12301-1324 BU   28AB

 
 
12H 30M 04.77S -13 23' 35.5" P.A. 346.1 SEP 2.2 MAG 6.49,9.58 SP F9V DIST. 24.65 PC (80.41 L.Y.)
 
 
Coord 2000
12301-1324
Discov num
BU   28
Comp
AB
Coord arcsec 2000
12 30 04.77 -13 23 35.5
Date first
1872
Date last
2015
Obs
99
Pa first
355
Pa last
346
P.A. Now (θ)
346.1°
Sep first
3.0
Sep last
2.1
Sep. Now (ρ)
2.2"
Mag pri
6.49
Mag sec
9.58
delta mag (ΔM)
3.09
Spectral class
F9V (yellow-white)
Pri motion ra
-262
Sec motion ra
-238
Pri motion dec
-054
Sec motion dec
-032
Notes
N O (See Notes, Orbital solution)
rPM=0.122 (< 0.3, Physical double)
This double is physical.
 
 
12301-1324 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 157326 12301-1324 BU 28 AB 1872 2015 99 346 2.2 6.49 9.58 3.09 Y <===
Show 157326 12301-1324 LV 19 AC 1906 2013 6 303 71.3 6.49 10.60 4.11
Show 157326 12301-1324 LV 19 AD 1918 2013 5 166 71.2 6.49 11.60 5.11
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Corvus
SAO
157326
HIP
60994
Tycho2
5533-01791-1
HD
108799
HR
4758
ADS
8573
GL
Gl 469.2A
BD
BD-12 3647
Distance
24.65
Distance ly
80.41
last precise pa
346
last precise sep
2.135
 
 
ORBITAL ELEMENTS
 
 
Period (P)150.94y Periastron (T)1946.09y Semi-major axis (a)1.395a
Eccentricity (e)0.702 Inclination (i)29.9° Longitude of periastron (ω)60.9°
Node (Ω)112.8° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2016
label rho theta
2000 2.078 336.5
2001 2.087 337.1
2002 2.094 337.8
2003 2.102 338.4
2004 2.108 339.1
2005 2.114 339.7
2006 2.120 340.4
2007 2.125 341.0
2008 2.129 341.6
2009 2.133 342.3
2010 2.136 342.9
2011 2.139 343.5
2012 2.142 344.1
2013 2.143 344.8
2014 2.144 345.4
2015 2.145 346.0
2016 2.145 346.6
2017 2.145 347.2
2018 2.144 347.9
2019 2.143 348.5
2020 2.141 349.1
2021 2.139 349.7
2022 2.136 350.4
2023 2.133 351.0
2024 2.129 351.6
2025 2.125 352.3
2026 2.120 352.9
2027 2.114 353.5
2028 2.109 354.2
2029 2.102 354.8
2030 2.096 355.5

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