19491-6149 I   120AB

 
 
19h 49m 07.25s -61 48' 53.2" P.A. 171.1 sep 0.47 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
2017
Obs
56
Pa first
185
Pa last
169
P.A. Now (θ)
171.1°
Sep first
0.8
Sep last
0.4
Sep. Now (ρ)
0.47"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 19491-6149 I 120 AB 1896 2017 56 171 0.5 8.31 8.02 0.29 Y <===
Show 19491-6149 HJ 5141 AB,C 1836 2013 16 340 11.8 7.36 10.45 3.09
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
168.8
Precise sep
0.425
Cdsa2 id
I 120 AB
Constellation
Pavo
HIP
97508
HD
186602
Ra deg
19.818680555555556
De deg
-61.81477777777778
Distance
56.31
Distance ly
183.68
last precise pa
168.8
last precise sep
0.425
 
 
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° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2017
label rho theta
2000 0.156 252.0
2001 0.173 239.5
2002 0.190 229.3
2003 0.208 220.9
2004 0.226 213.8
2005 0.244 207.7
2006 0.261 202.5
2007 0.279 197.9
2008 0.295 193.8
2009 0.312 190.2
2010 0.327 186.9
2011 0.342 184.0
2012 0.357 181.2
2013 0.371 178.7
2014 0.384 176.4
2015 0.396 174.2
2016 0.408 172.1
2017 0.419 170.2
2018 0.430 168.3
2019 0.440 166.5
2020 0.449 164.8
2021 0.457 163.2
2022 0.465 161.6
2023 0.472 160.1
2024 0.479 158.7
2025 0.485 157.2
2026 0.490 155.8
2027 0.494 154.4
2028 0.498 153.1
2029 0.501 151.7
2030 0.503 150.4

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

grafico orbita





wds19491-6149b.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
19491-6149 I 120 AB 1991 52 277 0.2 8.31 8.02 F7/8V NO 194907.25-614853.2
19491-6149 I 120 AB 2009 53 189 0.3 8.31 8.02 F7/8V NO 194907.25-614853.2
19491-6149 I 120 AB 2013 54 188 0.4 8.31 8.02 F7/8V NO 194907.25-614853.2
19491-6149 I 120 AB 2014 55 176 0.4 8.31 8.02 F7/8V NO 194907.25-614853.2
19491-6149 I 120 AB 2017 56 169 0.4 8.31 8.02 F7/8V NO 194907.25-614853.2

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