17533-3444 BU 1123

17h 53m 19.58s -34 43' 50.9" P.A. 297.3 sep 0.21 mag 6.86,6.92 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)
297.3°
Sep first
0.6
Sep last
0.3
Sep. Now (ρ)
0.21"
Mag pri
6.86
Mag sec
6.92
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

Precise pa
262.5
Precise sep
0.343
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)676.3y Periastron (T)1960.7y Semi-major axis (a)0.543a
Eccentricity (e)0.704 Inclination (i)38.3° Longitude of periastron (ω)115.9°
Node (Ω)38.9° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2015

label rho theta
2000 0.292 249.0
2001 0.295 250.0
2002 0.299 251.0
2003 0.302 251.9
2004 0.305 252.9
2005 0.308 253.8
2006 0.312 254.7
2007 0.315 255.6
2008 0.318 256.5
2009 0.321 257.3
2010 0.324 258.2
2011 0.327 259.0
2012 0.330 259.8
2013 0.333 260.6
2014 0.336 261.4
2015 0.339 262.2
2016 0.342 262.9
2017 0.345 263.7
2018 0.348 264.4
2019 0.350 265.1
2020 0.353 265.8
2021 0.356 266.5
2022 0.359 267.2
2023 0.362 267.9
2024 0.364 268.5
2025 0.367 269.2
2026 0.370 269.8
2027 0.373 270.5
2028 0.375 271.1
2029 0.378 271.7
2030 0.381 272.3

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

grafico orbita





wds17533-3444e.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
17533-3444 BU 1123 1991 40 58 0.3 6.86 6.92 B8V NO 175319.58-344350.9
17533-3444 BU 1123 2009 41 257 0.3 6.86 6.92 B8V NO 175319.58-344350.9
17533-3444 BU 1123 2015 43 263 0.3 6.86 6.92 B8V NO 175319.58-344350.9

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