18516-6054 RST5126

 
 
18h 51m 34.80s -60 53' 44.5" P.A. 305 sep 0.1 mag 7.92,8.78 Sp F0/2IV/V dist. 162.07 pc (528.67 l.y.)
 
 
Coord 2000
18516-6054
Discov num
RST5126
Comp
Coord arcsec 2000
18 51 34.80 -60 53 44.5
Date first
1942
Date last
2017
Obs
13
Pa first
247
Pa last
294
P.A. Now (θ)
305°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
7.92
Mag sec
8.78
delta mag (ΔM)
0.86
Spectral class
F0/2IV/V (yellow-white)
Pri motion ra
+032
Sec motion ra
Pri motion dec
-035
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
294.4
Precise sep
0.095
Constellation
Pavo
HIP
92547
HD
173895
Distance
162.07
Distance ly
528.67
last precise pa
294.4
last precise sep
0.095
 
 
ORBITAL ELEMENTS
 
 
Period (P)54.16y± 3.17 Periastron (T)2011.97y± 0.36 Semi-major axis (a)0.13a± 0.005
Eccentricity (e)0.492± 0.02 Inclination (i)21.7°± 13.8 Longitude of periastron (ω)12.8°± 36.1
Node (Ω)195°± 34.5 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.140 73.0
2001 0.134 77.8
2002 0.127 83.2
2003 0.119 89.2
2004 0.111 96.0
2005 0.104 103.9
2006 0.096 113.0
2007 0.089 123.7
2008 0.082 136.2
2009 0.076 150.9
2010 0.071 167.9
2011 0.067 187.0
2012 0.066 207.5
2013 0.066 228.5
2014 0.069 248.6
2015 0.074 266.5
2016 0.081 281.7
2017 0.089 294.5
2018 0.097 305.0
2019 0.106 313.8
2020 0.115 321.3
2021 0.123 327.8
2022 0.131 333.4
2023 0.138 338.5
2024 0.145 343.0
2025 0.152 347.1
2026 0.158 350.9
2027 0.164 354.4
2028 0.169 357.7
2029 0.173 0.8
2030 0.177 3.7

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

grafico orbita





wds18516-6054a.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
18516-6054 RST5126 1991 6 223 0.2 7.92 8.78 F0/2IV/V 185134.80-605344.5
18516-6054 RST5126 2009 8 154 0.1 7.92 8.78 F0/2IV/V 185134.80-605344.5
18516-6054 RST5126 2013 9 243 0.1 7.92 8.78 F0/2IV/V 185134.80-605344.5
18516-6054 RST5126 2014 12 264 0.1 7.92 8.78 F0/2IV/V O 185134.80-605344.5
18516-6054 RST5126 2017 13 294 0.1 7.92 8.78 F0/2IV/V O 185134.80-605344.5

If you need more information about this double, apply for a data request form to the WDS.