13535-3540 HWE  28AB (y Cen)

 
 
13h 53m 32.75s -35 39' 51.2" P.A. 315.4 sep 1.01 mag 6.27,6.38 Sp F4V dist. 52.27 pc (170.5 l.y.)
 
 
Coord 2000
13535-3540
Discov num
HWE  28
Comp
AB
Coord arcsec 2000
13 53 32.75 -35 39 51.2
Date first
1876
Date last
2016
Obs
71
Pa first
270
Pa last
317
P.A. Now (θ)
315.4°
Sep first
0.8
Sep last
1.1
Sep. Now (ρ)
1.01"
Mag pri
6.27
Mag sec
6.38
delta mag (ΔM)
0.11
Spectral class
F4V (yellow-white)
Pri motion ra
-086
Sec motion ra
-086
Pri motion dec
-021
Sec motion dec
-021
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
13535-3540 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show y Cen 204955 13535-3540 HWE 28 AB 1876 2016 71 315 1.0 6.27 6.38 0.11 Y <===
Show 204955 13535-3540 BU 1108 AC 1889 2008 11 150 28.3 6.27 12.30 6.03
Show 204955 13535-3540 I 1618 AD 1927 1999 3 133 38.0 6.27 14.80 8.53
Show 204955 13535-3540 H 5 124 AE 1889 2016 18 7 68.3 6.27 8.65 2.38
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
316.7
Precise sep
1.11
Other name
y Cen
Constellation
Centaurus
SAO
204955
HIP
67819
Tycho2
7291-01975-1
HD
120987
HR
5222
GC
18761
CD
CD-35 9090
CP
CP-35 6008
Distance
52.27
Distance ly
170.5
last precise pa
316.7
last precise sep
1.11
 
 
ORBITAL ELEMENTS
 
 
Period (P)373y Periastron (T)1958.57y Semi-major axis (a)1.519a
Eccentricity (e)0.775 Inclination (i)74.2° Longitude of periastron (ω)90.7°
Node (Ω)112.3° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2011
label rho theta
2000 0.984 308.9
2001 0.987 309.3
2002 0.990 309.7
2003 0.993 310.1
2004 0.995 310.5
2005 0.998 310.9
2006 1.000 311.3
2007 1.002 311.7
2008 1.003 312.0
2009 1.004 312.4
2010 1.006 312.8
2011 1.007 313.2
2012 1.007 313.6
2013 1.008 313.9
2014 1.008 314.3
2015 1.008 314.7
2016 1.009 315.1
2017 1.008 315.4
2018 1.008 315.8
2019 1.008 316.2
2020 1.007 316.6
2021 1.007 316.9
2022 1.006 317.3
2023 1.005 317.7
2024 1.004 318.1
2025 1.003 318.5
2026 1.001 318.8
2027 1.000 319.2
2028 0.998 319.6
2029 0.997 320.0
2030 0.995 320.4

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

grafico orbita





wds13535-3540b.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
13535-3540 HWE 28 AB 2006 59 311 1.0 6.27 6.38 F4V NOD 135332.82-353951.1
13535-3540 HWE 28 AB 2009 60 312 1.0 6.27 6.38 F4V NOD 135332.82-353951.1
13535-3540 HWE 28 AB 2011 62 313 1.0 6.27 6.38 F4V NOD 135332.75-353951.2
13535-3540 HWE 28 AB 2014 64 314 1.0 6.27 6.38 F4V NO 135332.75-353951.2
13535-3540 HWE 28 AB 2016 71 317 1.1 6.27 6.38 F4V NO 135332.75-353951.2

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