14575-2125 H N  28AB (H N 28AB)

 
 
14h 57m 28.00s -21 24' 55.7" P.A. 307.2 sep 25.99 mag 5.88,8.18 Sp K5Ve+M2V dist. 5.84 pc (19.05 l.y.)
 
 
Coord 2000
14575-2125
Discov num
H N  28
Comp
AB
Coord arcsec 2000
14 57 28.00 -21 24 55.7
Date first
1806
Date last
2018
Obs
160
Pa first
251
Pa last
306
P.A. Now (θ)
307.2°
Sep first
9.4
Sep last
25.0
Sep. Now (ρ)
25.99"
Mag pri
5.88
Mag sec
8.18
delta mag (ΔM)
2.3
Spectral class
K5Ve+M2V (yellow-orange/red)
Pri motion ra
+103
Sec motion ra
+010
Pri motion dec
-173
Sec motion dec
-017
Notes
N O P (See Notes, Orbital solution, 100-year proper motion)
rPM=0.902
This double is physical.
 
 
14575-2125 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show H N  28AB 183040 14575-2125 H N 28 AB 1806 2018 160 307 26.0 5.88 8.18 2.30 Y <===
Show 14575-2125 H N 28 AC 1878 2000 5 323 198.3 5.88 14.00 8.12
Show 14575-2125 H N 28 AD 1878 1998 4 344 259.8 5.88 13.85 7.97
Show 14575-2125 H N 28 AE 1878 1998 5 316 146.2 5.88 13.12 7.24
Show 14575-2125 H N 28 AF 1831 1998 8 326 364.4 5.88 12.22 6.34
Show 14575-2125 BUG 4 AG 1998 1998 1 316 258.3 5.88 18.00 12.12
Show 14575-2125 H N 28 Ba,Bb 1987 2018 26 208 0.2 8.18 9.80 1.62 Y
Show 14575-2125 BUG 4 BG 1998 1998 1 317 234.0 8.18 18.00 9.82
Octuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
306
Precise sep
25
Other name
H N 28AB
Var name
KX Lib
Constellation
Libra
SAO
183040
HIP
73184
Tycho2
6180-00855-1
HD
131977
HR
5568
ADS
9446
GL
Gl 570A
BD
BD-20 4125
Distance
5.84
Distance ly
19.05
last precise pa
306
last precise sep
25
 
 
ORBITAL ELEMENTS
 
 
Period (P)2130y Periastron (T)1689y Semi-major axis (a)32.34a
Eccentricity (e)0.2 Inclination (i)72.53° Longitude of periastron (ω)252.1°
Node (Ω)317.31° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1991
label rho theta
2000 24.750 305.7
2001 24.817 305.8
2002 24.885 305.9
2003 24.951 306.0
2004 25.018 306.0
2005 25.085 306.1
2006 25.151 306.2
2007 25.217 306.3
2008 25.283 306.4
2009 25.348 306.4
2010 25.413 306.5
2011 25.479 306.6
2012 25.543 306.7
2013 25.608 306.8
2014 25.672 306.8
2015 25.736 306.9
2016 25.800 307.0
2017 25.864 307.1
2018 25.927 307.2
2019 25.990 307.2
2020 26.053 307.3
2021 26.116 307.4
2022 26.178 307.5
2023 26.240 307.5
2024 26.302 307.6
2025 26.364 307.7
2026 26.425 307.8
2027 26.486 307.8
2028 26.547 307.9
2029 26.608 308.0
2030 26.668 308.1

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






wds14575-2125c.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
14575-2125 H N 28 AB 2002 155 306 25.1 5.88 8.18 K5Ve M2V NODP 145727.99-212455.8
14575-2125 H N 28 AB 2009 155 306 25.3 5.88 8.18 K5Ve M2V NODP 145727.99-212455.8
14575-2125 H N 28 AB 2011 155 305 25.6 5.88 8.18 K5Ve M2V NODP 145728.00-212455.7
14575-2125 H N 28 AB 2014 158 306 25.7 5.88 8.18 K5Ve M2V NODP 145728.00-212455.7
14575-2125 H N 28 AB 2018 160 306 25.0 5.88 8.18 K5Ve+M2V NO P 145728.00-212455.7

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