19553-0644 STF2597AB

 
 
19h 55m 19.49s -06 44' 04.7" P.A. 99.9 sep 0.71 mag 6.94,7.98 Sp F2V dist. 81.83 pc (266.93 l.y.)
 
 
Coord 2000
19553-0644
Discov num
STF2597
Comp
AB
Coord arcsec 2000
19 55 19.49 -06 44 04.7
Date first
1826
Date last
2017
Obs
142
Pa first
92
Pa last
101
P.A. Now (θ)
99.9°
Sep first
1.9
Sep last
0.6
Sep. Now (ρ)
0.71"
Mag pri
6.94
Mag sec
7.98
delta mag (ΔM)
1.04
Spectral class
F2V (yellow-white)
Pri motion ra
+030
Sec motion ra
Pri motion dec
-062
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
19553-0644 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 143911 19553-0644 STF2597 AB 1826 2017 142 100 0.7 6.94 7.98 1.04 Y <===
Show 19553-0644 BOW 8 AC -1 -1 0 6.94
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
100.8
Precise sep
0.647
Cdsa2 id
STF 2597 AB
Constellation
Aquila
SAO
143911
HIP
98038
HD
188405
HR
7599
ADS
13104
Ra deg
19.922080555555556
De deg
-6.734638888888889
Distance
81.83
Distance ly
266.93
last precise pa
100.8
last precise sep
0.647
 
 
ORBITAL ELEMENTS
 
 
Period (P)425y± 22 Periastron (T)1974.28y± 0.23 Semi-major axis (a)1.085a± 0.024
Eccentricity (e)0.9414± 0.002 Inclination (i)103.05°± 0.84 Longitude of periastron (ω)327.9°± 1.7
Node (Ω)264.03°± 0.77 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.445 104.1
2001 0.461 103.7
2002 0.478 103.4
2003 0.494 103.1
2004 0.510 102.8
2005 0.525 102.5
2006 0.541 102.2
2007 0.556 102.0
2008 0.571 101.7
2009 0.586 101.5
2010 0.601 101.3
2011 0.616 101.1
2012 0.630 100.9
2013 0.644 100.7
2014 0.658 100.5
2015 0.672 100.3
2016 0.686 100.2
2017 0.700 100.0
2018 0.713 99.9
2019 0.727 99.7
2020 0.740 99.6
2021 0.753 99.4
2022 0.766 99.3
2023 0.779 99.2
2024 0.791 99.1
2025 0.804 98.9
2026 0.816 98.8
2027 0.829 98.7
2028 0.841 98.6
2029 0.853 98.5
2030 0.865 98.4

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

grafico orbita





wds19553-0644a.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
19553-0644 STF2597 AB 2006 133 102 0.5 6.94 7.98 F2V NOD 195519.49-064404.7
19553-0644 STF2597 AB 2008 135 101 0.6 6.94 7.98 F2V NOD 195519.49-064404.7
19553-0644 STF2597 AB 2010 138 101 0.6 6.94 7.98 F2V NOD 195519.49-064404.7
19553-0644 STF2597 AB 2014 139 99 0.7 6.94 7.98 F2V NO 195519.49-064404.7
19553-0644 STF2597 AB 2017 142 101 0.6 6.94 7.98 F2V NO 195519.49-064404.7

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