17387+6114 HOM 1 Aa,Ab
17h 38m 39.66s +61° 14' 15.6" P.A. 18.00 sep 0.0 mag 10.20,11.40 Sp K7 dist. 33.12 pc (108.04 l.y.)
| Coord 2000 |
17387+6114 |
|
Discov num |
HOM 1 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
17 38 39.66 +61 14 15.6 |
|
| Date first |
1998 |
|
Date last |
2011 |
|
Obs |
10 |
|
| Pa first |
276 |
|
Pa last |
18.4 |
|
P.A. Now (θ) |
96.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.02 |
|
Sep. Now (ρ) |
0.036" |
|
| Mag pri |
10.20 |
|
Mag sec |
11.40 |
|
delta mag (ΔM) |
1.2 |
|
Spectral class |
K7 (yellow-orange) |
|
| Pri motion ra |
-031 |
|
Sec motion ra |
|
|
| Pri motion dec |
+059 |
|
Sec motion dec |
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|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
17387+6114 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
17 38 40 +61 14 16 |
HOM 1 Aa,Ab |
2011 |
10 |
18 |
0.0 |
10.20 |
11.40 |
1.20 |
Y |
<=== |
| Show |
|
|
17 38 40 +61 14 16 |
LAF 58 AB |
2005 |
1 |
319 |
4.1 |
7.20 |
18.20 |
11.00 |
|
|
| Show |
|
|
17 38 40 +61 14 16 |
LAF 58 AC |
2015 |
3 |
229 |
8.9 |
7.20 |
16.40 |
9.20 |
|
|
| Show |
|
|
17 38 40 +61 14 16 |
VVO 17 AD |
2015 |
5 |
151 |
19.1 |
10.20 |
14.50 |
4.30 |
|
|
Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Draco |
|
HIP |
86346 |
|
Tycho2 |
4199-01286-1 |
|
Gaia DR2 |
1436001566431649792 |
|
| HD |
160934 |
|
Distance |
33.12 |
|
Distance ly |
108.04 |
|
ORBITAL ELEMENTS
| Period (P) | 3764d (10.31y) | ± 12.4 |
Periastron (T) | 52389.5m (2002.315y) | ± 64 |
Semi-major axis (a) | 152.5m | ± 4.7 |
| Eccentricity (e) | 0.636 | ± 0.02 |
Inclination (i) | 82.3° | ± 0.8 |
Longitude of periastron (ω) | 216° | ± 3.1 |
| Node (Ω) | 266.7° | ± 0.6 |
Notes | n | |
Reference | EvT2012 | |
| Equinox | | |
Last observation | 2011 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
286.9 |
0.070 |
| 2001 |
17.7 |
0.020 |
| 2002 |
83.9 |
0.063 |
| 2003 |
257.4 |
0.060 |
| 2004 |
265.3 |
0.158 |
| 2005 |
267.8 |
0.205 |
| 2006 |
269.6 |
0.220 |
| 2007 |
271.4 |
0.213 |
| 2008 |
273.4 |
0.187 |
| 2009 |
276.5 |
0.145 |
| 2010 |
282.8 |
0.090 |
| 2011 |
319.7 |
0.026 |
| 2012 |
76.8 |
0.055 |
| 2013 |
231.2 |
0.016 |
| 2014 |
264.1 |
0.136 |
| 2015 |
267.1 |
0.195 |
| 2016 |
269.1 |
0.218 |
| 2017 |
270.8 |
0.217 |
| 2018 |
272.7 |
0.197 |
| 2019 |
275.4 |
0.160 |
| 2020 |
280.2 |
0.108 |
| 2021 |
297.3 |
0.045 |
| 2022 |
64.9 |
0.038 |
| 2023 |
96.1 |
0.036 |
| 2024 |
262.3 |
0.107 |
| 2025 |
266.4 |
0.181 |
| 2026 |
268.5 |
0.214 |
| 2027 |
270.3 |
0.220 |
| 2028 |
272.1 |
0.205 |
| 2029 |
274.4 |
0.173 |
| 2030 |
278.3 |
0.125 |
|
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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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