16384+3514 COU 985

 
 
16H 38M 24.13S +35 13' 34.5" P.A. 262.8 SEP 0.37 MAG 9.40,9.70 SP K2 DIST. 87.95 PC (286.89 L.Y.)
 
 
Coord 2000
16384+3514
Discov num
COU 985
Comp
Coord arcsec 2000
16 38 24.13 +35 13 34.5
Date first
1973
Date last
2010
Obs
28
Pa first
48
Pa last
70
P.A. Now (θ)
262.8°
Sep first
0.2
Sep last
0.3
Sep. Now (ρ)
0.37"
Mag pri
9.40
Mag sec
9.70
delta mag (ΔM)
0.3
Spectral class
K2 (yellow-orange)
Pri motion ra
+052
Sec motion ra
Pri motion dec
-089
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
SAO
65449
HIP
81470
Tycho2
2588-00318-1
BD
BD+35 2844
Distance
87.95
Distance ly
286.89
last precise pa
70.3
last precise sep
0.31
 
 
ORBITAL ELEMENTS
 
 
Period (P)91.1y Periastron (T)1986.55y Semi-major axis (a)0.298a
Eccentricity (e)0.327 Inclination (i)59° Longitude of periastron (ω)34.3°
Node (Ω)81.3° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.188 224.2
2001 0.203 228.7
2002 0.219 232.5
2003 0.234 235.8
2004 0.248 238.8
2005 0.262 241.4
2006 0.275 243.8
2007 0.287 246.0
2008 0.299 247.9
2009 0.309 249.8
2010 0.319 251.5
2011 0.328 253.2
2012 0.336 254.7
2013 0.344 256.2
2014 0.350 257.6
2015 0.356 259.0
2016 0.361 260.3
2017 0.365 261.6
2018 0.369 262.8
2019 0.372 264.1
2020 0.374 265.3
2021 0.375 266.5
2022 0.376 267.8
2023 0.375 269.0
2024 0.375 270.2
2025 0.373 271.4
2026 0.371 272.6
2027 0.369 273.9
2028 0.365 275.1
2029 0.362 276.4
2030 0.357 277.8

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