16555-0820 KUI 75 AB
16h 55m 28.75s -08° 20' 11.3" P.A. 107.00 sep 0.2 mag 9.73,9.81 Sp M3.5V dist. 6.2 pc (20.22 l.y.)
| Coord 2000 |
16555-0820 |
|
Discov num |
KUI 75 |
|
Comp |
AB |
|
Coord arcsec 2000 |
16 55 28.75 -08 20 11.3 |
|
| Date first |
1934 |
|
Date last |
2019 |
|
Obs |
382 |
|
| Pa first |
135 |
|
Pa last |
106.9 |
|
P.A. Now (θ) |
106.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.225 |
|
Sep. Now (ρ) |
0.225" |
|
| Mag pri |
9.73 |
|
Mag sec |
9.81 |
|
delta mag (ΔM) |
0.08 |
|
Spectral class |
M3.5V (red) |
|
| Pri motion ra |
-826 |
|
Sec motion ra |
|
|
| Pri motion dec |
-874 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
16555-0820 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
141439 |
16 55 29 -08 20 11 |
KUI 75 AB |
2019 |
382 |
107 |
0.2 |
9.73 |
9.81 |
0.08 |
Y |
<=== |
| Show |
V1054 Oph |
141439 |
16 55 29 -08 20 11 |
LDS 573 AB,C |
2016 |
20 |
313 |
72.3 |
9.21 |
11.98 |
2.77 |
|
|
| Show |
|
141439 |
16 55 29 -08 20 11 |
LDS 573 AB,D |
1960 |
1 |
155 |
21.0 |
9.21 |
17.70 |
8.49 |
|
|
| Show |
|
141439 |
16 55 29 -08 20 11 |
SLE 687 AB,E |
2007 |
7 |
324 |
295.3 |
9.21 |
10.40 |
1.19 |
|
|
| Show |
|
141439 |
16 55 29 -08 20 11 |
WNO 55 AB,F |
2005 |
10 |
155 |
230.7 |
9.02 |
16.90 |
7.88 |
|
|
| Show |
|
|
16 55 25 -08 19 22 |
UC 3253 CF |
2016 |
6 |
150 |
298.8 |
11.98 |
16.90 |
4.92 |
|
|
Sextuple system
7 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
V1054 Oph |
|
Constellation |
Ophiuchus |
|
SAO |
141439 |
|
HIP |
82817 |
|
| Tycho2 |
5642-01503-1 |
|
HD |
152751 |
|
GC |
22805 |
|
GL |
Gl 644A |
|
| BD |
BD-08 4352 |
|
Distance |
6.2 |
|
Distance ly |
20.22 |
|
ORBITAL ELEMENTS
| Period (P) | 1.717y | |
Periastron (T) | 1991.6y | |
Semi-major axis (a) | 0.23a | |
| Eccentricity (e) | 0.06 | |
Inclination (i) | 161° | |
Longitude of periastron (ω) | 104° | |
| Node (Ω) | 147° | |
Notes | n | |
Reference | Sod1999 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 1 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
87.7 |
0.211 |
| 2001 |
230.8 |
0.231 |
| 2002 |
18.3 |
0.210 |
| 2003 |
176.4 |
0.236 |
| 2004 |
316.8 |
0.228 |
| 2005 |
121.4 |
0.224 |
| 2006 |
260.7 |
0.230 |
| 2007 |
55.5 |
0.205 |
| 2008 |
205.1 |
0.233 |
| 2009 |
348.3 |
0.220 |
| 2010 |
151.5 |
0.234 |
| 2011 |
290.6 |
0.230 |
| 2012 |
92.2 |
0.212 |
| 2013 |
234.5 |
0.230 |
| 2014 |
22.9 |
0.209 |
| 2015 |
180.0 |
0.236 |
| 2016 |
320.7 |
0.227 |
| 2017 |
125.3 |
0.225 |
| 2018 |
264.5 |
0.230 |
| 2019 |
60.2 |
0.205 |
| 2020 |
208.7 |
0.233 |
| 2021 |
352.4 |
0.218 |
| 2022 |
155.1 |
0.234 |
| 2023 |
294.3 |
0.230 |
| 2024 |
96.6 |
0.214 |
| 2025 |
238.3 |
0.230 |
| 2026 |
27.4 |
0.207 |
| 2027 |
183.6 |
0.236 |
| 2028 |
324.5 |
0.226 |
| 2029 |
129.2 |
0.227 |
| 2030 |
268.2 |
0.230 |
|
|
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 |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 16555-0820 |
| coord_arcsec_2000 | 165529.24-082003.1 |
| Period (P) | 2.965509d | ± 0.000006 |
Periastron (T) | 50919.48m (1998.29y) | ± 0.03 |
Semi-major axis (a) | | |
| Eccentricity (e) | 0.0209 | ± 0.0008 |
Inclination (i) | 164.18° | ± 0.08 |
Longitude of periastron (ω) | 150° | ± 3 |
| Node (Ω) | ° | |
Notes | n | |
Reference | Sgr2000 | |
| Equinox | | |
Last observation | | |
Grade | 7 | (1=Definitive, 9=Indet.) |
Not enought orbital data to create a graph.
