19167-4553 RST 4036 (HD 179930)
19h 16m 42.89s -45° 53' 21.0" P.A. 166.00 sep 0.2 mag 10.20,10.20 Sp K5/M0V dist. 16.1 pc (52.52 l.y.)
| Coord 2000 |
19167-4553 |
|
Discov num |
RST4036 |
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Comp |
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Coord arcsec 2000 |
19 16 42.89 -45 53 21.0 |
|
| Date first |
1929 |
|
Date last |
2021 |
|
Obs |
27 |
|
| Pa first |
168 |
|
Pa last |
165.7 |
|
P.A. Now (θ) |
106.4° |
|
| Sep first |
0.3 |
|
Sep last |
0.238 |
|
Sep. Now (ρ) |
0.167" |
|
| Mag pri |
10.20 |
|
Mag sec |
10.20 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
K5/M0V (yellow-orange) |
|
| Pri motion ra |
+220 |
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Sec motion ra |
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| Pri motion dec |
-421 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 179930 |
|
Constellation |
Telescopium |
|
HIP |
94739 |
|
Tycho2 |
8375-01985-1 |
|
| HD |
179930 |
|
GL |
Gl 750A |
|
CD |
CD-4612902 |
|
CP |
CP-46 9672 |
|
| Distance |
16.1 |
|
Distance ly |
52.52 |
|
ORBITAL ELEMENTS
| Period (P) | 7.68y | |
Periastron (T) | 1995.057y | |
Semi-major axis (a) | 0.244a | |
| Eccentricity (e) | 0.263 | |
Inclination (i) | 124.7° | |
Longitude of periastron (ω) | 241° | |
| Node (Ω) | 200.2° | |
Notes | n | |
Reference | Msn2019 | |
| Equinox | 2000 | |
Last observation | 2019 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
104.2 |
0.167 |
| 2001 |
54.7 |
0.194 |
| 2002 |
18.1 |
0.199 |
| 2003 |
302.9 |
0.106 |
| 2004 |
218.5 |
0.206 |
| 2005 |
192.9 |
0.271 |
| 2006 |
171.0 |
0.248 |
| 2007 |
138.4 |
0.189 |
| 2008 |
86.7 |
0.170 |
| 2009 |
42.4 |
0.206 |
| 2010 |
3.9 |
0.173 |
| 2011 |
261.4 |
0.119 |
| 2012 |
208.5 |
0.238 |
| 2013 |
186.2 |
0.271 |
| 2014 |
162.4 |
0.230 |
| 2015 |
123.4 |
0.174 |
| 2016 |
70.5 |
0.179 |
| 2017 |
31.1 |
0.209 |
| 2018 |
343.2 |
0.136 |
| 2019 |
235.2 |
0.159 |
| 2020 |
200.7 |
0.259 |
| 2021 |
179.4 |
0.264 |
| 2022 |
152.3 |
0.210 |
| 2023 |
106.4 |
0.167 |
| 2024 |
56.3 |
0.193 |
| 2025 |
19.6 |
0.201 |
| 2026 |
308.3 |
0.107 |
| 2027 |
220.0 |
0.201 |
| 2028 |
193.7 |
0.270 |
| 2029 |
172.0 |
0.250 |
| 2030 |
140.1 |
0.191 |
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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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