16450+3842 COU 1284
16h 45m 02.06s +38° 42' 29.6" P.A. 347.00 sep 0.1 mag 9.50,9.50 Sp F8
| Coord 2000 |
16450+3842 |
|
Discov num |
COU1284 |
|
Comp |
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Coord arcsec 2000 |
16 45 02.06 +38 42 29.6 |
|
| Date first |
1975 |
|
Date last |
2014 |
|
Obs |
16 |
|
| Pa first |
38 |
|
Pa last |
346.9 |
|
P.A. Now (θ) |
346.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.146 |
|
Sep. Now (ρ) |
0.146" |
|
| Mag pri |
9.50 |
|
Mag sec |
9.50 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
-001 |
|
Sec motion ra |
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|
| Pri motion dec |
+017 |
|
Sec motion dec |
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| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
Tycho2 |
3070-00314-1 |
|
Gaia DR2 |
1352544167118107264 |
|
ORBITAL ELEMENTS
| Period (P) | 78y | |
Periastron (T) | 1964.01y | |
Semi-major axis (a) | 0.19a | |
| Eccentricity (e) | 0.55 | |
Inclination (i) | 114.1° | |
Longitude of periastron (ω) | 254.3° | |
| Node (Ω) | 47.5° | |
Notes | | |
Reference | Cou1999b | |
| Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
|
0.152 |
| 2001 |
357.5 |
0.148 |
| 2002 |
354.9 |
0.144 |
| 2003 |
352.1 |
0.141 |
| 2004 |
349.1 |
0.137 |
| 2005 |
346.0 |
0.133 |
| 2006 |
342.7 |
0.130 |
| 2007 |
339.3 |
0.127 |
| 2008 |
335.7 |
0.124 |
| 2009 |
331.9 |
0.121 |
| 2010 |
327.9 |
0.119 |
| 2011 |
323.9 |
0.117 |
| 2012 |
319.7 |
0.116 |
| 2013 |
315.4 |
0.115 |
| 2014 |
311.0 |
0.114 |
| 2015 |
306.6 |
0.114 |
| 2016 |
302.2 |
0.114 |
| 2017 |
297.8 |
0.114 |
| 2018 |
293.5 |
0.115 |
| 2019 |
289.3 |
0.117 |
| 2020 |
285.2 |
0.118 |
| 2021 |
281.2 |
0.120 |
| 2022 |
277.3 |
0.122 |
| 2023 |
273.6 |
0.124 |
| 2024 |
270.0 |
0.127 |
| 2025 |
266.5 |
0.129 |
| 2026 |
263.1 |
0.132 |
| 2027 |
259.9 |
0.134 |
| 2028 |
256.8 |
0.136 |
| 2029 |
253.7 |
0.137 |
| 2030 |
250.7 |
0.138 |
|
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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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