16468+0821 A  2784AB

 
 
16h 46m 46.24s +08 22' 31.6" P.A. 169.8 sep 0.39 mag 9.80,11.00 Sp G0
 
 
Coord 2000
16468+0821
Discov num
A  2784
Comp
AB
Coord arcsec 2000
16 46 46.24 +08 22 31.6
Date first
1914
Date last
1983
Obs
8
Pa first
92
Pa last
163
P.A. Now (θ)
169.8°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.39"
Mag pri
9.80
Mag sec
11.00
delta mag (ΔM)
1.2
Spectral class
G0 (yellow)
Pri motion ra
-052
Sec motion ra
Pri motion dec
+039
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
16468+0821 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 16468+0821 A 2784 AB 1914 1983 8 170 0.4 9.80 11.00 1.20 Y <===
Show 16468+0821 A 2784 AB,C 1898 2010 9 170 18.4 9.99 11.10 1.11
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
163.1
Precise sep
0.22
Constellation
Hercules
Tycho2
0962-01408-1
HD
151389
ADS
10206
last precise pa
163.1
last precise sep
0.22
 
 
ORBITAL ELEMENTS
 
 
Period (P)400.1y Periastron (T)1895.6y Semi-major axis (a)0.407a
Eccentricity (e)0.12 Inclination (i)44° Longitude of periastron (ω)276.6°
Node (Ω)139.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2017
label rho theta
2000 0.399 157.5
2001 0.399 158.1
2002 0.398 158.8
2003 0.398 159.5
2004 0.397 160.1
2005 0.396 160.8
2006 0.396 161.5
2007 0.395 162.2
2008 0.394 162.9
2009 0.394 163.5
2010 0.393 164.2
2011 0.392 164.9
2012 0.391 165.6
2013 0.390 166.3
2014 0.389 167.0
2015 0.389 167.7
2016 0.388 168.4
2017 0.387 169.1
2018 0.386 169.8
2019 0.385 170.6
2020 0.384 171.3
2021 0.383 172.0
2022 0.382 172.7
2023 0.380 173.5
2024 0.379 174.2
2025 0.378 175.0
2026 0.377 175.7
2027 0.376 176.4
2028 0.375 177.2
2029 0.374 178.0
2030 0.373 178.7

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

grafico orbita





wds16468%2B0821e.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
16468+0821 A 2784 AB 1983 8 163 0.2 9.80 11.00 G0 164646.24+082231.6

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