12036-3901 SEE 143 (89 Cen)

 
 
12h 03m 36.35s -39 00' 32.6" P.A. 0.4 sep 0.37 mag 7.05,7.65 Sp F7V dist. 45.98 pc (149.99 l.y.)
 
 
Coord 2000
12036-3901
Discov num
SEE 143
Comp
Coord arcsec 2000
12 03 36.35 -39 00 32.6
Date first
1897
Date last
2017
Obs
95
Pa first
225
Pa last
7
P.A. Now (θ)
0.4°
Sep first
0.7
Sep last
0.4
Sep. Now (ρ)
0.37"
Mag pri
7.05
Mag sec
7.65
delta mag (ΔM)
0.6
Spectral class
F7V (yellow-white)
Pri motion ra
-383
Sec motion ra
-383
Pri motion dec
-039
Sec motion dec
-039
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
6.9
Precise sep
0.413
Name
89 Cen
Cdsa2 id
SEE 143
Constellation
Centaurus
SAO
203084
HIP
58799
Tycho2
7755-00116-1
HD
104747
GC
16471
CD
CD-38 7479
CP
CP-38 4972
Flamsteed
89 Centauri
Flamsteed name
89 Cen
Ra deg
12.060097222222224
De deg
-39.009055555555555
Distance
45.98
Distance ly
149.99
last precise pa
6.9
last precise sep
0.413
 
 
ORBITAL ELEMENTS
 
 
Period (P)111y± 1.4 Periastron (T)1913y± 1.3 Semi-major axis (a)0.673a± 0.009
Eccentricity (e)0.579± 0.012 Inclination (i)155.3°± 2.1 Longitude of periastron (ω)285.4°± 7.1
Node (Ω)211°± 8.5 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 0.778 62.8
2001 0.763 60.9
2002 0.747 59.0
2003 0.731 57.0
2004 0.713 54.9
2005 0.695 52.8
2006 0.676 50.4
2007 0.656 48.0
2008 0.634 45.4
2009 0.612 42.6
2010 0.590 39.6
2011 0.565 36.3
2012 0.540 32.7
2013 0.514 28.8
2014 0.487 24.5
2015 0.459 19.6
2016 0.430 14.1
2017 0.400 7.8
2018 0.371 0.4
2019 0.342 351.8
2020 0.314 341.7
2021 0.290 329.7
2022 0.271 315.8
2023 0.261 300.3
2024 0.259 284.1
2025 0.267 268.4
2026 0.283 253.9
2027 0.304 241.3
2028 0.329 230.4
2029 0.354 221.1
2030 0.381 213.0

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

grafico orbita





wds12036-3901b.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
12036-3901 SEE 143 1998 82 65 0.8 7.05 7.65 F7V NOD 120336.35-390032.6
12036-3901 SEE 143 2009 84 41 0.6 7.05 7.65 F7V NOD 120336.35-390032.6
12036-3901 SEE 143 2010 87 39 0.6 7.05 7.65 F7V NOD 120336.35-390032.6
12036-3901 SEE 143 2011 87 36 0.6 7.05 7.65 F7V NOD 120336.35-390032.6
12036-3901 SEE 143 2013 88 28 0.5 7.05 7.65 F7V NOD 120336.35-390032.6
12036-3901 SEE 143 2014 90 25 0.5 7.05 7.65 F7V NO 120336.35-390032.6
12036-3901 SEE 143 2017 95 7 0.4 7.05 7.65 F7V NO 120336.35-390032.6

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