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Current system
10121-0241
DEL 3


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32' : 10100-0236
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HDO 125

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HJ 154

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J 2073

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TSN 113

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DAM2319



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

10121-0241 DEL 3

 
 
10h 12m 04.68s -02° 41' 05.1" P.A. 252.00 sep 0.2 mag 9.90,10.90 Sp M2.5V dist. 12.33 pc (40.22 l.y.)
 
 
Coord 2000 10121-0241 Discov num DEL   3 Comp Coord arcsec 2000 10 12 04.68 -02 41 05.1
Date first 1999 Date last 2023 Obs 35
Pa first 256 Pa last 251.7 P.A. Now (θ) 66.5°
Sep first 0.2 Sep last 0.21 Sep. Now (ρ) 0.17"
Mag pri 9.90 Mag sec 10.90 delta mag (ΔM) 1 Spectral class M2.5V (red)
Pri motion ra +527 Sec motion ra
Pri motion dec -601 Sec motion dec
Notes O R (Orbital solution, Red magnitudes)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sextans HIP 49969 Distance 12.33 Distance ly 40.22
 
 
ORBITAL ELEMENTS
 
 
Period (P)7.5731y± 0.0055 Periastron (T)57700.6d (2016.855y)± 3.9 Semi-major axis (a)293m± 3.4
Eccentricity (e)0.7503± 0.0061 Inclination (i)93.026°± 0.073 Longitude of periastron (ω)273.99°± 0.11
Node (Ω)68.523°± 0.047 Notes ReferenceMnA2019
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 253.9 0.195
2001 250.5 0.197
2002 68.2 0.132
2003 63.2 0.169
2004 55.2 0.102
2005 359.0 0.029
2006 266.6 0.085
2007 256.5 0.162
2008 252.5 0.209
2009 248.4 0.130
2010 65.8 0.177
2011 60.7 0.145
2012 46.4 0.067
2013 291.1 0.040
2014 260.6 0.120
2015 254.5 0.188
2016 251.1 0.205
2017 69.9 0.085
2018 63.9 0.175
2019 57.0 0.114
2020 20.1 0.035
2021 269.9 0.073
2022 257.3 0.152
2023 252.9 0.206
2024 249.3 0.164
2025 66.5 0.170
2026 61.6 0.154
2027 50.3 0.079
2028 308.0 0.031
2029 262.2 0.108
2030 255.1 0.180
2031 251.5 0.209
2032 110.3 0.006
2033 64.5 0.178
2034 58.5 0.125
2035 33.2 0.045
2036 274.5 0.061
2037 258.3 0.142
2038 253.4 0.201
2039 250.0 0.185
2040 67.2 0.156
2041 62.5 0.162
2042 53.2 0.091
2043 333.4 0.027
2044 264.2 0.096
2045 255.8 0.171
2046 252.0 0.210
2047 246.6 0.080
2048 65.2 0.179
2049 59.7 0.136
2050 41.4 0.056


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds10121-0241b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic