10260+0256 A 2570 (HD 90361)

 
 
10h 25m 58.68s +02° 55' 45.2" P.A. 146.00 sep 0.0 mag 7.79,7.71 Sp A2V dist. 170.36 pc (555.71 l.y.)
 
 
Coord 2000 10260+0256 Discov num A  2570 Comp Coord arcsec 2000 10 25 58.68 +02 55 45.2
Date first 1913 Date last 2023 Obs 59
Pa first 330 Pa last 145.9 P.A. Now (θ) 145.9°
Sep first 0.4 Sep last 0.037 Sep. Now (ρ) 0.037"
Mag pri 7.79 Mag sec 7.71 delta mag (ΔM) 0.08 Spectral class A2V (white)
Pri motion ra -032 Sec motion ra
Pri motion dec -001 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 90361 Constellation Sextans SAO 118296 HIP 51061
Tycho2 0249-00959-1 Gaia DR2 3856672171275658240 HD 90361 ADS 7769
BD BD+03 2365 Distance 170.36 Distance ly 555.71
 
 
ORBITAL ELEMENTS
 
 
Period (P)174y Periastron (T)2023.5y Semi-major axis (a)0.245a
Eccentricity (e)0.83 Inclination (i)114.3° Longitude of periastron (ω)329.4°
Node (Ω)122.9° Notes ReferenceTok2019c
Equinox Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 302.8 0.266
2001 302.4 0.259
2002 302.0 0.252
2003 301.5 0.245
2004 301.0 0.237
2005 300.5 0.229
2006 299.9 0.220
2007 299.3 0.212
2008 298.7 0.202
2009 297.9 0.193
2010 297.1 0.183
2011 296.2 0.172
2012 295.2 0.161
2013 294.0 0.150
2014 292.6 0.137
2015 291.0 0.124
2016 288.9 0.111
2017 286.2 0.096
2018 282.5 0.080
2019 276.9 0.064
2020 267.2 0.046
2021 246.1 0.030
2022 196.1 0.022
2023 149.2 0.031
2024 127.5 0.042
2025 113.6 0.048
2026 101.3 0.048
2027 88.9 0.047
2028 75.9 0.046
2029 62.7 0.047
2030 50.1 0.049
2031 38.7 0.052
2032 28.9 0.056
2033 20.7 0.062
2034 14.0 0.068
2035 8.4 0.075
2036 3.7 0.082
2037 359.8 0.089
2038 356.5 0.096
2039 353.6 0.103
2040 351.1 0.111
2041 348.9 0.118
2042 347.0 0.125
2043 345.3 0.132
2044 343.7 0.139
2045 342.3 0.146
2046 341.0 0.153
2047 339.9 0.160
2048 338.8 0.166
2049 337.8 0.173
2050 336.9 0.179


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds10260%2B0256b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic