11532-1540 A 2579 (HD 103228)
11h 53m 12.60s -15° 40' 25.4" P.A. 34.00 sep 0.4 mag 9.29,8.61 Sp F0V dist. 267.38 pc (872.19 l.y.)
| Coord 2000 |
11532-1540 |
|
Discov num |
A 2579 |
|
Comp |
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Coord arcsec 2000 |
11 53 12.60 -15 40 25.4 |
|
| Date first |
1911 |
|
Date last |
2016 |
|
Obs |
39 |
|
| Pa first |
183 |
|
Pa last |
34.1 |
|
P.A. Now (θ) |
34.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.408 |
|
Sep. Now (ρ) |
0.408" |
|
| Mag pri |
9.29 |
|
Mag sec |
8.61 |
|
delta mag (ΔM) |
0.68 |
|
Spectral class |
F0V (yellow-white) |
|
| Pri motion ra |
-040 |
|
Sec motion ra |
-040 |
|
| Pri motion dec |
+012 |
|
Sec motion dec |
+012 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 103228 |
|
Constellation |
Crater |
|
SAO |
156961 |
|
HIP |
57955 |
|
| Tycho2 |
6093-00446-1 |
|
Gaia DR2 |
3571545613369919232 |
|
HD |
103228 |
|
ADS |
8332 |
|
| BD |
BD-14 3427 |
|
Distance |
267.38 |
|
Distance ly |
872.19 |
|
ORBITAL ELEMENTS
| Period (P) | 236.3y | ± 20 |
Periastron (T) | 1897.68y | ± 1.65 |
Semi-major axis (a) | 0.321a | ± 0.005 |
| Eccentricity (e) | 0.287 | ± 0.05 |
Inclination (i) | 147.9° | ± 3 |
Longitude of periastron (ω) | 160.6° | ± 15 |
| Node (Ω) | 17.8° | ± 5 |
Notes | n | |
Reference | Doc2016d | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
47.0 |
0.390 |
| 2001 |
46.2 |
0.392 |
| 2002 |
45.4 |
0.393 |
| 2003 |
44.6 |
0.394 |
| 2004 |
43.7 |
0.396 |
| 2005 |
42.9 |
0.397 |
| 2006 |
42.1 |
0.398 |
| 2007 |
41.3 |
0.399 |
| 2008 |
40.5 |
0.400 |
| 2009 |
39.7 |
0.401 |
| 2010 |
38.9 |
0.402 |
| 2011 |
38.2 |
0.403 |
| 2012 |
37.4 |
0.404 |
| 2013 |
36.6 |
0.405 |
| 2014 |
35.8 |
0.405 |
| 2015 |
35.1 |
0.406 |
| 2016 |
34.3 |
0.407 |
| 2017 |
33.5 |
0.407 |
| 2018 |
32.7 |
0.408 |
| 2019 |
32.0 |
0.408 |
| 2020 |
31.2 |
0.408 |
| 2021 |
30.5 |
0.409 |
| 2022 |
29.7 |
0.409 |
| 2023 |
28.9 |
0.409 |
| 2024 |
28.2 |
0.409 |
| 2025 |
27.4 |
0.409 |
| 2026 |
26.6 |
0.409 |
| 2027 |
25.9 |
0.409 |
| 2028 |
25.1 |
0.409 |
| 2029 |
24.4 |
0.409 |
| 2030 |
23.6 |
0.408 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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