11532-1540 A  2579

 
 
11H 53M 12.60S -15 40' 25.4" P.A. 33.5 SEP 0.41 MAG 9.29,8.61 SP F0V DIST. 267.38 PC (872.19 L.Y.)
 
 
Coord 2000
11532-1540
Discov num
A  2579
Comp
Coord arcsec 2000
11 53 12.60 -15 40 25.4
Date first
1911
Date last
2014
Obs
37
Pa first
183
Pa last
35
P.A. Now (θ)
33.5°
Sep first
0.2
Sep last
0.4
Sep. Now (ρ)
0.41"
Mag pri
9.29
Mag sec
8.61
delta mag (ΔM)
0.68
Spectral class
F0V (yellow-white)
Pri motion ra
-040
Sec motion ra
-040
Pri motion dec
+012
Sec motion dec
+012
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Crater
SAO
156961
HIP
57955
Tycho2
6093-00446-1
HD
103228
ADS
8332
BD
BD-14 3427
Distance
267.38
Distance ly
872.19
last precise pa
35.2
last precise sep
0.412
 
 
ORBITAL ELEMENTS
 
 
Period (P)236.3y± 20 Periastron (T)1897.68y± 1.65 Semi-major axis (a)0.321a± 0.005
Eccentricity (e)0.287± 0.05 Inclination (i)147.9°± 3 Longitude of periastron (ω)160.6°± 15
Node (Ω)17.8°± 5 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.390 47.0
2001 0.392 46.2
2002 0.393 45.4
2003 0.394 44.6
2004 0.396 43.7
2005 0.397 42.9
2006 0.398 42.1
2007 0.399 41.3
2008 0.400 40.5
2009 0.401 39.7
2010 0.402 38.9
2011 0.403 38.2
2012 0.404 37.4
2013 0.405 36.6
2014 0.405 35.8
2015 0.406 35.1
2016 0.407 34.3
2017 0.407 33.5
2018 0.408 32.7
2019 0.408 32.0
2020 0.408 31.2
2021 0.409 30.5
2022 0.409 29.7
2023 0.409 28.9
2024 0.409 28.2
2025 0.409 27.4
2026 0.409 26.6
2027 0.409 25.9
2028 0.409 25.1
2029 0.409 24.4
2030 0.408 23.6

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