12274-2843 B 228 (HD 108410)

 
 
12h 27m 26.42s -28° 42' 58.4" P.A. 130.00 sep 0.3 mag 8.18,8.39 Sp A9V dist. 90.09 pc (293.87 l.y.)
 
 
Coord 2000 12274-2843 Discov num B   228 Comp Coord arcsec 2000 12 27 26.42 -28 42 58.4
Date first 1926 Date last 2023 Obs 32
Pa first 134 Pa last 130.3 P.A. Now (θ) 138.2° (calc)
Sep first 0.3 Sep last 0.275 Sep. Now (ρ) 0.268" (calc)
Mag pri 8.18 Mag sec 8.39 delta mag (ΔM) 0.21 Spectral class A9V (white)
Pri motion ra -059 Sec motion ra
Pri motion dec +002 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 108410 Constellation Hydra SAO 180809 HIP 60775
Tycho2 6694-01109-1 Gaia DR2 3474712728119264384 HD 108410 ADS 8555
CD CD-28 9503 CP CP-28 4470 Distance 90.09 Distance ly 293.87
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.483y± 6.249 Periastron (T)1952.295y± 1.251 Semi-major axis (a)0.173a± 0.107
Eccentricity (e)0.666± 0.077 Inclination (i)63.6°± 12 Longitude of periastron (ω)164.9°± 12.6
Node (Ω)137.8°± 10.6 Notesn ReferenceFMR2010f
Equinox2000 Last observation2006 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 42.9 0.050
2001 68.9 0.063
2002 84.9 0.081
2003 94.8 0.100
2004 101.6 0.119
2005 106.4 0.138
2006 110.2 0.156
2007 113.1 0.172
2008 115.6 0.188
2009 117.8 0.202
2010 119.6 0.215
2011 121.3 0.226
2012 122.8 0.237
2013 124.1 0.247
2014 125.4 0.255
2015 126.6 0.262
2016 127.8 0.268
2017 128.8 0.273
2018 129.9 0.277
2019 130.9 0.280
2020 132.0 0.282
2021 133.0 0.283
2022 134.0 0.282
2023 135.0 0.280
2024 136.0 0.277
2025 137.1 0.273
2026 138.2 0.268
2027 139.3 0.261
2028 140.5 0.253
2029 141.9 0.243
2030 143.3 0.232
2031 144.9 0.219
2032 146.7 0.204
2033 148.8 0.187
2034 151.3 0.169
2035 154.5 0.148
2036 158.9 0.124
2037 165.4 0.098
2038 177.0 0.070
2039 203.4 0.044
2040 260.9 0.036
2041 303.9 0.053
2042 328.3 0.059
2043 353.8 0.052
2044 26.8 0.048
2045 57.8 0.056
2046 78.2 0.072
2047 90.6 0.091
2048 98.6 0.110
2049 104.3 0.129
2050 108.5 0.147


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds12274-2843b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic