19580+0456 A 606 (HD 189044)
19h 58m 02.80s +04° 56' 08.4" P.A. 168.00 sep 0.6 mag 9.52,9.33 Sp G5 dist. 132.8 pc (433.19 l.y.)
| Coord 2000 |
19580+0456 |
|
Discov num |
A 606 |
|
Comp |
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Coord arcsec 2000 |
19 58 02.80 +04 56 08.4 |
|
| Date first |
1903 |
|
Date last |
2021 |
|
Obs |
84 |
|
| Pa first |
106 |
|
Pa last |
167.9 |
|
P.A. Now (θ) |
168.8° |
|
| Sep first |
0.3 |
|
Sep last |
0.595 |
|
Sep. Now (ρ) |
0.55" |
|
| Mag pri |
9.52 |
|
Mag sec |
9.33 |
|
delta mag (ΔM) |
0.19 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+026 |
|
Sec motion ra |
+026 |
|
| Pri motion dec |
+003 |
|
Sec motion dec |
+003 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 189044 |
|
Constellation |
Aquila |
|
SAO |
125286 |
|
HIP |
98272 |
|
| Tycho2 |
0489-01421-1 |
|
Gaia DR2 |
4248447753598217216 |
|
HD |
189044 |
|
ADS |
13169 |
|
| BD |
BD+04 4292 |
|
Distance |
132.8 |
|
Distance ly |
433.19 |
|
ORBITAL ELEMENTS
| Period (P) | 220.8y | |
Periastron (T) | 1924.46y | |
Semi-major axis (a) | 0.41a | |
| Eccentricity (e) | 0.379 | |
Inclination (i) | 12.5° | |
Longitude of periastron (ω) | 251.3° | |
| Node (Ω) | 107.5° | |
Notes | n | |
Reference | Sca2018e | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
149.1 |
0.519 |
| 2001 |
150.0 |
0.522 |
| 2002 |
150.9 |
0.524 |
| 2003 |
151.8 |
0.525 |
| 2004 |
152.7 |
0.527 |
| 2005 |
153.6 |
0.529 |
| 2006 |
154.4 |
0.531 |
| 2007 |
155.3 |
0.533 |
| 2008 |
156.2 |
0.534 |
| 2009 |
157.0 |
0.536 |
| 2010 |
157.9 |
0.537 |
| 2011 |
158.8 |
0.539 |
| 2012 |
159.6 |
0.540 |
| 2013 |
160.5 |
0.541 |
| 2014 |
161.3 |
0.542 |
| 2015 |
162.1 |
0.544 |
| 2016 |
163.0 |
0.545 |
| 2017 |
163.8 |
0.546 |
| 2018 |
164.6 |
0.547 |
| 2019 |
165.5 |
0.547 |
| 2020 |
166.3 |
0.548 |
| 2021 |
167.1 |
0.549 |
| 2022 |
167.9 |
0.550 |
| 2023 |
168.8 |
0.550 |
| 2024 |
169.6 |
0.551 |
| 2025 |
170.4 |
0.552 |
| 2026 |
171.2 |
0.552 |
| 2027 |
172.0 |
0.552 |
| 2028 |
172.8 |
0.553 |
| 2029 |
173.6 |
0.553 |
| 2030 |
174.4 |
0.553 |
|
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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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