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Current system
09156-1036
MTG 2


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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

09156-1036 MTG 2

 
 
09h 15m 36.40s -10° 35' 47.2" P.A. 305.00 sep 0.2 mag 14.30,14.80 Sp M4.5V
 
 
Coord 2000 09156-1036 Discov num MTG   2 Comp Coord arcsec 2000 09 15 36.40 -10 35 47.2
Date first 2003 Date last 2023 Obs 32
Pa first 262 Pa last 304.7 P.A. Now (θ) 107.3°
Sep first 0.1 Sep last 0.184 Sep. Now (ρ) 0.169"
Mag pri 14.30 Mag sec 14.80 delta mag (ΔM) 0.5 Spectral class M4.5V (red)
Pri motion ra -395 Sec motion ra
Pri motion dec -193 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hydra
 
 
ORBITAL ELEMENTS
 
 
Period (P)5.0419y± 0.0023 Periastron (T)2014.191y± 0.015 Semi-major axis (a)0.1992a± 0.001
Eccentricity (e)0.476± 0.0045 Inclination (i)116.23°± 0.59 Longitude of periastron (ω)273°± 1.3
Node (Ω)112.81°± 0.52 Notesn ReferenceMsn2023
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 95.7 0.177
2001 52.9 0.140
2002 351.4 0.144
2003 311.9 0.187
2004 243.9 0.059
2005 97.2 0.176
2006 55.2 0.141
2007 353.7 0.142
2008 313.3 0.186
2009 255.3 0.069
2010 98.7 0.176
2011 57.5 0.143
2012 356.0 0.140
2013 314.6 0.186
2014 263.5 0.081
2015 100.2 0.174
2016 59.7 0.145
2017 358.4 0.139
2018 316.0 0.185
2019 269.8 0.092
2020 101.7 0.173
2021 61.9 0.147
2022 0.8 0.137
2023 317.3 0.184
2024 274.6 0.103
2025 103.3 0.171
2026 64.0 0.149
2027 3.3 0.136
2028 318.7 0.183
2029 278.6 0.113
2030 104.9 0.168
2031 66.0 0.151
2032 5.8 0.134
2033 320.1 0.181
2034 281.9 0.123
2035 106.5 0.165
2036 68.0 0.153
2037 8.4 0.133
2038 321.5 0.180
2039 284.7 0.132
2040 108.3 0.162
2041 70.0 0.155
2042 11.0 0.132
2043 322.9 0.178
2044 287.2 0.140
2045 110.1 0.158
2046 71.8 0.157
2047 13.7 0.131
2048 324.4 0.176
2049 289.4 0.147
2050 112.0 0.153


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds09156-1036g.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic