16039-2032 KOH  70AB

 
 
16h 03m 54.98s -20 31' 38.2" P.A. 267.4 sep 0.1 mag 8.62,8.71 Sp M0
 
 
Coord 2000
16039-2032
Discov num
KOH  70
Comp
AB
Coord arcsec 2000
16 03 54.98 -20 31 38.2
Date first
1994
Date last
2018
Obs
5
Pa first
141
Pa last
94
P.A. Now (θ)
267.4°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
8.62
Mag sec
8.71
delta mag (ΔM)
0.09
Spectral class
M0 (red)
Pri motion ra
-006
Sec motion ra
Pri motion dec
-028
Sec motion dec
Notes
O V K (Orbital solution, Proper motion indicates physical, K-band or other infrared magnitudes)
This double is physical.
 
 
16039-2032 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 16039-2032 KOH 70 AB 1994 2018 5 267 0.1 8.62 8.71 0.09 Y <===
Show 16039-2032 KOH 70 AB,C 1996 1996 1 82 4.0 8.62 13.90 5.28
Show 16039-2032 LAF 99 AD 2008 2010 2 203 2.8 8.62 19.35 10.73
Show 16039-2032 LAF 99 AE 2008 2008 1 217 3.3 8.62 18.77 10.15
Show 16039-2032 LAF 99 AF 2008 2015 3 354 4.3 8.62 13.37 4.75
Sextuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
93.9
Precise sep
0.097
Constellation
Scorpius
Gaia DR2
39015457152
last precise pa
93.9
last precise sep
0.097
 
 
ORBITAL ELEMENTS
 
 
Period (P)52.6y Periastron (T)2006.3y Semi-major axis (a)0.116a
Eccentricity (e)0.3 Inclination (i)136.4° Longitude of periastron (ω)127.5°
Node (Ω)147.6° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.081 102.9
2001 0.073 92.2
2002 0.067 79.2
2003 0.063 64.0
2004 0.061 47.3
2005 0.063 30.5
2006 0.066 15.2
2007 0.072 1.8
2008 0.078 350.4
2009 0.083 340.5
2010 0.087 331.7
2011 0.091 323.7
2012 0.093 316.2
2013 0.095 309.0
2014 0.096 302.0
2015 0.096 295.1
2016 0.096 288.2
2017 0.096 281.3
2018 0.096 274.3
2019 0.096 267.4
2020 0.096 260.4
2021 0.097 253.6
2022 0.098 246.9
2023 0.100 240.3
2024 0.101 234.0
2025 0.104 228.0
2026 0.106 222.2
2027 0.109 216.8
2028 0.112 211.6
2029 0.115 206.6
2030 0.118 202.0

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

grafico orbita





wds16039-2032a.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
16039-2032 KOH 70 AB 1998 2 113 0.1 9.49 9.94 K 160354.98-203138.2
16039-2032 KOH 70 AB 2008 3 346 0.1 8.62 8.71 M0 V K 160354.98-203138.2
16039-2032 KOH 70 AB 2018 5 94 0.1 8.62 8.71 M0 V K 160354.98-203138.2

If you need more information about this double, apply for a data request form to the WDS.