22527+4347 COU 2244 (HD 216488)
22h 52m 39.94s +43° 47' 20.5" P.A. 290.00 sep 0.2 mag 8.70,8.70 Sp F0
| Coord 2000 |
22527+4347 |
|
Discov num |
COU2244 |
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Comp |
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Coord arcsec 2000 |
22 52 39.94 +43 47 20.5 |
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| Date first |
1984 |
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Date last |
2014 |
|
Obs |
18 |
|
| Pa first |
240 |
|
Pa last |
289.9 |
|
P.A. Now (θ) |
289.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.188 |
|
Sep. Now (ρ) |
0.188" |
|
| Mag pri |
8.70 |
|
Mag sec |
8.70 |
|
delta mag (ΔM) |
0 |
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Spectral class |
F0 (yellow-white) |
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| Pri motion ra |
+019 |
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Sec motion ra |
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| Pri motion dec |
-002 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 216488 |
|
Constellation |
Lacerta |
|
SAO |
52445 |
|
Tycho2 |
3227-00006-1 |
|
| Gaia DR2 |
1934683033689910400 |
|
HD |
216488 |
|
ORBITAL ELEMENTS
| Period (P) | 192.6y | ± 26.8 |
Periastron (T) | 2018.2y | ± 2.2 |
Semi-major axis (a) | 0.347a | ± 0.03 |
| Eccentricity (e) | 0.365 | ± 0.039 |
Inclination (i) | 72.9° | ± 0.4 |
Longitude of periastron (ω) | 214.2° | ± 7.8 |
| Node (Ω) | 103.9° | ± 0.6 |
Notes | | |
Reference | BAE2021 | |
| Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
272.4 |
0.223 |
| 2001 |
273.7 |
0.226 |
| 2002 |
274.8 |
0.229 |
| 2003 |
276.0 |
0.232 |
| 2004 |
277.1 |
0.233 |
| 2005 |
278.3 |
0.235 |
| 2006 |
279.4 |
0.235 |
| 2007 |
280.5 |
0.235 |
| 2008 |
281.6 |
0.235 |
| 2009 |
282.7 |
0.233 |
| 2010 |
283.9 |
0.231 |
| 2011 |
285.0 |
0.228 |
| 2012 |
286.2 |
0.225 |
| 2013 |
287.5 |
0.220 |
| 2014 |
288.8 |
0.215 |
| 2015 |
290.2 |
0.209 |
| 2016 |
291.6 |
0.203 |
| 2017 |
293.2 |
0.195 |
| 2018 |
294.8 |
0.188 |
| 2019 |
296.7 |
0.179 |
| 2020 |
298.7 |
0.170 |
| 2021 |
301.0 |
0.160 |
| 2022 |
303.5 |
0.150 |
| 2023 |
306.4 |
0.140 |
| 2024 |
309.8 |
0.130 |
| 2025 |
313.8 |
0.120 |
| 2026 |
318.5 |
0.110 |
| 2027 |
324.1 |
0.100 |
| 2028 |
330.8 |
0.091 |
| 2029 |
338.9 |
0.084 |
| 2030 |
348.4 |
0.078 |
|
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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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