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 |
|
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 |
|
Date last |
2010 |
|
Obs |
29 |
|
| Pa first |
88 |
|
Pa last |
328.1 |
|
P.A. Now (θ) |
99° |
|
| Sep first |
0.1 |
|
Sep last |
0.066 |
|
Sep. Now (ρ) |
0.158" |
|
| Mag pri |
8.70 |
|
Mag sec |
8.70 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
+042 |
|
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 |
|
Constellation |
Perseus |
|
SAO |
38228 |
|
HIP |
12552 |
|
| Tycho2 |
2849-01282-1 |
|
Gaia DR2 |
336720728722268928 |
|
HD |
16656 |
|
BD |
BD+40 568 |
|
| Distance |
90.33 |
|
Distance ly |
294.66 |
|
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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