18108-3529 B 1352 (HD 166136)
18h 10m 46.22s -35° 28' 40.9" P.A. 224.00 sep 0.2 mag 9.88,9.87 Sp G3V dist. 101.21 pc (330.15 l.y.)
Coord 2000 |
18108-3529 |
|
Discov num |
B 1352 |
|
Comp |
|
|
Coord arcsec 2000 |
18 10 46.22 -35 28 40.9 |
|
Date first |
1932 |
|
Date last |
2021 |
|
Obs |
13 |
|
Pa first |
62 |
|
Pa last |
224 |
|
P.A. Now (θ) |
224° |
|
Sep first |
0.2 |
|
Sep last |
0.243 |
|
Sep. Now (ρ) |
0.243" |
|
Mag pri |
9.88 |
|
Mag sec |
9.87 |
|
delta mag (ΔM) |
0.01 |
|
Spectral class |
G3V (yellow) |
|
Pri motion ra |
+015 |
|
Sec motion ra |
|
|
Pri motion dec |
-015 |
|
Sec motion dec |
|
|
Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 166136 |
|
Constellation |
Sagittarius |
|
SAO |
209813 |
|
HIP |
89076 |
|
Tycho2 |
7400-01004-1 |
|
HD |
166136 |
|
CD |
CD-3512338 |
|
CP |
CP-35 7781 |
|
Distance |
101.21 |
|
Distance ly |
330.15 |
|
ORBITAL ELEMENTS
Period (P) | 123.84y | |
Periastron (T) | 2039.29y | |
Semi-major axis (a) | 0.257a | |
Eccentricity (e) | 0.45 | |
Inclination (i) | 51.4° | |
Longitude of periastron (ω) | 81.9° | |
Node (Ω) | 240° | |
Notes | | |
Reference | Msn2017a | |
Equinox | 2000 | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
182.7 |
0.231 |
2001 |
184.7 |
0.232 |
2002 |
186.7 |
0.232 |
2003 |
188.7 |
0.233 |
2004 |
190.7 |
0.233 |
2005 |
192.6 |
0.234 |
2006 |
194.6 |
0.234 |
2007 |
196.5 |
0.234 |
2008 |
198.5 |
0.235 |
2009 |
200.4 |
0.235 |
2010 |
202.4 |
0.235 |
2011 |
204.3 |
0.235 |
2012 |
206.3 |
0.234 |
2013 |
208.2 |
0.234 |
2014 |
210.2 |
0.233 |
2015 |
212.1 |
0.233 |
2016 |
214.1 |
0.232 |
2017 |
216.1 |
0.230 |
2018 |
218.2 |
0.229 |
2019 |
220.2 |
0.227 |
2020 |
222.3 |
0.224 |
2021 |
224.5 |
0.222 |
2022 |
226.7 |
0.219 |
2023 |
229.0 |
0.215 |
2024 |
231.3 |
0.211 |
2025 |
233.8 |
0.206 |
2026 |
236.4 |
0.201 |
2027 |
239.1 |
0.195 |
2028 |
242.0 |
0.188 |
2029 |
245.2 |
0.181 |
2030 |
248.6 |
0.173 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|