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Current system
00143-2732
HDS 33


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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

00143-2732 HDS  33

 
 
00h 14m 20.22s -27° 31' 51.9" P.A. 327.20 sep 0.1 mag 7.93,8.88 Sp G5V dist. 50.89 pc (166 l.y.)
 
 
Coord 2000
00143-2732
 Discov num
HDS  33
 Comp
Coord arcsec 2000
00 14 20.22 -27 31 51.9
Date first
1991
 Date last
2020
 Obs
14
Pa first
328
 Pa last
326
 P.A. Now (θ)
327.2°
Sep first
0.1
 Sep last
0.2
 Sep. Now (ρ)
0.15"
Mag pri
7.93
 Mag sec
8.88
 delta mag (ΔM)
0.95
 Spectral class
G5V (yellow)
Pri motion ra
-028
 Sec motion ra
Pri motion dec
-145
 Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
325.8
 Precise sep
0.152
 Constellation
Sculptor
 SAO
166137
HIP
1144
 Tycho2
6419-01020-1
 Gaia DR2
2323040096922657920
 HD
1002
CD
CD-28 47
 CP
CP-28 12
 Distance
50.89
 Distance ly
166
last precise pa
325.8
 last precise sep
0.152
 
 
ORBITAL ELEMENTS
 
 
Period (P)10.22y± 0.07 Periastron (T)2013.47y± 0.04 Semi-major axis (a)0.124a± 0.002
Eccentricity (e)0.609± 0.009 Inclination (i)28.4°± 2.5 Longitude of periastron (ω)80°± 4.3
Node (Ω)35.3°± 5.3 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.159 318.3
2001 0.138 335.4
2002 0.104 1.3
2003 0.052 69.3
2004 0.081 209.2
2005 0.128 244.4
2006 0.156 263.1
2007 0.171 277.1
2008 0.176 289.6
2009 0.174 301.8
2010 0.163 315.1
2011 0.143 331.2
2012 0.113 354.2
2013 0.064 44.1
2014 0.067 193.8
2015 0.120 239.0
2016 0.151 259.5
2017 0.168 274.3
2018 0.176 286.9
2019 0.175 299.1
2020 0.166 312.0
2021 0.148 327.2
2022 0.121 348.1
2023 0.077 27.4
2024 0.053 170.0
2025 0.110 232.7
2026 0.145 255.8
2027 0.165 271.3
2028 0.175 284.2
2029 0.176 296.4
2030 0.169 309.1


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


 
  


wds00143-2732a.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
00143-2732 HDS 33 2006 2 91 0.2 7.93 8.88 G5V D 001420.22-273151.9
00143-2732 HDS 33 2008 3 116 0.2 7.93 8.88 G5V D 001420.22-273151.9
00143-2732 HDS 33 2009 5 311 0.2 7.93 8.88 G5V OD 001420.22-273151.9
00143-2732 HDS 33 2011 6 152 0.1 7.93 8.88 G5V OD 001420.22-273151.9
00143-2732 HDS 33 2012 7 218 0.1 7.93 8.88 G5V O 001420.22-273151.9
00143-2732 HDS 33 2014 9 236 0.1 7.93 8.88 G5V O 001420.22-273151.9
00143-2732 HDS 33 2015 10 256 0.1 7.93 8.88 G5V O 001420.22-273151.9
00143-2732 HDS 33 2017 11 284 0.2 7.93 8.88 G5V O 001420.22-273151.9
00143-2732 HDS 33 2018 12 295 0.2 7.93 8.88 G5V O 001420.22-273151.9
00143-2732 HDS 33 2019 13 307 0.2 7.93 8.88 G5V O 001420.22-273151.9

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