19194-0136 HDS 2734 Aa,Ab
19h 19m 26.50s -01° 36' 57.7" P.A. 92.00 sep 0.2 mag 10.97,11.37 Sp M0 dist. 59.03 pc (192.56 l.y.)
| Coord 2000 |
19194-0136 |
|
Discov num |
HDS2734 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
19 19 26.50 -01 36 57.7 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
17 |
|
| Pa first |
165 |
|
Pa last |
92.2 |
|
P.A. Now (θ) |
119.3° |
|
| Sep first |
0.4 |
|
Sep last |
0.155 |
|
Sep. Now (ρ) |
0.201" |
|
| Mag pri |
10.97 |
|
Mag sec |
11.37 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
M0 (red) |
|
| Pri motion ra |
+157 |
|
Sec motion ra |
|
|
| Pri motion dec |
+098 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
19194-0136 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
19 19 26 -01 36 58 |
HDS 2734 Aa,Ab |
2021 |
17 |
92 |
0.2 |
10.97 |
11.37 |
0.40 |
Y |
<=== |
| Show |
|
|
19 19 26 -01 36 58 |
WOR 8 AB |
2000 |
5 |
253 |
13.7 |
10.35 |
14.29 |
3.94 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Aquila |
|
HIP |
94960 |
|
Tycho2 |
5130-02249-1 |
|
Gaia DR2 |
4262771503914847616 |
|
| HD |
181148 |
|
Distance |
59.03 |
|
Distance ly |
192.56 |
|
ORBITAL ELEMENTS
| Period (P) | 36.83y | ± 0.29 |
Periastron (T) | 2020.1y | ± 0.03 |
Semi-major axis (a) | 0.296a | ± 0.001 |
| Eccentricity (e) | 0.625 | ± 0.012 |
Inclination (i) | 0° | |
Longitude of periastron (ω) | 0° | |
| Node (Ω) | 19.85° | ± 0.4 |
Notes | | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
195.0 |
0.478 |
| 2001 |
197.9 |
0.481 |
| 2002 |
200.8 |
0.481 |
| 2003 |
203.7 |
0.479 |
| 2004 |
206.6 |
0.476 |
| 2005 |
209.6 |
0.470 |
| 2006 |
212.7 |
0.462 |
| 2007 |
215.9 |
0.452 |
| 2008 |
219.2 |
0.440 |
| 2009 |
222.8 |
0.425 |
| 2010 |
226.7 |
0.408 |
| 2011 |
230.9 |
0.388 |
| 2012 |
235.6 |
0.366 |
| 2013 |
240.9 |
0.341 |
| 2014 |
247.2 |
0.313 |
| 2015 |
254.7 |
0.282 |
| 2016 |
264.3 |
0.247 |
| 2017 |
277.3 |
0.209 |
| 2018 |
296.2 |
0.169 |
| 2019 |
326.7 |
0.131 |
| 2020 |
14.4 |
0.111 |
| 2021 |
64.8 |
0.125 |
| 2022 |
98.5 |
0.161 |
| 2023 |
119.3 |
0.201 |
| 2024 |
133.1 |
0.240 |
| 2025 |
143.2 |
0.275 |
| 2026 |
151.2 |
0.307 |
| 2027 |
157.6 |
0.336 |
| 2028 |
163.1 |
0.361 |
| 2029 |
167.9 |
0.384 |
| 2030 |
172.2 |
0.404 |
|
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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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