19172-6640 GLE   3

 
 
19h 17m 12.25s -66 39' 39.8" P.A. 353.5 sep 0.53 mag 6.12,6.42 Sp A5V+A8V dist. 91.58 pc (298.73 l.y.)
 
 
Coord 2000
19172-6640
Discov num
GLE   3
Comp
Coord arcsec 2000
19 17 12.25 -66 39 39.8
Date first
1894
Date last
2016
Obs
41
Pa first
40
Pa last
351
P.A. Now (θ)
353.5°
Sep first
0.5
Sep last
0.6
Sep. Now (ρ)
0.53"
Mag pri
6.12
Mag sec
6.42
delta mag (ΔM)
0.3
Spectral class
A5V+A8V (white/white)
Pri motion ra
+017
Sec motion ra
+017
Pri motion dec
-003
Sec motion dec
-003
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
351.1
Precise sep
0.55
Constellation
Pavo
SAO
254515
HIP
94789
Tycho2
9083-01820-1
HD
179366
HR
7278
Distance
91.58
Distance ly
298.73
last precise pa
351.1
last precise sep
0.55
 
 
ORBITAL ELEMENTS
 
 
Period (P)156.8y± 8 Periastron (T)1950.69y± 0.5 Semi-major axis (a)0.539a± 0.05
Eccentricity (e)0.568± 0.02 Inclination (i)50.8°± 1 Longitude of periastron (ω)98°± 2
Node (Ω)84.5°± 2 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation1991
label rho theta
2000 0.506 330.1
2001 0.507 331.4
2002 0.508 332.8
2003 0.509 334.1
2004 0.510 335.4
2005 0.511 336.8
2006 0.512 338.1
2007 0.514 339.4
2008 0.515 340.7
2009 0.516 342.0
2010 0.517 343.3
2011 0.518 344.6
2012 0.519 345.9
2013 0.520 347.2
2014 0.521 348.5
2015 0.523 349.8
2016 0.524 351.0
2017 0.525 352.3
2018 0.526 353.5
2019 0.528 354.8
2020 0.529 356.0
2021 0.530 357.3
2022 0.532 358.5
2023 0.533 359.7
2024 0.535 0.9
2025 0.536 2.2
2026 0.537 3.4
2027 0.539 4.6
2028 0.540 5.7
2029 0.542 6.9
2030 0.543 8.1

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

grafico orbita





wds19172-6640a.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
19172-6640 GLE 3 1999 34 329 0.5 6.12 6.42 A5V+A8V NOD 191712.25-663939.8
19172-6640 GLE 3 2008 35 340 0.5 6.12 6.42 A5V+A8V NOD 191712.25-663939.8
19172-6640 GLE 3 2009 37 343 0.5 6.12 6.42 A5V A8V NOD 191712.25-663939.8
19172-6640 GLE 3 2013 38 350 0.5 6.12 6.42 A5V A8V NO 191712.25-663939.8
19172-6640 GLE 3 2016 41 351 0.6 6.12 6.42 A5V+A8V NO 191712.25-663939.8

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