20113-0049 MKT 10 Aa,Ab
20h 11m 18.26s -00° 49' 17.3" P.A. 88.00 sep 0.0 mag 3.50,5.00 Sp B9.5III dist. 87.8 pc (286.4 l.y.)
| Coord 2000 |
20113-0049 |
|
Discov num |
MKT 10 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
20 11 18.26 -00 49 17.3 |
|
| Date first |
1990 |
|
Date last |
2020 |
|
Obs |
30 |
|
| Pa first |
57 |
|
Pa last |
88.2 |
|
P.A. Now (θ) |
88.2° |
|
| Sep first |
0.0 |
|
Sep last |
0.005 |
|
Sep. Now (ρ) |
0.005" |
|
| Mag pri |
3.50 |
|
Mag sec |
5.00 |
|
delta mag (ΔM) |
1.5 |
|
Spectral class |
B9.5III (blue-white) |
|
| Pri motion ra |
+035 |
|
Sec motion ra |
|
|
| Pri motion dec |
+006 |
|
Sec motion dec |
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|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
20113-0049 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
144150 |
20 11 18 -00 49 17 |
MKT 10 Aa,Ab |
2020 |
30 |
88 |
0.0 |
3.50 |
5.00 |
1.50 |
Y |
<=== |
| Show |
The Aql |
144150 |
20 11 18 -00 49 17 |
ISO 12 Aa,Ac |
1987 |
1 |
44 |
1.0 |
3.23 |
|
|
|
|
| Show |
|
144150 |
20 11 18 -00 49 17 |
BU 1540 AB |
2008 |
4 |
259 |
115.8 |
3.23 |
13.00 |
9.77 |
|
|
Quadruple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Aquila |
|
SAO |
144150 |
|
HIP |
99473 |
|
Tycho2 |
5161-02682-1 |
|
| HD |
191692 |
|
HR |
7710 |
|
GC |
28010 |
|
BD |
BD-01 3911 |
|
| Bayer |
Theta Aquilae |
|
Bayer name |
The Aql |
|
Flamsteed |
65 Aquilae |
|
Flamsteed name |
65 Aql |
|
| FK5 |
756 |
|
Distance |
87.8 |
|
Distance ly |
286.4 |
|
Bayer greek |
θ Aql |
|
ORBITAL ELEMENTS
| Period (P) | 17.122d | ± 0.001 |
Periastron (T) | 47801.7d (1989.752y) | ± 0.1 |
Semi-major axis (a) | 3.2m | ± 0.1 |
| Eccentricity (e) | 0.6 | ± 0.02 |
Inclination (i) | 143.5° | ± 3 |
Longitude of periastron (ω) | 215° | ± 10 |
| Node (Ω) | 99° | ± 5 |
Notes | n | |
Reference | MkT1995 | |
| Equinox | 2000 | |
Last observation | 1992 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
57.8 |
0.004 |
| 2001-01-01 |
319.6 |
0.002 |
| 2002-01-01 |
94.0 |
0.004 |
| 2003-01-01 |
58.4 |
0.004 |
| 2004-01-01 |
323.4 |
0.002 |
| 2005-01-01 |
94.6 |
0.004 |
| 2006-01-01 |
59.0 |
0.004 |
| 2007-01-01 |
327.1 |
0.002 |
| 2008-01-01 |
95.3 |
0.004 |
| 2009-01-01 |
59.5 |
0.005 |
| 2010-01-01 |
330.5 |
0.002 |
| 2011-01-01 |
95.9 |
0.004 |
| 2012-01-01 |
60.1 |
0.005 |
| 2013-01-01 |
333.9 |
0.002 |
| 2014-01-01 |
96.5 |
0.004 |
| 2015-01-01 |
60.6 |
0.005 |
| 2016-01-01 |
337.1 |
0.002 |
| 2017-01-01 |
97.2 |
0.004 |
| 2018-01-01 |
61.2 |
0.005 |
| 2019-01-01 |
340.1 |
0.002 |
| 2020-01-01 |
97.9 |
0.004 |
| 2021-01-01 |
61.7 |
0.005 |
| 2022-01-01 |
343.0 |
0.002 |
| 2023-01-01 |
98.5 |
0.004 |
| 2024-01-01 |
62.2 |
0.005 |
| 2025-01-01 |
345.8 |
0.002 |
| 2026-01-01 |
99.2 |
0.004 |
| 2027-01-01 |
62.7 |
0.005 |
| 2028-01-01 |
348.5 |
0.002 |
| 2029-01-01 |
99.9 |
0.004 |
| 2030-01-01 |
63.3 |
0.005 |
|
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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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