17533-3444 BU 1123

 
 
17H 53M 19.58S -34 43' 50.9" P.A. 299.8 SEP 0.22 MAG 6.92,6.86 SP B8V DIST. 271.74 PC (886.42 L.Y.)
 
 
Coord 2000
17533-3444
Discov num
BU 1123
Comp
Coord arcsec 2000
17 53 19.58 -34 43 50.9
Date first
1889
Date last
2015
Obs
43
Pa first
213
Pa last
263
P.A. Now (θ)
299.8°
Sep first
0.6
Sep last
0.3
Sep. Now (ρ)
0.22"
Mag pri
6.92
Mag sec
6.86
delta mag (ΔM)
0.06
Spectral class
B8V (blue-white)
Pri motion ra
+005
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Scorpius
SAO
209411
HIP
87567
Tycho2
7386-00732-1
HD
162586
HR
6657
CD
CD-3412200
CP
CP-34 7266
Distance
271.74
Distance ly
886.42
last precise pa
262.5
last precise sep
0.343
 
 
ORBITAL ELEMENTS
 
 
Period (P)200y Periastron (T)1968.4y Semi-major axis (a)0.34a
Eccentricity (e)0.33 Inclination (i)55.3° Longitude of periastron (ω)139.5°
Node (Ω)39.6° Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation1989
label rho theta
2000 0.232 257.8
2001 0.230 259.9
2002 0.228 262.0
2003 0.226 264.2
2004 0.225 266.4
2005 0.223 268.6
2006 0.221 270.9
2007 0.220 273.2
2008 0.218 275.5
2009 0.217 277.9
2010 0.216 280.3
2011 0.215 282.7
2012 0.214 285.1
2013 0.214 287.5
2014 0.214 290.0
2015 0.214 292.4
2016 0.214 294.9
2017 0.214 297.3
2018 0.215 299.8
2019 0.216 302.2
2020 0.217 304.6
2021 0.218 307.0
2022 0.219 309.3
2023 0.221 311.6
2024 0.223 313.9
2025 0.225 316.1
2026 0.227 318.3
2027 0.230 320.4
2028 0.232 322.5
2029 0.235 324.6
2030 0.238 326.6

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