19491-6149 I 120 AB

 
 
19h 49m 07.25s -61 48' 53.2" P.A. 166.00 sep 0.4 mag 8.31,8.02 Sp F7/8V dist. 56.31 pc (183.68 l.y.)
 
 
Coord 2000 19491-6149 Discov num I   120 Comp AB Coord arcsec 2000 19 49 07.25 -61 48 53.2
Date first 1896 Date last 2019 Obs 59
Pa first 185 Pa last 165.8 P.A. Now (θ) 160.1°
Sep first 0.8 Sep last 0.445 Sep. Now (ρ) 0.472"
Mag pri 8.31 Mag sec 8.02 delta mag (ΔM) 0.29 Spectral class F7/8V (yellow-white)
Pri motion ra +038 Sec motion ra
Pri motion dec -096 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
19491-6149 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 254655 19 49 07 -61 48 53 I 120 AB 2019 59 166 0.4 8.31 8.02 0.29 Y <===
Show 254655 19 49 07 -61 48 53 HJ 5141 AB,C 2020 17 340 14.0 7.36 10.45 3.09
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pavo SAO 254655 HIP 97508 Tycho2 9085-00729-1
HD 186602 GC 27374 CP CP-62 6108 Distance 56.31
Distance ly 183.68
 
 
ORBITAL ELEMENTS
 
 
Period (P)64.09y Periastron (T)1996.49y Semi-major axis (a)0.324a
Eccentricity (e)0.687 Inclination (i)141.2° Longitude of periastron (ω)139.5°
Node (Ω)118.7° Notesn ReferenceTok2018b
Equinox2000 Last observation2017 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 252.0 0.156
2001 239.5 0.173
2002 229.3 0.190
2003 220.9 0.208
2004 213.8 0.226
2005 207.7 0.244
2006 202.5 0.261
2007 197.9 0.279
2008 193.8 0.295
2009 190.2 0.312
2010 186.9 0.327
2011 184.0 0.342
2012 181.2 0.357
2013 178.7 0.371
2014 176.4 0.384
2015 174.2 0.396
2016 172.1 0.408
2017 170.2 0.419
2018 168.3 0.430
2019 166.5 0.440
2020 164.8 0.449
2021 163.2 0.457
2022 161.6 0.465
2023 160.1 0.472
2024 158.7 0.479
2025 157.2 0.485
2026 155.8 0.490
2027 154.4 0.494
2028 153.1 0.498
2029 151.7 0.501
2030 150.4 0.503


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



 
 


wds19491-6149b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic