17157-0949 A 2592 AB (HD 156034)
17h 15m 41.08s -09° 48' 31.9" P.A. 70.00 sep 0.2 mag 7.15,9.69 Sp F7V dist. 204.08 pc (665.71 l.y.)
Coord 2000 |
17157-0949 |
|
Discov num |
A 2592 |
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Comp |
AB |
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Coord arcsec 2000 |
17 15 41.08 -09 48 31.9 |
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Date first |
1913 |
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Date last |
2021 |
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Obs |
88 |
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Pa first |
344 |
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Pa last |
69.7 |
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P.A. Now (θ) |
59.9° |
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Sep first |
0.3 |
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Sep last |
0.209 |
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Sep. Now (ρ) |
0.215" |
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Mag pri |
7.15 |
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Mag sec |
9.69 |
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delta mag (ΔM) |
2.54 |
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Spectral class |
F7V (yellow-white) |
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Pri motion ra |
+012 |
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Sec motion ra |
+012 |
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Pri motion dec |
-021 |
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Sec motion dec |
-021 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
17157-0949 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 156034 |
141578 |
17 15 41 -09 48 32 |
A 2592 AB |
2021 |
88 |
70 |
0.2 |
7.15 |
9.69 |
2.54 |
Y |
<=== |
Show |
|
|
17 15 41 -09 48 32 |
TOK 53 Ba,Bb |
2021 |
21 |
279 |
0.0 |
10.40 |
10.60 |
0.20 |
Y |
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Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 156034 |
|
Constellation |
Ophiuchus |
|
SAO |
141578 |
|
HIP |
84430 |
|
Tycho2 |
5649-00907-1 |
|
Gaia DR2 |
4143293519539985536 |
|
HD |
156034 |
|
GC |
23293 |
|
ADS |
10423 |
|
BD |
BD-09 4525 |
|
Distance |
204.08 |
|
Distance ly |
665.71 |
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ORBITAL ELEMENTS
Period (P) | 137.1y | ± 1.8 |
Periastron (T) | 2016.09y | ± 0.26 |
Semi-major axis (a) | 0.344a | ± 0.002 |
Eccentricity (e) | 0.357 | ± 0.007 |
Inclination (i) | 141.4° | ± 1.1 |
Longitude of periastron (ω) | 280.5° | ± 1.7 |
Node (Ω) | 26.5° | ± 1.2 |
Notes | n | |
Reference | Tok2021b | |
Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
190.2 |
0.276 |
2001 |
187.1 |
0.267 |
2002 |
183.8 |
0.259 |
2003 |
180.3 |
0.250 |
2004 |
176.5 |
0.241 |
2005 |
172.5 |
0.232 |
2006 |
168.1 |
0.223 |
2007 |
163.4 |
0.215 |
2008 |
158.2 |
0.206 |
2009 |
152.7 |
0.198 |
2010 |
146.7 |
0.191 |
2011 |
140.3 |
0.185 |
2012 |
133.4 |
0.180 |
2013 |
126.3 |
0.176 |
2014 |
118.9 |
0.174 |
2015 |
111.3 |
0.173 |
2016 |
103.8 |
0.175 |
2017 |
96.5 |
0.177 |
2018 |
89.4 |
0.181 |
2019 |
82.7 |
0.187 |
2020 |
76.4 |
0.193 |
2021 |
70.5 |
0.200 |
2022 |
65.0 |
0.207 |
2023 |
59.9 |
0.215 |
2024 |
55.2 |
0.223 |
2025 |
50.8 |
0.231 |
2026 |
46.7 |
0.239 |
2027 |
42.9 |
0.247 |
2028 |
39.3 |
0.255 |
2029 |
35.9 |
0.262 |
2030 |
32.7 |
0.269 |
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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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