14565+0255 A 2172 (HD 131954)
14h 56m 30.89s +02° 55' 12.2" P.A. 122.00 sep 0.2 mag 8.00,8.60 Sp K0
Coord 2000 |
14565+0255 |
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Discov num |
A 2172 |
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Comp |
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Coord arcsec 2000 |
14 56 30.89 +02 55 12.2 |
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Date first |
1910 |
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Date last |
2019 |
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Obs |
26 |
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Pa first |
339 |
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Pa last |
122.4 |
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P.A. Now (θ) |
113.8° |
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Sep first |
0.2 |
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Sep last |
0.169 |
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Sep. Now (ρ) |
0.156" |
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Mag pri |
8.00 |
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Mag sec |
8.60 |
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delta mag (ΔM) |
0.6 |
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Spectral class |
K0 (yellow-orange) |
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Pri motion ra |
+015 |
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Sec motion ra |
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Pri motion dec |
+026 |
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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 131954 |
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Constellation |
Virgo |
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SAO |
120747 |
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Tycho2 |
0330-00180-1 |
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Gaia DR2 |
1154515251007422464 |
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HD |
131954 |
|
ADS |
9443 |
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ORBITAL ELEMENTS
Period (P) | 168.3y | |
Periastron (T) | 2000.4y | |
Semi-major axis (a) | 0.196a | |
Eccentricity (e) | 0.177 | |
Inclination (i) | 115° | |
Longitude of periastron (ω) | 326° | |
Node (Ω) | 128.5° | |
Notes | | |
Reference | Hrt2010a | |
Equinox | 2000 | |
Last observation | 2009 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
145.1 |
0.137 |
2001 |
143.4 |
0.141 |
2002 |
141.7 |
0.145 |
2003 |
140.1 |
0.148 |
2004 |
138.6 |
0.151 |
2005 |
137.1 |
0.154 |
2006 |
135.7 |
0.157 |
2007 |
134.3 |
0.159 |
2008 |
133.0 |
0.161 |
2009 |
131.7 |
0.163 |
2010 |
130.4 |
0.164 |
2011 |
129.2 |
0.165 |
2012 |
127.9 |
0.166 |
2013 |
126.7 |
0.166 |
2014 |
125.4 |
0.166 |
2015 |
124.2 |
0.166 |
2016 |
123.0 |
0.166 |
2017 |
121.7 |
0.165 |
2018 |
120.5 |
0.164 |
2019 |
119.2 |
0.163 |
2020 |
117.9 |
0.161 |
2021 |
116.6 |
0.160 |
2022 |
115.2 |
0.158 |
2023 |
113.8 |
0.156 |
2024 |
112.4 |
0.153 |
2025 |
110.9 |
0.151 |
2026 |
109.4 |
0.148 |
2027 |
107.8 |
0.145 |
2028 |
106.1 |
0.142 |
2029 |
104.4 |
0.139 |
2030 |
102.6 |
0.136 |
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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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