16253-4909 COO 197AB

 
 
16h 25m 17.59s -49 08' 52.3" P.A. 92.4 sep 2.34 mag 8.11,8.23 Sp K0/1V dist. 46.99 pc (153.28 l.y.)
 
 
Coord 2000
16253-4909
Discov num
COO 197
Comp
AB
Coord arcsec 2000
16 25 17.59 -49 08 52.3
Date first
1895
Date last
2016
Obs
56
Pa first
207
Pa last
93
P.A. Now (θ)
92.4°
Sep first
1.6
Sep last
2.5
Sep. Now (ρ)
2.34"
Mag pri
8.11
Mag sec
8.23
delta mag (ΔM)
0.12
Spectral class
K0/1V (yellow-orange)
Pri motion ra
-092
Sec motion ra
-092
Pri motion dec
-092
Sec motion dec
-084
Notes
N O (See Notes, Orbital solution)
rPM=0.061 (< 0.3, Physical double)
This double is physical.
 
 
16253-4909 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 226738 16253-4909 TOK 50 Aa,Ab 2009 2015 8 166 0.1 7.30 9.20 1.90
Show 226738 16253-4909 COO 197 AB 1895 2016 56 92 2.3 8.11 8.23 0.12 Y <===
Show 226738 16253-4909 COO 197 AC 1895 2010 16 77 20.7 8.11 12.00 3.89
Show 226738 16253-4909 CVN 27 Ba,Bb 2004 2004 1 38 0.1 8.23
Quintuple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
93.2
Precise sep
2.53
Constellation
Norma
SAO
226738
HIP
80448
Tycho2
8320-02096-1
HD
147633
CD
CD-4810809
CP
CP-48 8449
Distance
46.99
Distance ly
153.28
last precise pa
93.2
last precise sep
2.53
 
 
ORBITAL ELEMENTS
 
 
Period (P)1132y Periastron (T)1909.8y Semi-major axis (a)3.37a
Eccentricity (e)0.549 Inclination (i)159.6° Longitude of periastron (ω)180.5°
Node (Ω)9.3° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 2.144 102.0
2001 2.156 101.4
2002 2.167 100.8
2003 2.179 100.2
2004 2.190 99.6
2005 2.202 99.0
2006 2.213 98.4
2007 2.225 97.9
2008 2.236 97.3
2009 2.248 96.7
2010 2.260 96.2
2011 2.271 95.6
2012 2.283 95.1
2013 2.295 94.5
2014 2.306 94.0
2015 2.318 93.5
2016 2.330 92.9
2017 2.342 92.4
2018 2.353 91.9
2019 2.365 91.4
2020 2.377 90.9
2021 2.389 90.4
2022 2.401 89.9
2023 2.413 89.4
2024 2.424 88.9
2025 2.436 88.5
2026 2.448 88.0
2027 2.460 87.5
2028 2.472 87.0
2029 2.484 86.6
2030 2.495 86.1

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

grafico orbita





wds16253-4909b.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
16253-4909 COO 197 AB 1991 44 109 2.1 8.11 8.23 K0/1V NOD 162517.67-490851.5
16253-4909 COO 197 AB 2009 45 97 2.3 8.11 8.23 K0/1V NOD 162517.67-490851.5
16253-4909 COO 197 AB 2011 47 97 2.3 8.11 8.23 K0/1V NOD 162517.59-490852.2
16253-4909 COO 197 AB 2012 49 96 2.3 8.11 8.23 K0/1V NOD 162517.59-490852.2
16253-4909 COO 197 AB 2014 53 94 2.4 8.11 8.23 K0/1V O 162517.59-490852.2
16253-4909 COO 197 AB 2015 54 93 2.4 8.11 8.23 K0/1V O 162517.59-490852.2
16253-4909 COO 197 AB 2016 56 93 2.5 8.11 8.23 K0/1V NO 162517.59-490852.3

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