01262-6751 DON  17

 
 
01H 26M 09.45S -67 50' 33.0" P.A. 289.5 SEP 1.39 MAG 8.81,9.81 SP K0IV DIST. 63.09 PC (205.8 L.Y.)
 
 
Coord 2000
01262-6751
Discov num
DON  17
Comp
Coord arcsec 2000
01 26 09.45 -67 50 33.0
Date first
1928
Date last
2015
Obs
24
Pa first
357
Pa last
290
P.A. Now (θ)
289.5°
Sep first
0.7
Sep last
1.4
Sep. Now (ρ)
1.39"
Mag pri
8.81
Mag sec
9.81
delta mag (ΔM)
1
Spectral class
K0IV (yellow-orange)
Pri motion ra
+117
Sec motion ra
+117
Pri motion dec
-062
Sec motion dec
-062
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hydrus
SAO
248383
HIP
6703
Tycho2
9136-00265-1
HD
8944
CD
CD-68 58
CP
CP-68 57
Distance
63.09
Distance ly
205.8
last precise pa
289.8
last precise sep
1.355
 
 
ORBITAL ELEMENTS
 
 
Period (P)1512y Periastron (T)1949.9y Semi-major axis (a)2.536a
Eccentricity (e)0.947 Inclination (i)37° Longitude of periastron (ω)344°
Node (Ω)148° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 1.121 285.2
2001 1.137 285.5
2002 1.154 285.8
2003 1.170 286.1
2004 1.186 286.4
2005 1.202 286.7
2006 1.218 286.9
2007 1.234 287.2
2008 1.249 287.4
2009 1.265 287.7
2010 1.280 287.9
2011 1.296 288.2
2012 1.311 288.4
2013 1.326 288.6
2014 1.341 288.8
2015 1.356 289.1
2016 1.371 289.3
2017 1.386 289.5
2018 1.400 289.7
2019 1.415 289.9
2020 1.429 290.1
2021 1.444 290.3
2022 1.458 290.5
2023 1.472 290.6
2024 1.486 290.8
2025 1.501 291.0
2026 1.515 291.2
2027 1.528 291.3
2028 1.542 291.5
2029 1.556 291.7
2030 1.570 291.8

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