16584+3943 COU1289

 
 
16h 58m 22.85s +39 42' 36.8" P.A. 279.6 sep 0.01 mag 8.40,8.40 Sp G0 dist. 113.64 pc (370.69 l.y.)
 
 
Coord 2000
16584+3943
Discov num
COU1289
Comp
Coord arcsec 2000
16 58 22.85 +39 42 36.8
Date first
1975
Date last
2010
Obs
40
Pa first
71
Pa last
251
P.A. Now (θ)
279.6°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.01"
Mag pri
8.40
Mag sec
8.40
delta mag (ΔM)
0
Spectral class
G0 (yellow)
Pri motion ra
+027
Sec motion ra
Pri motion dec
-125
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
251.1
Precise sep
0.123
Constellation
Hercules
SAO
65690
HIP
83064
Tycho2
3075-01080-1
HD
153527
BD
BD+39 3062
Distance
113.64
Distance ly
370.69
last precise pa
251.1
last precise sep
0.123
 
 
ORBITAL ELEMENTS
 
 
Period (P)16.09y Periastron (T)2001.07y Semi-major axis (a)0.075a
Eccentricity (e)0.753 Inclination (i)113° Longitude of periastron (ω)154.3°
Node (Ω)63.2° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.040 46.1
2001 0.015 262.8
2002 0.018 165.9
2003 0.036 109.3
2004 0.058 94.1
2005 0.077 86.9
2006 0.093 82.4
2007 0.105 79.1
2008 0.114 76.5
2009 0.120 74.1
2010 0.123 71.9
2011 0.122 69.8
2012 0.118 67.5
2013 0.109 65.0
2014 0.095 61.9
2015 0.074 57.4
2016 0.043 47.8
2017 0.012 279.6
2018 0.017 175.5
2019 0.034 111.7
2020 0.056 95.0
2021 0.076 87.4
2022 0.092 82.8
2023 0.104 79.4
2024 0.113 76.7
2025 0.120 74.3
2026 0.123 72.1
2027 0.122 70.0
2028 0.118 67.7
2029 0.110 65.3
2030 0.097 62.2

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

grafico orbita





wds16584%2B3943b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16584+3943 COU1289 2005 35 266 0.1 8.40 8.40 G0 NO 165822.85+394236.8
16584+3943 COU1289 2010 36 251 0.1 8.40 8.40 G0 NOD 165822.85+394236.8

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