014-01-01 0.013 229.8
2015-01-01 0.006 228.6
2016-01-01 0.003 49.4
2017-01-01 0.010 231.3
2018-01-01 0.015 230.6
2019-01-01 0.016 230.2
2020-01-01 0.013 229.8
2021-01-01 0.006 228.7
2022-01-01 0.003 49.7
2023-01-01 0.009 231.3
2024-01-01 0.015 230.6
2025-01-01 0.016 230.2
2026-01-01 0.013 229.8
2027-01-01 0.007 228.7
2028-01-01 0.003 50.0
2029-01-01 0.009 231.3
2030-01-01 0.015 230.7

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