02572-2458 BU  741AB

 
 
02H 57M 14.69S -24 58' 09.9" P.A. 349.4 SEP 0.48 MAG 8.06,8.20 SP K1/2V DIST. 22.47 PC (73.3 L.Y.)
 
 
Coord 2000
02572-2458
Discov num
BU  741
Comp
AB
Coord arcsec 2000
02 57 14.69 -24 58 09.9
Date first
1879
Date last
2015
Obs
75
Pa first
158
Pa last
348
P.A. Now (θ)
349.4°
Sep first
0.6
Sep last
0.6
Sep. Now (ρ)
0.48"
Mag pri
8.06
Mag sec
8.20
delta mag (ΔM)
0.14
Spectral class
K1/2V (yellow-orange)
Pri motion ra
+032
Sec motion ra
+032
Pri motion dec
-035
Sec motion dec
-035
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
02572-2458 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 168181 02572-2458 BU 741 AB 1879 2015 75 349 0.5 8.06 8.20 0.14 Y <===
Show 168181 02572-2458 S 423 AB,C 1824 2009 34 226 29.3 8.06 7.86 0.20
Show 194002 02572-2458 BEU 4 Ca,Cb 2000 2015 12 154 0.1 8.24 9.30 1.06 Y
Show 168180 02572-2458 HDS 379 CD 1991 1991 2 173 5.1 7.86 11.88 4.02
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Fornax
SAO
168181
HIP
13772
Tycho2
6437-00958-1
HD
18455
ADS
2242
GL
Gl 120.1A
CD
CD-25 1169
Distance
22.47
Distance ly
73.3
last precise pa
347.9
last precise sep
0.627
 
 
ORBITAL ELEMENTS
 
 
Period (P)149.89y± 4.48 Periastron (T)1870.68y± 4.22 Semi-major axis (a)1.425a± 0.077
Eccentricity (e)0.602± 0.016 Inclination (i)83°± 0.2 Longitude of periastron (ω)260.8°± 1.6
Node (Ω)163.5°± 0.5 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 1.010 337.5
2001 1.013 337.9
2002 1.013 338.4
2003 1.011 338.8
2004 1.006 339.3
2005 0.998 339.8
2006 0.986 340.3
2007 0.971 340.8
2008 0.951 341.3
2009 0.926 341.8
2010 0.896 342.4
2011 0.860 343.0
2012 0.818 343.7
2013 0.768 344.4
2014 0.709 345.3
2015 0.642 346.3
2016 0.565 347.6
2017 0.478 349.4
2018 0.382 352.0
2019 0.278 356.4
2020 0.171 6.4
2021 0.080 43.7
2022 0.106 122.3
2023 0.208 144.3
2024 0.316 151.5
2025 0.419 155.1
2026 0.516 157.3
2027 0.605 158.8
2028 0.686 160.0
2029 0.760 160.9
2030 0.827 161.6

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