19573+0513 A 604 (HD 188914)
19h 57m 19.48s +05° 12' 45.1" P.A. 350.00 sep 0.1 mag 9.06,9.85 Sp F8 dist. 190.48 pc (621.35 l.y.)
| Coord 2000 |
19573+0513 |
|
Discov num |
A 604 |
|
Comp |
|
|
Coord arcsec 2000 |
19 57 19.48 +05 12 45.1 |
|
| Date first |
1903 |
|
Date last |
2017 |
|
Obs |
62 |
|
| Pa first |
263 |
|
Pa last |
349.7 |
|
P.A. Now (θ) |
334.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.103 |
|
Sep. Now (ρ) |
0.126" |
|
| Mag pri |
9.06 |
|
Mag sec |
9.85 |
|
delta mag (ΔM) |
0.79 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
-003 |
|
Sec motion ra |
|
|
| Pri motion dec |
-009 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 188914 |
|
Constellation |
Aquila |
|
SAO |
125274 |
|
HIP |
98203 |
|
| Tycho2 |
0489-02302-1 |
|
Gaia DR2 |
4248515717172419072 |
|
HD |
188914 |
|
ADS |
13156 |
|
| BD |
BD+04 4286 |
|
Distance |
190.48 |
|
Distance ly |
621.35 |
|
ORBITAL ELEMENTS
| Period (P) | 228.15y | ± 17.63 |
Periastron (T) | 1935.43y | ± 5.63 |
Semi-major axis (a) | 0.291a | ± 0.016 |
| Eccentricity (e) | 0.268 | ± 0.019 |
Inclination (i) | 108° | ± 1.2 |
Longitude of periastron (ω) | 306° | ± 12.2 |
| Node (Ω) | 94.7° | ± 1.9 |
Notes | n | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
45.7 |
0.128 |
| 2001 |
43.2 |
0.125 |
| 2002 |
40.6 |
0.122 |
| 2003 |
37.9 |
0.119 |
| 2004 |
35.0 |
0.117 |
| 2005 |
32.1 |
0.114 |
| 2006 |
29.0 |
0.112 |
| 2007 |
25.8 |
0.111 |
| 2008 |
22.5 |
0.109 |
| 2009 |
19.1 |
0.108 |
| 2010 |
15.6 |
0.107 |
| 2011 |
12.2 |
0.107 |
| 2012 |
8.6 |
0.106 |
| 2013 |
5.1 |
0.107 |
| 2014 |
1.6 |
0.107 |
| 2015 |
358.2 |
0.108 |
| 2016 |
354.8 |
0.109 |
| 2017 |
351.5 |
0.111 |
| 2018 |
348.3 |
0.113 |
| 2019 |
345.2 |
0.115 |
| 2020 |
342.3 |
0.117 |
| 2021 |
339.4 |
0.120 |
| 2022 |
336.7 |
0.123 |
| 2023 |
334.1 |
0.126 |
| 2024 |
331.7 |
0.129 |
| 2025 |
329.4 |
0.132 |
| 2026 |
327.2 |
0.136 |
| 2027 |
325.1 |
0.140 |
| 2028 |
323.1 |
0.144 |
| 2029 |
321.2 |
0.148 |
| 2030 |
319.4 |
0.152 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
