19420+4015 KUI 94 (HD 186307)
19h 41m 57.63s +40° 15' 14.6" P.A. 158.00 sep 0.5 mag 6.50,7.80 Sp A6V dist. 81.57 pc (266.08 l.y.)
| Coord 2000 |
19420+4015 |
|
Discov num |
KUI 94 |
|
Comp |
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Coord arcsec 2000 |
19 41 57.63 +40 15 14.6 |
|
| Date first |
1937 |
|
Date last |
2014 |
|
Obs |
67 |
|
| Pa first |
160 |
|
Pa last |
157.9 |
|
P.A. Now (θ) |
153° |
|
| Sep first |
0.5 |
|
Sep last |
0.467 |
|
Sep. Now (ρ) |
0.448" |
|
| Mag pri |
6.50 |
|
Mag sec |
7.80 |
|
delta mag (ΔM) |
1.3 |
|
Spectral class |
A6V (white) |
|
| Pri motion ra |
-010 |
|
Sec motion ra |
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| Pri motion dec |
+030 |
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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 186307 |
|
Constellation |
Cygnus |
|
SAO |
48737 |
|
HIP |
96907 |
|
| Tycho2 |
3140-02348-1 |
|
Gaia DR2 |
2076394762376371200 |
|
HD |
186307 |
|
HR |
7499 |
|
| GC |
27275 |
|
BD |
BD+39 3878 |
|
Distance |
81.57 |
|
Distance ly |
266.08 |
|
ORBITAL ELEMENTS
| Period (P) | 79y | |
Periastron (T) | 1981y | |
Semi-major axis (a) | 0.34a | |
| Eccentricity (e) | 0.38 | |
Inclination (i) | 106° | |
Longitude of periastron (ω) | 12° | |
| Node (Ω) | 338° | |
Notes | n | |
Reference | Sod1999 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
171.2 |
0.296 |
| 2001 |
169.8 |
0.315 |
| 2002 |
168.5 |
0.334 |
| 2003 |
167.4 |
0.351 |
| 2004 |
166.3 |
0.366 |
| 2005 |
165.4 |
0.381 |
| 2006 |
164.5 |
0.395 |
| 2007 |
163.6 |
0.407 |
| 2008 |
162.8 |
0.418 |
| 2009 |
162.1 |
0.428 |
| 2010 |
161.4 |
0.436 |
| 2011 |
160.7 |
0.444 |
| 2012 |
160.0 |
0.450 |
| 2013 |
159.4 |
0.456 |
| 2014 |
158.7 |
0.460 |
| 2015 |
158.1 |
0.463 |
| 2016 |
157.5 |
0.465 |
| 2017 |
156.8 |
0.465 |
| 2018 |
156.2 |
0.465 |
| 2019 |
155.6 |
0.464 |
| 2020 |
155.0 |
0.461 |
| 2021 |
154.3 |
0.458 |
| 2022 |
153.7 |
0.453 |
| 2023 |
153.0 |
0.448 |
| 2024 |
152.3 |
0.441 |
| 2025 |
151.6 |
0.434 |
| 2026 |
150.9 |
0.425 |
| 2027 |
150.1 |
0.415 |
| 2028 |
149.4 |
0.405 |
| 2029 |
148.5 |
0.393 |
| 2030 |
147.6 |
0.381 |
|
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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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