11510-0520 MCA 36 (HD 102928)
11h 51m 02.23s -05° 20' 00.0" P.A. 100.00 sep 0.1 mag 5.64, Sp K0III dist. 91.41 pc (298.18 l.y.)
Coord 2000 |
11510-0520 |
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Discov num |
MCA 36 |
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Comp |
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Coord arcsec 2000 |
11 51 02.23 -05 20 00.0 |
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Date first |
1980 |
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Date last |
2006 |
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Obs |
4 |
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Pa first |
44 |
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Pa last |
99.9 |
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P.A. Now (θ) |
99.9° |
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Sep first |
0.2 |
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Sep last |
0.085 |
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Sep. Now (ρ) |
0.085" |
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Mag pri |
5.64 |
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Mag sec |
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delta mag (ΔM) |
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Spectral class |
K0III (yellow-orange) |
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Pri motion ra |
+003 |
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Sec motion ra |
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Pri motion dec |
+000 |
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Sec motion dec |
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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 102928 |
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Constellation |
Virgo |
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SAO |
138445 |
|
HIP |
57791 |
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Tycho2 |
4938-00772-1 |
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Gaia DR2 |
3598849442025007104 |
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HD |
102928 |
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HR |
4544 |
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GC |
16220 |
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BD |
BD-04 3152 |
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FK5 |
1306 |
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Distance |
91.41 |
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Distance ly |
298.18 |
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ORBITAL ELEMENTS
Period (P) | 490.765d | |
Periastron (T) | 51667.7d (2000.337y) | |
Semi-major axis (a) | 2.4m | ± 0.3 |
Eccentricity (e) | 0.271 | |
Inclination (i) | 75.5° | ± 5.4 |
Longitude of periastron (ω) | 126.4° | |
Node (Ω) | 296.5° | ± 4.2 |
Notes | n | |
Reference | Ren2013 | |
Equinox | 2000 | |
Last observation | | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
298.1 |
0.003 |
2001-01-01 |
276.8 |
0.002 |
2002-01-01 |
142.0 |
0.001 |
2003-01-01 |
87.9 |
0.001 |
2004-01-01 |
296.4 |
0.003 |
2005-01-01 |
273.1 |
0.002 |
2006-01-01 |
136.0 |
0.001 |
2007-01-01 |
61.5 |
0.001 |
2008-01-01 |
294.8 |
0.003 |
2009-01-01 |
268.3 |
0.001 |
2010-01-01 |
131.4 |
0.002 |
2011-01-01 |
10.7 |
|
2012-01-01 |
293.3 |
0.003 |
2013-01-01 |
261.9 |
0.001 |
2014-01-01 |
127.5 |
0.002 |
2015-01-01 |
335.6 |
0.001 |
2016-01-01 |
291.7 |
0.003 |
2017-01-01 |
253.1 |
0.001 |
2018-01-01 |
124.2 |
0.002 |
2019-01-01 |
320.7 |
0.001 |
2020-01-01 |
290.1 |
0.003 |
2021-01-01 |
240.4 |
0.001 |
2022-01-01 |
121.1 |
0.002 |
2023-01-01 |
313.0 |
0.001 |
2024-01-01 |
288.5 |
0.003 |
2025-01-01 |
222.5 |
0.001 |
2026-01-01 |
118.1 |
0.002 |
2027-01-01 |
308.3 |
0.002 |
2028-01-01 |
286.7 |
0.002 |
2029-01-01 |
200.3 |
0.001 |
2030-01-01 |
114.9 |
0.002 |
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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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