13535-3540 HWE  28AB (y Cen)

 
 
13h 53m 32.75s -35 39' 51.2" P.A. 316.30 sep 1.0 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
2019
Obs
80
Pa first
270
Pa last
317
P.A. Now (θ)
316.3°
Sep first
0.8
Sep last
1.0
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)
Visually invisible, K-band or other infrared star 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 2019 80 316 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
316.5
Precise sep
1.014
Other name
y Cen
Constellation
Centaurus
SAO
204955
HIP
67819
Tycho2
7291-01975-1
Gaia DR2
50715463296
HD
120987
HR
5222
GC
18761
CD
CD-35 9090
CP
CP-35 6008
Distance
52.27
Distance ly
170.5
last precise pa
316.5
last precise sep
1.014
 
 
ORBITAL ELEMENTS
 
 
Period (P)362.9985y± 15.368 Periastron (T)1958.5214y± 0.2243 Semi-major axis (a)1.4886a± 0.04375
Eccentricity (e)0.76736± 0.01353 Inclination (i)74.536°± 0.668 Longitude of periastron (ω)89.984°± 0.571
Node (Ω)113.094°± 0.644 Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation2014
label rho theta
2000 0.988 308.9
2001 0.992 309.3
2002 0.995 309.7
2003 0.998 310.1
2004 1.000 310.4
2005 1.002 310.8
2006 1.004 311.2
2007 1.006 311.5
2008 1.007 311.9
2009 1.009 312.3
2010 1.010 312.7
2011 1.011 313.0
2012 1.011 313.4
2013 1.012 313.8
2014 1.012 314.1
2015 1.012 314.5
2016 1.012 314.9
2017 1.012 315.2
2018 1.011 315.6
2019 1.010 316.0
2020 1.010 316.3
2021 1.009 316.7
2022 1.008 317.1
2023 1.007 317.4
2024 1.005 317.8
2025 1.004 318.2
2026 1.003 318.6
2027 1.001 318.9
2028 0.999 319.3
2029 0.997 319.7
2030 0.995 320.1

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






wds13535-3540c.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
13535-3540 HWE 28 AB 2017 76 316 1.0 6.27 6.38 F4V NO 135332.75-353951.2
13535-3540 HWE 28 AB 2018 77 316 1.0 6.27 6.38 F4V NO 135332.75-353951.2
13535-3540 HWE 28 AB 2019 80 317 1.0 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.