16450+3842 COU1284

 
 
16h 45m 02.06s +38 42' 29.6" P.A. 293.5 sep 0.12 mag 9.50,9.50 Sp F8
 
 
Coord 2000
16450+3842
Discov num
COU1284
Comp
Coord arcsec 2000
16 45 02.06 +38 42 29.6
Date first
1975
Date last
2008
Obs
14
Pa first
38
Pa last
356
P.A. Now (θ)
293.5°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.12"
Mag pri
9.50
Mag sec
9.50
delta mag (ΔM)
0
Spectral class
F8 (yellow-white)
Pri motion ra
-001
Sec motion ra
Pri motion dec
+017
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
356.1
Precise sep
0.177
Constellation
Hercules
SAO
65527
Tycho2
3070-00314-1
last precise pa
356.1
last precise sep
0.177
 
 
ORBITAL ELEMENTS
 
 
Period (P)78y Periastron (T)1964.01y Semi-major axis (a)0.19a
Eccentricity (e)0.55 Inclination (i)114.1° Longitude of periastron (ω)254.3°
Node (Ω)47.5° Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000 0.152
2001 0.148 357.5
2002 0.144 354.9
2003 0.141 352.1
2004 0.137 349.1
2005 0.133 346.0
2006 0.130 342.7
2007 0.127 339.3
2008 0.124 335.7
2009 0.121 331.9
2010 0.119 327.9
2011 0.117 323.9
2012 0.116 319.7
2013 0.115 315.4
2014 0.114 311.0
2015 0.114 306.6
2016 0.114 302.2
2017 0.114 297.8
2018 0.115 293.5
2019 0.117 289.3
2020 0.118 285.2
2021 0.120 281.2
2022 0.122 277.3
2023 0.124 273.6
2024 0.127 270.0
2025 0.129 266.5
2026 0.132 263.1
2027 0.134 259.9
2028 0.136 256.8
2029 0.137 253.7
2030 0.138 250.7

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

grafico orbita





wds16450%2B3842a.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
16450+3842 COU1284 1996 11 12 0.2 9.50 9.50 F8 O 164502.06+384229.6
16450+3842 COU1284 2008 13 356 0.2 9.50 9.50 F8 O 164502.06+384229.6

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