02415-7128 B  1923

 
 
02H 41M 27.29S -71 27' 45.0" P.A. 264.1 SEP 0.21 MAG 8.13,9.31 SP G6V DIST. 53.76 PC (175.37 L.Y.)
 
 
Coord 2000
02415-7128
Discov num
B  1923
Comp
Coord arcsec 2000
02 41 27.29 -71 27 45.0
Date first
1931
Date last
2014
Obs
17
Pa first
37
Pa last
289
P.A. Now (θ)
264.1°
Sep first
0.6
Sep last
0.2
Sep. Now (ρ)
0.21"
Mag pri
8.13
Mag sec
9.31
delta mag (ΔM)
1.18
Spectral class
G6V (yellow)
Pri motion ra
+147
Sec motion ra
+147
Pri motion dec
-068
Sec motion dec
-068
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hydrus
SAO
255913
HIP
12548
Tycho2
9148-00395-1
HD
17215
CP
CP-71 156
Distance
53.76
Distance ly
175.37
last precise pa
288.8
last precise sep
0.162
 
 
ORBITAL ELEMENTS
 
 
Period (P)101.5y± 2.77 Periastron (T)2011.42y± 0.33 Semi-major axis (a)0.522a± 0.01
Eccentricity (e)0.376± 0.015 Inclination (i)116.3°± 0.9 Longitude of periastron (ω)252.3°± 2
Node (Ω)222.9°± 2.8 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.418 46.3
2001 0.408 44.0
2002 0.395 41.6
2003 0.380 38.9
2004 0.362 36.0
2005 0.341 32.8
2006 0.317 29.1
2007 0.291 24.9
2008 0.263 19.7
2009 0.234 13.2
2010 0.205 5.0
2011 0.179 354.2
2012 0.158 340.1
2013 0.147 322.8
2014 0.148 304.4
2015 0.162 287.7
2016 0.184 274.3
2017 0.212 264.1
2018 0.242 256.4
2019 0.273 250.4
2020 0.304 245.6
2021 0.333 241.7
2022 0.361 238.4
2023 0.387 235.6
2024 0.411 233.1
2025 0.432 230.8
2026 0.452 228.8
2027 0.470 226.9
2028 0.486 225.2
2029 0.501 223.6
2030 0.513 222.0

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic