18516-6054 RST 5126 (HD 173895)
18h 51m 34.80s -60° 53' 44.5" P.A. 144.00 sep 0.1 mag 7.92,8.78 Sp F0/2IV/V dist. 162.07 pc (528.67 l.y.)
| Coord 2000 |
18516-6054 |
|
Discov num |
RST5126 |
|
Comp |
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Coord arcsec 2000 |
18 51 34.80 -60 53 44.5 |
|
| Date first |
1942 |
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Date last |
2021 |
|
Obs |
16 |
|
| Pa first |
247 |
|
Pa last |
143.8 |
|
P.A. Now (θ) |
158.5° |
|
| Sep first |
0.2 |
|
Sep last |
0.123 |
|
Sep. Now (ρ) |
0.138" |
|
| Mag pri |
7.92 |
|
Mag sec |
8.78 |
|
delta mag (ΔM) |
0.86 |
|
Spectral class |
F0/2IV/V (yellow-white) |
|
| Pri motion ra |
+032 |
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Sec motion ra |
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| Pri motion dec |
-035 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 173895 |
|
Constellation |
Pavo |
|
SAO |
254390 |
|
HIP |
92547 |
|
| Tycho2 |
9070-00843-1 |
|
Gaia DR2 |
6632086295721488640 |
|
HD |
173895 |
|
GC |
25804 |
|
| CP |
CP-61 6260 |
|
Distance |
162.07 |
|
Distance ly |
528.67 |
|
ORBITAL ELEMENTS
| Period (P) | 54.16y | ± 3.17 |
Periastron (T) | 2011.97y | ± 0.36 |
Semi-major axis (a) | 0.13a | ± 0.005 |
| Eccentricity (e) | 0.492 | ± 0.02 |
Inclination (i) | 21.7° | ± 13.8 |
Longitude of periastron (ω) | 12.8° | ± 36.1 |
| Node (Ω) | 15° | ± 34.5 |
Notes | | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
253.0 |
0.140 |
| 2001 |
257.8 |
0.134 |
| 2002 |
263.2 |
0.127 |
| 2003 |
269.2 |
0.119 |
| 2004 |
276.0 |
0.111 |
| 2005 |
283.9 |
0.104 |
| 2006 |
293.0 |
0.096 |
| 2007 |
303.7 |
0.089 |
| 2008 |
316.2 |
0.082 |
| 2009 |
330.9 |
0.076 |
| 2010 |
347.9 |
0.071 |
| 2011 |
7.0 |
0.067 |
| 2012 |
27.5 |
0.066 |
| 2013 |
48.5 |
0.066 |
| 2014 |
68.6 |
0.069 |
| 2015 |
86.5 |
0.074 |
| 2016 |
101.7 |
0.081 |
| 2017 |
114.5 |
0.089 |
| 2018 |
125.0 |
0.097 |
| 2019 |
133.8 |
0.106 |
| 2020 |
141.3 |
0.115 |
| 2021 |
147.8 |
0.123 |
| 2022 |
153.4 |
0.131 |
| 2023 |
158.5 |
0.138 |
| 2024 |
163.0 |
0.145 |
| 2025 |
167.1 |
0.152 |
| 2026 |
170.9 |
0.158 |
| 2027 |
174.4 |
0.164 |
| 2028 |
177.7 |
0.169 |
| 2029 |
180.8 |
0.173 |
| 2030 |
183.7 |
0.177 |
| 2031 |
186.5 |
0.181 |
| 2032 |
189.3 |
0.184 |
| 2033 |
191.9 |
0.187 |
| 2034 |
194.5 |
0.189 |
| 2035 |
197.0 |
0.191 |
| 2036 |
199.5 |
0.192 |
| 2037 |
201.9 |
0.193 |
| 2038 |
204.4 |
0.193 |
| 2039 |
206.8 |
0.193 |
| 2040 |
209.2 |
0.193 |
| 2041 |
211.7 |
0.192 |
| 2042 |
214.2 |
0.191 |
| 2043 |
216.7 |
0.189 |
| 2044 |
219.3 |
0.187 |
| 2045 |
221.9 |
0.184 |
| 2046 |
224.6 |
0.181 |
| 2047 |
227.5 |
0.178 |
| 2048 |
230.4 |
0.174 |
| 2049 |
233.5 |
0.169 |
| 2050 |
236.7 |
0.165 |
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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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