16253-4909 COO 197AB

 
 
16h 25m 17.59s -49 08' 52.3" P.A. 90.2 sep 2.4 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
2018
Obs
60
Pa first
207
Pa last
89
P.A. Now (θ)
90.2°
Sep first
1.6
Sep last
2.4
Sep. Now (ρ)
2.4"
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 COO 197 AB 1895 2018 60 90 2.4 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 2018 11 182 0.1 8.23 Y
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
89.4
Precise sep
2.395
Constellation
Norma
SAO
226738
HIP
80448
Tycho2
8320-02096-1
Gaia DR2
5941405213211343616
HD
147633
CD
CD-4810809
CP
CP-48 8449
Distance
46.99
Distance ly
153.28
last precise pa
89.4
last precise sep
2.395
 
 
ORBITAL ELEMENTS
 
 
Period (P)1950y Periastron (T)1926.58y Semi-major axis (a)4.644a
Eccentricity (e)0.63 Inclination (i)152.1° Longitude of periastron (ω)267.9°
Node (Ω)75.5° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 2.150 100.3
2001 2.163 99.7
2002 2.176 99.1
2003 2.189 98.6
2004 2.202 98.0
2005 2.215 97.4
2006 2.228 96.9
2007 2.242 96.3
2008 2.255 95.8
2009 2.268 95.3
2010 2.281 94.7
2011 2.294 94.2
2012 2.307 93.7
2013 2.320 93.2
2014 2.333 92.7
2015 2.346 92.2
2016 2.359 91.7
2017 2.372 91.2
2018 2.385 90.7
2019 2.398 90.2
2020 2.411 89.8
2021 2.424 89.3
2022 2.437 88.8
2023 2.450 88.4
2024 2.463 87.9
2025 2.476 87.5
2026 2.489 87.0
2027 2.501 86.6
2028 2.514 86.2
2029 2.527 85.7
2030 2.540 85.3

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

grafico orbita





wds16253-4909d.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
16253-4909 COO 197 AB 2017 57 91 2.4 8.11 8.23 K0/1V NO 162517.59-490852.3
16253-4909 COO 197 AB 2018 60 89 2.4 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.