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 |
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Discov num |
A 2579 |
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Comp |
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Coord arcsec 2000 |
11 53 12.60 -15 40 25.4 |
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Date first |
1911 |
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Date last |
2016 |
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Obs |
39 |
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Pa first |
183 |
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Pa last |
34.1 |
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P.A. Now (θ) |
34.1° |
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Sep first |
0.2 |
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Sep last |
0.408 |
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Sep. Now (ρ) |
0.408" |
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Mag pri |
9.29 |
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Mag sec |
8.61 |
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delta mag (ΔM) |
0.68 |
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Spectral class |
F0V (yellow-white) |
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Pri motion ra |
-040 |
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Sec motion ra |
-040 |
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Pri motion dec |
+012 |
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Sec motion dec |
+012 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 103228 |
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Constellation |
Crater |
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SAO |
156961 |
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HIP |
57955 |
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Tycho2 |
6093-00446-1 |
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Gaia DR2 |
3571545613369919232 |
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HD |
103228 |
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ADS |
8332 |
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BD |
BD-14 3427 |
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Distance |
267.38 |
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Distance ly |
872.19 |
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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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