18224+4545 A 700
18h 22m 24.41s +45° 44' 37.8" P.A. 128.00 sep 0.6 mag 10.36,10.45 Sp G0
| Coord 2000 |
18224+4545 |
|
Discov num |
A 700 |
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Comp |
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Coord arcsec 2000 |
18 22 24.41 +45 44 37.8 |
|
| Date first |
1904 |
|
Date last |
2014 |
|
Obs |
15 |
|
| Pa first |
322 |
|
Pa last |
128.4 |
|
P.A. Now (θ) |
128.4° |
|
| Sep first |
0.5 |
|
Sep last |
0.639 |
|
Sep. Now (ρ) |
0.639" |
|
| Mag pri |
10.36 |
|
Mag sec |
10.45 |
|
delta mag (ΔM) |
0.09 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
+024 |
|
Sec motion ra |
+024 |
|
| Pri motion dec |
-030 |
|
Sec motion dec |
-030 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lyra |
|
Tycho2 |
3525-01109-1 |
|
Gaia DR2 |
2121250026411396352 |
|
ADS |
11305 |
|
ORBITAL ELEMENTS
| Period (P) | 234y | |
Periastron (T) | 2006y | |
Semi-major axis (a) | 0.55a | |
| Eccentricity (e) | 0.41 | |
Inclination (i) | 81° | |
Longitude of periastron (ω) | 41° | |
| Node (Ω) | 127.3° | |
Notes | n | |
Reference | Hei1998 | |
| Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
130.1 |
0.318 |
| 2001 |
130.8 |
0.309 |
| 2002 |
131.5 |
0.298 |
| 2003 |
132.2 |
0.287 |
| 2004 |
133.1 |
0.274 |
| 2005 |
134.0 |
0.261 |
| 2006 |
135.0 |
0.247 |
| 2007 |
136.2 |
0.232 |
| 2008 |
137.5 |
0.217 |
| 2009 |
139.0 |
0.201 |
| 2010 |
140.8 |
0.184 |
| 2011 |
143.0 |
0.167 |
| 2012 |
145.7 |
0.149 |
| 2013 |
149.0 |
0.132 |
| 2014 |
153.4 |
0.115 |
| 2015 |
159.4 |
0.098 |
| 2016 |
167.6 |
0.082 |
| 2017 |
179.4 |
0.069 |
| 2018 |
195.7 |
0.060 |
| 2019 |
215.8 |
0.056 |
| 2020 |
235.8 |
0.060 |
| 2021 |
251.8 |
0.070 |
| 2022 |
263.2 |
0.084 |
| 2023 |
271.3 |
0.099 |
| 2024 |
277.0 |
0.116 |
| 2025 |
281.3 |
0.134 |
| 2026 |
284.6 |
0.152 |
| 2027 |
287.1 |
0.170 |
| 2028 |
289.2 |
0.188 |
| 2029 |
290.9 |
0.205 |
| 2030 |
292.4 |
0.223 |
|
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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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