17221-7007 FIN 373 (Iot Aps)
17h 22m 05.87s -70° 07' 23.5" P.A. 125.00 sep 0.1 mag 5.90,6.46 Sp B9V+B9.5V dist. 404.86 pc (1320.65 l.y.)
Coord 2000 |
17221-7007 |
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Discov num |
FIN 373 |
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Comp |
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Coord arcsec 2000 |
17 22 05.87 -70 07 23.5 |
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Date first |
1960 |
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Date last |
2021 |
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Obs |
14 |
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Pa first |
119 |
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Pa last |
125.3 |
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P.A. Now (θ) |
125.3° |
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Sep first |
0.1 |
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Sep last |
0.083 |
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Sep. Now (ρ) |
0.083" |
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Mag pri |
5.90 |
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Mag sec |
6.46 |
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delta mag (ΔM) |
0.56 |
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Spectral class |
B9V+B9.5V (blue-white/blue-white) |
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Pri motion ra |
-006 |
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Sec motion ra |
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Pri motion dec |
-012 |
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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 |
Iot Aps |
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Var name |
NSV8509 Aps |
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Constellation |
Apus |
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SAO |
257491 |
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HIP |
84979 |
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Tycho2 |
9280-00646-1 |
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Gaia DR2 |
5810861541976948096 |
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HD |
156190 |
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HR |
6411 |
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GC |
23388 |
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CP |
CP-69 2719 |
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Bayer |
Iota Apodis |
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Bayer name |
Iot Aps |
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FK5 |
642 |
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Distance |
404.86 |
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Distance ly |
1320.65 |
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Bayer greek |
ι Aps |
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ORBITAL ELEMENTS
Period (P) | 160y | |
Periastron (T) | 1998.2y | |
Semi-major axis (a) | 0.14a | |
Eccentricity (e) | 0.203 | |
Inclination (i) | 104.2° | |
Longitude of periastron (ω) | 55.3° | |
Node (Ω) | 288.2° | |
Notes | n | |
Reference | Tok2018b | |
Equinox | 2000 | |
Last observation | 2017 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
263.9 |
0.058 |
2001 |
260.5 |
0.053 |
2002 |
256.4 |
0.048 |
2003 |
251.4 |
0.044 |
2004 |
245.2 |
0.039 |
2005 |
237.5 |
0.035 |
2006 |
227.9 |
0.032 |
2007 |
216.5 |
0.029 |
2008 |
203.7 |
0.028 |
2009 |
190.5 |
0.029 |
2010 |
178.1 |
0.030 |
2011 |
167.4 |
0.033 |
2012 |
158.6 |
0.037 |
2013 |
151.6 |
0.041 |
2014 |
145.9 |
0.046 |
2015 |
141.3 |
0.051 |
2016 |
137.6 |
0.056 |
2017 |
134.4 |
0.061 |
2018 |
131.8 |
0.066 |
2019 |
129.5 |
0.071 |
2020 |
127.6 |
0.076 |
2021 |
125.8 |
0.081 |
2022 |
124.3 |
0.086 |
2023 |
123.0 |
0.091 |
2024 |
121.7 |
0.095 |
2025 |
120.6 |
0.100 |
2026 |
119.6 |
0.104 |
2027 |
118.7 |
0.108 |
2028 |
117.8 |
0.112 |
2029 |
117.0 |
0.116 |
2030 |
116.2 |
0.120 |
2031 |
115.5 |
0.123 |
2032 |
114.8 |
0.126 |
2033 |
114.2 |
0.129 |
2034 |
113.5 |
0.132 |
2035 |
113.0 |
0.135 |
2036 |
112.4 |
0.138 |
2037 |
111.8 |
0.140 |
2038 |
111.3 |
0.142 |
2039 |
110.8 |
0.144 |
2040 |
110.3 |
0.146 |
2041 |
109.8 |
0.148 |
2042 |
109.3 |
0.149 |
2043 |
108.8 |
0.150 |
2044 |
108.4 |
0.151 |
2045 |
107.9 |
0.152 |
2046 |
107.5 |
0.153 |
2047 |
107.0 |
0.154 |
2048 |
106.6 |
0.154 |
2049 |
106.1 |
0.154 |
2050 |
105.7 |
0.154 |
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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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