02433+1926 BAG 20 (HD 16909)
02h 43m 20.92s +19° 25' 45.2" P.A. 211.00 sep 0.1 mag 8.20,11.30 Sp K3.5Vk dist. 18.88 pc (61.59 l.y.)
Coord 2000 |
02433+1926 |
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Discov num |
BAG 20 |
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Comp |
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Coord arcsec 2000 |
02 43 20.92 +19 25 45.2 |
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Date first |
2001 |
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Date last |
2019 |
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Obs |
4 |
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Pa first |
20 |
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Pa last |
210.9 |
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P.A. Now (θ) |
210.9° |
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Sep first |
0.1 |
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Sep last |
0.142 |
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Sep. Now (ρ) |
0.142" |
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Mag pri |
8.20 |
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Mag sec |
11.30 |
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delta mag (ΔM) |
3.1 |
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Spectral class |
K3.5Vk (yellow-orange) |
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Pri motion ra |
+435 |
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Sec motion ra |
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Pri motion dec |
-016 |
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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 16909 |
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Constellation |
Aries |
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SAO |
93072 |
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HIP |
12709 |
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Tycho2 |
1226-00710-1 |
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HD |
16909 |
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GC |
3272 |
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GL |
Gl 106 |
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BD |
BD+18 339 |
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Distance |
18.88 |
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Distance ly |
61.59 |
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ORBITAL ELEMENTS
Period (P) | 1214d (3.32y) | |
Periastron (T) | 44185.5d (1979.852y) | |
Semi-major axis (a) | 31.24m | ± 6.15 |
Eccentricity (e) | 0.521 | |
Inclination (i) | 76.48° | ± 6.25 |
Longitude of periastron (ω) | 117° | |
Node (Ω) | 27.39° | ± 11.56 |
Notes | n | |
Reference | HIP1997d | |
Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
208.8 |
0.019 |
2001-01-01 |
328.5 |
0.012 |
2002-01-01 |
16.3 |
0.034 |
2003-01-01 |
63.8 |
0.006 |
2004-01-01 |
265.7 |
0.011 |
2005-01-01 |
9.5 |
0.029 |
2006-01-01 |
29.1 |
0.027 |
2007-01-01 |
228.3 |
0.017 |
2008-01-01 |
358.3 |
0.021 |
2009-01-01 |
22.3 |
0.035 |
2010-01-01 |
210.4 |
0.020 |
2011-01-01 |
332.4 |
0.013 |
2012-01-01 |
16.8 |
0.034 |
2013-01-01 |
86.9 |
0.004 |
2014-01-01 |
271.1 |
0.010 |
2015-01-01 |
10.2 |
0.029 |
2016-01-01 |
30.0 |
0.026 |
2017-01-01 |
230.4 |
0.017 |
2018-01-01 |
359.6 |
0.022 |
2019-01-01 |
22.8 |
0.035 |
2020-01-01 |
211.9 |
0.020 |
2021-01-01 |
335.9 |
0.013 |
2022-01-01 |
17.3 |
0.035 |
2023-01-01 |
128.6 |
0.004 |
2024-01-01 |
276.8 |
0.010 |
2025-01-01 |
10.8 |
0.030 |
2026-01-01 |
30.9 |
0.025 |
2027-01-01 |
232.6 |
0.016 |
2028-01-01 |
0.9 |
0.023 |
2029-01-01 |
23.3 |
0.034 |
2030-01-01 |
213.4 |
0.020 |
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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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