19391+7625 MLR 224 (HD 186922)
19h 39m 05.98s +76° 25' 18.0" P.A. 288.00 sep 0.2 mag 8.67,9.35 Sp K0 dist. 29.7 pc (96.88 l.y.)
| Coord 2000 |
19391+7625 |
|
Discov num |
MLR 224 |
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Comp |
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Coord arcsec 2000 |
19 39 05.98 +76 25 18.0 |
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| Date first |
1971 |
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Date last |
2007 |
|
Obs |
46 |
|
| Pa first |
276 |
|
Pa last |
288 |
|
P.A. Now (θ) |
319.9° |
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| Sep first |
0.2 |
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Sep last |
0.19 |
|
Sep. Now (ρ) |
0.082" |
|
| Mag pri |
8.67 |
|
Mag sec |
9.35 |
|
delta mag (ΔM) |
0.68 |
|
Spectral class |
K0 (yellow-orange) |
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| Pri motion ra |
+156 |
|
Sec motion ra |
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| Pri motion dec |
+140 |
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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 186922 |
|
Constellation |
Draco |
|
SAO |
9496 |
|
HIP |
96656 |
|
| Tycho2 |
4584-01112-1 |
|
HD |
186922 |
|
GC |
27288 |
|
GL |
Gl 765.2 |
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| BD |
BD+76 750 |
|
Distance |
29.7 |
|
Distance ly |
96.88 |
|
ORBITAL ELEMENTS
| Period (P) | 4345.3d (11.9y) | ± 1.4 |
Periastron (T) | 57739.1d (2016.96y) | ± 2 |
Semi-major axis (a) | 189.38m | ± 0.63 |
| Eccentricity (e) | 0.2428 | ± 0.00065 |
Inclination (i) | 80.377° | ± 0.097 |
Longitude of periastron (ω) | 250.18° | ± 0.2 |
| Node (Ω) | 292.78° | ± 0.16 |
Notes | n | |
Reference | HJL2020 | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
6.3 |
0.040 |
| 2001 |
85.0 |
0.075 |
| 2002 |
101.9 |
0.135 |
| 2003 |
109.3 |
0.168 |
| 2004 |
116.0 |
0.147 |
| 2005 |
134.2 |
0.060 |
| 2006 |
274.0 |
0.071 |
| 2007 |
288.5 |
0.160 |
| 2008 |
293.8 |
0.198 |
| 2009 |
298.3 |
0.190 |
| 2010 |
304.3 |
0.149 |
| 2011 |
317.4 |
0.089 |
| 2012 |
17.9 |
0.039 |
| 2013 |
87.9 |
0.082 |
| 2014 |
102.9 |
0.140 |
| 2015 |
110.0 |
0.169 |
| 2016 |
116.9 |
0.141 |
| 2017 |
140.3 |
0.049 |
| 2018 |
277.1 |
0.082 |
| 2019 |
289.2 |
0.167 |
| 2020 |
294.2 |
0.199 |
| 2021 |
298.8 |
0.187 |
| 2022 |
305.2 |
0.144 |
| 2023 |
319.9 |
0.082 |
| 2024 |
30.0 |
0.039 |
| 2025 |
90.4 |
0.089 |
| 2026 |
103.8 |
0.145 |
| 2027 |
110.6 |
0.169 |
| 2028 |
117.8 |
0.134 |
| 2029 |
149.8 |
0.039 |
| 2030 |
279.5 |
0.093 |
|
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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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