15432-4443 I   403

 
 
15h 43m 11.86s -44 43' 12.4" P.A. 251 sep 0.4 mag 9.22,9.92 Sp K2V dist. 35.87 pc (117.01 l.y.)
 
 
Coord 2000
15432-4443
Discov num
I   403
Comp
Coord arcsec 2000
15 43 11.86 -44 43 12.4
Date first
1901
Date last
2017
Obs
13
Pa first
197
Pa last
251
P.A. Now (θ)
251°
Sep first
1.2
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
9.22
Mag sec
9.92
delta mag (ΔM)
0.7
Spectral class
K2V (yellow-orange)
Pri motion ra
-144
Sec motion ra
-144
Pri motion dec
-134
Sec motion dec
-134
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
250.6
Precise sep
0.375
Cdsa2 id
I 403
Constellation
Lupus
SAO
226108
HIP
76990
Tycho2
7849-01177-1
HD
140011
CD
CD-4410336
CP
CP-44 7550
Ra deg
15.719961111111111
De deg
-44.720111111111116
Distance
35.87
Distance ly
117.01
last precise pa
250.6
last precise sep
0.375
 
 
ORBITAL ELEMENTS
 
 
Period (P)225.7y Periastron (T)2086.2y Semi-major axis (a)1.11a
Eccentricity (e)0.5 Inclination (i)78° Longitude of periastron (ω)52°
Node (Ω)16.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2017
label rho theta
2000 0.655 224.9
2001 0.638 225.8
2002 0.621 226.7
2003 0.604 227.6
2004 0.587 228.6
2005 0.571 229.7
2006 0.554 230.8
2007 0.537 232.0
2008 0.521 233.2
2009 0.504 234.6
2010 0.488 236.0
2011 0.472 237.6
2012 0.456 239.2
2013 0.441 241.0
2014 0.425 242.8
2015 0.411 244.9
2016 0.396 247.0
2017 0.382 249.4
2018 0.369 251.9
2019 0.356 254.6
2020 0.344 257.5
2021 0.332 260.6
2022 0.322 263.9
2023 0.313 267.4
2024 0.305 271.1
2025 0.298 275.0
2026 0.292 279.1
2027 0.288 283.3
2028 0.285 287.6
2029 0.284 292.0
2030 0.284 296.4

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

grafico orbita





wds15432-4443a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15432-4443 I 403 1991 10 225 0.9 9.22 9.92 K2V D 154311.86-444312.4
15432-4443 I 403 2001 11 226 0.6 9.22 9.92 K2V D 154311.86-444312.4
15432-4443 I 403 2014 12 64 0.4 9.22 9.92 K2V 154311.86-444312.4
15432-4443 I 403 2017 13 251 0.4 9.22 9.92 K2V O 154311.86-444312.4

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