12036-3901 SEE 143 (89 Cen)
12h 03m 36.35s -39° 00' 32.6" P.A. 332.00 sep 0.3 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 |
2021 |
|
Obs |
105 |
|
| Pa first |
225 |
|
Pa last |
331.5 |
|
P.A. Now (θ) |
300.3° |
|
| Sep first |
0.7 |
|
Sep last |
0.312 |
|
Sep. Now (ρ) |
0.261" |
|
| 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
| Name |
89 Cen |
|
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 |
|
Distance |
45.98 |
|
| Distance ly |
149.99 |
|
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 |
Notes | n | |
Reference | Tok2014a | |
| Equinox | 2000 | |
Last observation | 2013 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
62.8 |
0.778 |
| 2001 |
60.9 |
0.763 |
| 2002 |
59.0 |
0.747 |
| 2003 |
57.0 |
0.731 |
| 2004 |
54.9 |
0.713 |
| 2005 |
52.8 |
0.695 |
| 2006 |
50.4 |
0.676 |
| 2007 |
48.0 |
0.656 |
| 2008 |
45.4 |
0.634 |
| 2009 |
42.6 |
0.612 |
| 2010 |
39.6 |
0.590 |
| 2011 |
36.3 |
0.565 |
| 2012 |
32.7 |
0.540 |
| 2013 |
28.8 |
0.514 |
| 2014 |
24.5 |
0.487 |
| 2015 |
19.6 |
0.459 |
| 2016 |
14.1 |
0.430 |
| 2017 |
7.8 |
0.400 |
| 2018 |
0.4 |
0.371 |
| 2019 |
351.8 |
0.342 |
| 2020 |
341.7 |
0.314 |
| 2021 |
329.7 |
0.290 |
| 2022 |
315.8 |
0.271 |
| 2023 |
300.3 |
0.261 |
| 2024 |
284.1 |
0.259 |
| 2025 |
268.4 |
0.267 |
| 2026 |
253.9 |
0.283 |
| 2027 |
241.3 |
0.304 |
| 2028 |
230.4 |
0.329 |
| 2029 |
221.1 |
0.354 |
| 2030 |
213.0 |
0.381 |
| 2031 |
206.0 |
0.407 |
| 2032 |
199.8 |
0.432 |
| 2033 |
194.3 |
0.457 |
| 2034 |
189.3 |
0.481 |
| 2035 |
184.8 |
0.504 |
| 2036 |
180.7 |
0.527 |
| 2037 |
177.0 |
0.548 |
| 2038 |
173.5 |
0.569 |
| 2039 |
170.2 |
0.589 |
| 2040 |
167.2 |
0.609 |
| 2041 |
164.4 |
0.627 |
| 2042 |
161.7 |
0.645 |
| 2043 |
159.1 |
0.663 |
| 2044 |
156.7 |
0.680 |
| 2045 |
154.4 |
0.696 |
| 2046 |
152.2 |
0.712 |
| 2047 |
150.1 |
0.727 |
| 2048 |
148.1 |
0.741 |
| 2049 |
146.1 |
0.755 |
| 2050 |
144.3 |
0.769 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
