02415+4053 COU 1511 (HD 16656)
02h 41m 28.89s +40° 52' 50.8" P.A. 328.00 sep 0.1 mag 8.70,8.70 Sp G0 dist. 90.33 pc (294.66 l.y.)
Coord 2000 |
02415+4053 |
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Discov num |
COU1511 |
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Comp |
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Coord arcsec 2000 |
02 41 28.89 +40 52 50.8 |
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Date first |
1977 |
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Date last |
2010 |
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Obs |
29 |
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Pa first |
88 |
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Pa last |
328.1 |
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P.A. Now (θ) |
99° |
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Sep first |
0.1 |
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Sep last |
0.066 |
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Sep. Now (ρ) |
0.158" |
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Mag pri |
8.70 |
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Mag sec |
8.70 |
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delta mag (ΔM) |
0 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
+042 |
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Sec motion ra |
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Pri motion dec |
-043 |
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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 16656 |
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Constellation |
Perseus |
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SAO |
38228 |
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HIP |
12552 |
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Tycho2 |
2849-01282-1 |
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Gaia DR2 |
336720728722268928 |
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HD |
16656 |
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BD |
BD+40 568 |
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Distance |
90.33 |
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Distance ly |
294.66 |
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ORBITAL ELEMENTS
Period (P) | 22.18y | |
Periastron (T) | 1988.64y | |
Semi-major axis (a) | 0.124a | |
Eccentricity (e) | 0.474 | |
Inclination (i) | 147° | |
Longitude of periastron (ω) | 287° | |
Node (Ω) | 217.2° | |
Notes | n | |
Reference | Hrt2001b | |
Equinox | 2000 | |
Last observation | 1996 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
105.1 |
0.157 |
2001 |
97.7 |
0.158 |
2002 |
90.2 |
0.157 |
2003 |
82.7 |
0.155 |
2004 |
74.9 |
0.151 |
2005 |
66.5 |
0.145 |
2006 |
57.1 |
0.135 |
2007 |
46.1 |
0.123 |
2008 |
31.9 |
0.105 |
2009 |
11.0 |
0.083 |
2010 |
334.2 |
0.061 |
2011 |
276.7 |
0.057 |
2012 |
232.4 |
0.075 |
2013 |
205.9 |
0.093 |
2014 |
187.4 |
0.107 |
2015 |
172.7 |
0.117 |
2016 |
160.3 |
0.126 |
2017 |
149.4 |
0.134 |
2018 |
139.6 |
0.140 |
2019 |
130.6 |
0.146 |
2020 |
122.1 |
0.150 |
2021 |
114.2 |
0.154 |
2022 |
106.5 |
0.156 |
2023 |
99.0 |
0.158 |
2024 |
91.6 |
0.157 |
2025 |
84.1 |
0.156 |
2026 |
76.3 |
0.152 |
2027 |
68.1 |
0.146 |
2028 |
58.9 |
0.137 |
2029 |
48.2 |
0.125 |
2030 |
34.8 |
0.109 |
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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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