02159+0638 A 2013 (HD 13959)
02h 15m 53.38s +06° 37' 34.9" P.A. 116.00 sep 0.4 mag 9.84,9.79 Sp K2 dist. 35.93 pc (117.2 l.y.)
Coord 2000 |
02159+0638 |
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Discov num |
A 2013 |
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Comp |
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Coord arcsec 2000 |
02 15 53.38 +06 37 34.9 |
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Date first |
1909 |
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Date last |
2021 |
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Obs |
64 |
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Pa first |
146 |
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Pa last |
115.8 |
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P.A. Now (θ) |
111° |
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Sep first |
0.2 |
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Sep last |
0.399 |
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Sep. Now (ρ) |
0.43" |
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Mag pri |
9.84 |
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Mag sec |
9.79 |
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delta mag (ΔM) |
0.05 |
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Spectral class |
K2 (yellow-orange) |
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Pri motion ra |
-111 |
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Sec motion ra |
-111 |
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Pri motion dec |
-056 |
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Sec motion dec |
-056 |
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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 13959 |
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Constellation |
Cetus |
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SAO |
110435 |
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HIP |
10552 |
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Tycho2 |
0044-01047-1 |
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Gaia DR2 |
2520246127362593920 |
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HD |
13959 |
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ADS |
1729 |
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BD |
BD+05 307 |
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Distance |
35.93 |
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Distance ly |
117.2 |
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ORBITAL ELEMENTS
Period (P) | 34.66y | ± 0.15 |
Periastron (T) | 2005.69y | ± 0.2 |
Semi-major axis (a) | 0.346a | ± 0.002 |
Eccentricity (e) | 0.593 | ± 0.01 |
Inclination (i) | 112.3° | ± 2 |
Longitude of periastron (ω) | 137.6° | ± 3 |
Node (Ω) | 91.8° | ± 2 |
Notes | n | |
Reference | Doc2006i | |
Equinox | 2000 | |
Last observation | 2004 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
88.4 |
0.353 |
2001 |
84.9 |
0.306 |
2002 |
80.0 |
0.248 |
2003 |
71.3 |
0.176 |
2004 |
49.0 |
0.096 |
2005 |
328.1 |
0.066 |
2006 |
282.7 |
0.130 |
2007 |
265.8 |
0.165 |
2008 |
252.3 |
0.166 |
2009 |
237.4 |
0.153 |
2010 |
219.5 |
0.140 |
2011 |
199.1 |
0.135 |
2012 |
179.3 |
0.144 |
2013 |
162.9 |
0.163 |
2014 |
150.5 |
0.190 |
2015 |
141.4 |
0.219 |
2016 |
134.5 |
0.251 |
2017 |
129.1 |
0.281 |
2018 |
124.8 |
0.311 |
2019 |
121.2 |
0.340 |
2020 |
118.1 |
0.366 |
2021 |
115.5 |
0.390 |
2022 |
113.1 |
0.412 |
2023 |
111.0 |
0.430 |
2024 |
109.0 |
0.446 |
2025 |
107.1 |
0.459 |
2026 |
105.4 |
0.468 |
2027 |
103.6 |
0.474 |
2028 |
102.0 |
0.476 |
2029 |
100.3 |
0.473 |
2030 |
98.6 |
0.466 |
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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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