19453-6823 HDS2806AB

 
 
19h 45m 15.54s -68 23' 22.3" P.A. 117.00 sep 0.4 mag 10.34,12.97 Sp K3 dist. 46.86 pc (152.86 l.y.)
 
 
Coord 2000
19453-6823
Discov num
HDS2806
Comp
AB
Coord arcsec 2000
19 45 15.54 -68 23 22.3
Date first
1991
Date last
2020
Obs
18
Pa first
298
Pa last
118
P.A. Now (θ)
117°
Sep first
0.3
Sep last
0.4
Sep. Now (ρ)
0.38"
Mag pri
10.34
Mag sec
12.97
delta mag (ΔM)
2.63
Spectral class
K3 (yellow-orange)
Pri motion ra
+111
Sec motion ra
Pri motion dec
+134
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
19453-6823 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 19 45 16 -68 23 22 HDS 2806 AB 2020 18 117 0.4 10.34 12.97 2.63 Y <===
Show 19 45 16 -68 23 22 TOK 425 Ba,Bb 2020 14 94 0.0 13.20 15.00 1.80 Y
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
117.8
Precise sep
0.36
Constellation
Pavo
HIP
97196
Tycho2
9306-01188-1
Gaia DR2
6426760779929152896
HD
185655
CP
CP-68 3294
Distance
46.86
Distance ly
152.86
last precise pa
117.8
last precise sep
0.36
 
 
ORBITAL ELEMENTS
 
 
Period (P)84.4y± 1.8 Periastron (T)2001.55y± 0.86 Semi-major axis (a)0.475a± 0.027
Eccentricity (e)0.252± 0.016 Inclination (i)140° Longitude of periastron (ω)336.2°± 1.9
Node (Ω)204°± 2.6 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000 0.331 232.4
2001 0.339 226.0
2002 0.346 220.0
2003 0.353 214.1
2004 0.358 208.5
2005 0.362 203.0
2006 0.365 197.6
2007 0.367 192.3
2008 0.367 187.0
2009 0.367 181.7
2010 0.366 176.4
2011 0.364 171.0
2012 0.363 165.6
2013 0.361 160.2
2014 0.360 154.7
2015 0.360 149.2
2016 0.360 143.7
2017 0.361 138.2
2018 0.363 132.7
2019 0.366 127.3
2020 0.370 122.1
2021 0.376 117.0
2022 0.382 112.0
2023 0.389 107.2
2024 0.398 102.6
2025 0.406 98.2
2026 0.416 93.9
2027 0.426 89.9
2028 0.436 86.1
2029 0.447 82.4
2030 0.458 78.9


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



 
 


wds19453-6823c.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
19453-6823 HDS2806 AB 2014 3 332 0.3 10.34 12.97 K3 194515.54-682322.3
19453-6823 HDS2806 AB 2015 5 147 0.3 10.34 12.97 K3 194515.54-682322.3
19453-6823 HDS2806 AB 2017 7 135 0.4 10.34 12.97 K3 N 194515.54-682322.3
19453-6823 HDS2806 AB 2018 12 128 0.3 10.34 12.97 K3 N 194515.54-682322.3
19453-6823 HDS2806 AB 2019 14 123 0.3 10.34 12.97 K3 N 194515.54-682322.3

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