19540+1518 STF2596

 
 
19h 54m 01.95s +15 17' 31.7" P.A. 296.30 sep 2.0 mag 7.29,8.68 Sp F8V dist. 82.58 pc (269.38 l.y.)
 
 
Coord 2000
19540+1518
Discov num
STF2596
Comp
Coord arcsec 2000
19 54 01.95 +15 17 31.7
Date first
1828
Date last
2016
Obs
190
Pa first
355
Pa last
297
P.A. Now (θ)
296.3°
Sep first
2.1
Sep last
2.1
Sep. Now (ρ)
1.97"
Mag pri
7.29
Mag sec
8.68
delta mag (ΔM)
1.39
Spectral class
F8V (yellow-white)
Pri motion ra
-012
Sec motion ra
-012
Pri motion dec
-009
Sec motion dec
-009
Notes
O (Orbital solution)
Visually invisible, K-band or other infrared star This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
297.3
Precise sep
2.147
Constellation
Aquila
SAO
105396
HIP
97922
Tycho2
1616-00256-1
Gaia DR2
95307811712
HD
188328
ADS
13082
BD
BD+14 4083
Distance
82.58
Distance ly
269.38
last precise pa
297.3
last precise sep
2.147
 
 
ORBITAL ELEMENTS
 
 
Period (P)2971.0861y± 1397.0172 Periastron (T)2354.1964y± 226.1355 Semi-major axis (a)8.50966a± 4.29319
Eccentricity (e)0.8412± 0.12277 Inclination (i)102.104°± 6.864 Longitude of periastron (ω)242.962°± 19.747
Node (Ω)54.788°± 25.109 Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2015
label rho theta
2000 1.963 301.7
2001 1.963 301.5
2002 1.963 301.2
2003 1.964 300.9
2004 1.964 300.7
2005 1.964 300.4
2006 1.965 300.2
2007 1.965 299.9
2008 1.966 299.7
2009 1.966 299.4
2010 1.967 299.1
2011 1.967 298.9
2012 1.968 298.6
2013 1.968 298.4
2014 1.969 298.1
2015 1.969 297.9
2016 1.970 297.6
2017 1.971 297.3
2018 1.972 297.1
2019 1.972 296.8
2020 1.973 296.6
2021 1.974 296.3
2022 1.975 296.1
2023 1.976 295.8
2024 1.977 295.6
2025 1.977 295.3
2026 1.978 295.1
2027 1.979 294.8
2028 1.980 294.5
2029 1.982 294.3
2030 1.983 294.0

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






wds19540%2B1518a.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
19540+1518 STF2596 2005 191 301 2.0 7.29 8.68 F8V D 195401.95+151731.7
19540+1518 STF2596 2007 193 300 2.1 7.29 8.68 F8V D 195401.95+151731.7
19540+1518 STF2596 2010 195 299 1.8 7.29 8.68 F8V D 195401.95+151731.7
19540+1518 STF2596 2011 198 298 2.0 7.29 8.68 F8V 195401.95+151731.7
19540+1518 STF2596 2012 186 298 2.0 7.29 8.68 F8V 195401.95+151731.7
19540+1518 STF2596 2013 187 298 2.0 7.29 8.68 F8V 195401.95+151731.7
19540+1518 STF2596 2014 188 297 2.1 7.29 8.68 F8V 195401.95+151731.7
19540+1518 STF2596 2016 189 297 2.1 7.29 8.68 F8V 195401.95+151731.7

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