17471+4737 CHR  64

 
 
17h 47m 08.05s +47 36' 44.0" P.A. 155.6 sep 0.47 mag 6.56,9.85 Sp A2V dist. 116.82 pc (381.07 l.y.)
 
 
Coord 2000
17471+4737
Discov num
CHR  64
Comp
Coord arcsec 2000
17 47 08.05 +47 36 44.0
Date first
1985
Date last
2011
Obs
19
Pa first
111
Pa last
153
P.A. Now (θ)
155.6°
Sep first
0.1
Sep last
0.4
Sep. Now (ρ)
0.47"
Mag pri
6.56
Mag sec
9.85
delta mag (ΔM)
3.29
Spectral class
A2V (white)
Pri motion ra
-024
Sec motion ra
Pri motion dec
+004
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
152.6
Precise sep
0.407
Constellation
Hercules
SAO
46954
HIP
87045
Tycho2
3514-00620-1
HD
162132
HR
6641
BD
BD+47 2537
Distance
116.82
Distance ly
381.07
last precise pa
152.6
last precise sep
0.407
 
 
ORBITAL ELEMENTS
 
 
Period (P)200.9y Periastron (T)1948.47y Semi-major axis (a)0.451a
Eccentricity (e)0.247 Inclination (i)73.4° Longitude of periastron (ω)186.1°
Node (Ω)164.9° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.300 143.0
2001 0.311 144.0
2002 0.322 145.0
2003 0.332 146.0
2004 0.343 146.9
2005 0.353 147.7
2006 0.363 148.5
2007 0.372 149.2
2008 0.382 150.0
2009 0.391 150.6
2010 0.400 151.3
2011 0.409 151.9
2012 0.418 152.5
2013 0.427 153.0
2014 0.435 153.6
2015 0.443 154.1
2016 0.450 154.6
2017 0.458 155.1
2018 0.465 155.6
2019 0.472 156.0
2020 0.479 156.5
2021 0.485 156.9
2022 0.492 157.3
2023 0.498 157.8
2024 0.503 158.2
2025 0.509 158.6
2026 0.514 158.9
2027 0.519 159.3
2028 0.523 159.7
2029 0.528 160.1
2030 0.532 160.4

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

grafico orbita





wds17471%2B4737a.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
17471+4737 CHR 64 1997 14 140 0.3 6.56 9.85 A2V N 174708.05+473644.0
17471+4737 CHR 64 2002 15 144 0.3 6.56 9.85 A2V N D 174708.05+473644.0
17471+4737 CHR 64 2009 17 151 0.4 6.56 9.85 A2V N D 174708.05+473644.0
17471+4737 CHR 64 2011 19 153 0.4 6.56 9.85 A2V NO 174708.05+473644.0

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