20347-6319 HU 1615

 
 
20h 34m 44.16s -63 18' 42.0" P.A. 282.6 sep 0.22 mag 8.07,8.21 Sp A3V dist. 183.82 pc (599.62 l.y.)
 
 
Coord 2000
20347-6319
Discov num
HU 1615
Comp
Coord arcsec 2000
20 34 44.16 -63 18 42.0
Date first
1914
Date last
2018
Obs
17
Pa first
359
Pa last
287
P.A. Now (θ)
282.6°
Sep first
0.4
Sep last
0.2
Sep. Now (ρ)
0.22"
Mag pri
8.07
Mag sec
8.21
delta mag (ΔM)
0.14
Spectral class
A3V (white)
Pri motion ra
+031
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
287.4
Precise sep
0.199
Constellation
Pavo
SAO
254818
HIP
101543
Tycho2
9104-01084-1
Gaia DR2
82772505472
HD
195429
CP
CP-63 4590
Distance
183.82
Distance ly
599.62
last precise pa
287.4
last precise sep
0.199
 
 
ORBITAL ELEMENTS
 
 
Period (P)357.17y Periastron (T)1999.08y Semi-major axis (a)0.387a
Eccentricity (e)0.851 Inclination (i)46° Longitude of periastron (ω)263°
Node (Ω)257.5° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.043 187.9
2001 0.053 212.7
2002 0.066 228.6
2003 0.080 239.0
2004 0.093 246.5
2005 0.105 252.1
2006 0.117 256.6
2007 0.127 260.3
2008 0.137 263.4
2009 0.147 266.2
2010 0.156 268.6
2011 0.165 270.7
2012 0.173 272.7
2013 0.181 274.4
2014 0.188 276.0
2015 0.195 277.5
2016 0.202 278.9
2017 0.209 280.2
2018 0.215 281.5
2019 0.221 282.6
2020 0.227 283.7
2021 0.233 284.8
2022 0.239 285.7
2023 0.244 286.7
2024 0.250 287.6
2025 0.255 288.5
2026 0.260 289.3
2027 0.265 290.1
2028 0.270 290.9
2029 0.275 291.6
2030 0.279 292.3

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






wds20347-6319b.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
20347-6319 HU 1615 1991 13 66 0.1 8.07 8.21 A3V O 203444.16-631842.0
20347-6319 HU 1615 2008 14 86 0.1 8.07 8.21 A3V O 203444.16-631842.0
20347-6319 HU 1615 2010 15 86 0.2 8.07 8.21 A3V O 203444.16-631842.0
20347-6319 HU 1615 2014 16 101 0.2 8.07 8.21 A3V O 203444.16-631842.0

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