18003+0422 WSI 65 (66 Oph)
18h 00m 15.80s +04° 22' 07.0" P.A. 216.00 sep 0.1 mag 5.00,6.50 Sp B2Ve dist. 199.6 pc (651.1 l.y.)
| Coord 2000 |
18003+0422 |
|
Discov num |
WSI 65 |
|
Comp |
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Coord arcsec 2000 |
18 00 15.80 +04 22 07.0 |
|
| Date first |
2005 |
|
Date last |
2021 |
|
Obs |
32 |
|
| Pa first |
154 |
|
Pa last |
215.5 |
|
P.A. Now (θ) |
215.5° |
|
| Sep first |
0.1 |
|
Sep last |
0.055 |
|
Sep. Now (ρ) |
0.055" |
|
| Mag pri |
5.00 |
|
Mag sec |
6.50 |
|
delta mag (ΔM) |
1.5 |
|
Spectral class |
B2Ve (blue-white) |
|
| Pri motion ra |
+002 |
|
Sec motion ra |
|
|
| Pri motion dec |
-013 |
|
Sec motion dec |
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| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
66 Oph |
|
Var name |
V2048 Oph |
|
Constellation |
Ophiuchus |
|
SAO |
123005 |
|
| HIP |
88149 |
|
Tycho2 |
0438-02741-1 |
|
Gaia DR2 |
4469791641982392192 |
|
HD |
164284 |
|
| HR |
6712 |
|
GC |
24500 |
|
BD |
BD+04 3570 |
|
Flamsteed |
66 Ophiuchi |
|
| Flamsteed name |
66 Oph |
|
Distance |
199.6 |
|
Distance ly |
651.1 |
|
ORBITAL ELEMENTS
| Period (P) | 63.9y | ± 5 |
Periastron (T) | 2067y | ± 12 |
Semi-major axis (a) | 0.175a | ± 0.017 |
| Eccentricity (e) | 0.37 | ± 0.16 |
Inclination (i) | 75° | ± 1 |
Longitude of periastron (ω) | 117° | ± 51 |
| Node (Ω) | 338.9° | ± 7.4 |
Notes | | |
Reference | Hor2020 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
29.1 |
0.039 |
| 2001 |
68.4 |
0.029 |
| 2002 |
109.7 |
0.037 |
| 2003 |
130.6 |
0.054 |
| 2004 |
141.1 |
0.073 |
| 2005 |
147.3 |
0.090 |
| 2006 |
151.7 |
0.105 |
| 2007 |
155.0 |
0.117 |
| 2008 |
157.8 |
0.126 |
| 2009 |
160.2 |
0.132 |
| 2010 |
162.6 |
0.136 |
| 2011 |
164.8 |
0.136 |
| 2012 |
167.0 |
0.135 |
| 2013 |
169.3 |
0.132 |
| 2014 |
171.8 |
0.128 |
| 2015 |
174.4 |
0.122 |
| 2016 |
177.4 |
0.116 |
| 2017 |
180.7 |
0.109 |
| 2018 |
184.5 |
0.101 |
| 2019 |
188.9 |
0.093 |
| 2020 |
194.1 |
0.085 |
| 2021 |
200.4 |
0.077 |
| 2022 |
208.0 |
0.071 |
| 2023 |
217.1 |
0.065 |
| 2024 |
227.8 |
0.061 |
| 2025 |
239.6 |
0.058 |
| 2026 |
251.8 |
0.059 |
| 2027 |
263.5 |
0.061 |
| 2028 |
273.9 |
0.066 |
| 2029 |
282.7 |
0.072 |
| 2030 |
290.1 |
0.079 |
|
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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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