17018-5108 I 1306 (HD 153370)
17h 01m 46.35s -51° 07' 51.6" P.A. 197.00 sep 0.2 mag 7.23,7.27 Sp A7V dist. 104.49 pc (340.85 l.y.)
Coord 2000 |
17018-5108 |
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Discov num |
I 1306 |
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Comp |
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Coord arcsec 2000 |
17 01 46.35 -51 07 51.6 |
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Date first |
1926 |
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Date last |
2018 |
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Obs |
18 |
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Pa first |
200 |
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Pa last |
197 |
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P.A. Now (θ) |
197° |
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Sep first |
0.4 |
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Sep last |
0.217 |
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Sep. Now (ρ) |
0.217" |
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Mag pri |
7.23 |
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Mag sec |
7.27 |
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delta mag (ΔM) |
0.04 |
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Spectral class |
A7V (white) |
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Pri motion ra |
-005 |
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Sec motion ra |
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Pri motion dec |
-052 |
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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 153370 |
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Constellation |
Ara |
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SAO |
244370 |
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HIP |
83321 |
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Tycho2 |
8339-01997-1 |
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HD |
153370 |
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HR |
6312 |
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GC |
22922 |
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CD |
CD-5010955 |
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CP |
CP-50 9796 |
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Distance |
104.49 |
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Distance ly |
340.85 |
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ORBITAL ELEMENTS
Period (P) | 193.7y | |
Periastron (T) | 1989.59y | |
Semi-major axis (a) | 0.317a | |
Eccentricity (e) | 0.187 | |
Inclination (i) | 84.6° | |
Longitude of periastron (ω) | 149° | |
Node (Ω) | 12.8° | |
Notes | | |
Reference | Tok2016e | |
Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
192.6 |
0.262 |
2001 |
192.8 |
0.264 |
2002 |
193.1 |
0.264 |
2003 |
193.3 |
0.265 |
2004 |
193.5 |
0.265 |
2005 |
193.8 |
0.264 |
2006 |
194.0 |
0.263 |
2007 |
194.3 |
0.261 |
2008 |
194.5 |
0.259 |
2009 |
194.8 |
0.257 |
2010 |
195.1 |
0.254 |
2011 |
195.3 |
0.251 |
2012 |
195.6 |
0.247 |
2013 |
195.9 |
0.243 |
2014 |
196.2 |
0.239 |
2015 |
196.5 |
0.234 |
2016 |
196.8 |
0.229 |
2017 |
197.2 |
0.224 |
2018 |
197.5 |
0.218 |
2019 |
197.9 |
0.212 |
2020 |
198.3 |
0.206 |
2021 |
198.7 |
0.200 |
2022 |
199.2 |
0.193 |
2023 |
199.6 |
0.186 |
2024 |
200.2 |
0.179 |
2025 |
200.7 |
0.171 |
2026 |
201.3 |
0.164 |
2027 |
202.0 |
0.156 |
2028 |
202.8 |
0.148 |
2029 |
203.6 |
0.140 |
2030 |
204.5 |
0.132 |
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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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