19531-1436 CHR  90 (V505 Sgr)

 
 
19h 53m 06.39s -14 36' 11.1" P.A. 4.4 sep 0.31 mag 9.25,6.61 Sp A0V+F8IV dist. 119.05 pc (388.34 l.y.)
 
 
Coord 2000
19531-1436
Discov num
CHR  90
Comp
Coord arcsec 2000
19 53 06.39 -14 36 11.1
Date first
1985
Date last
2015
Obs
25
Pa first
190
Pa last
190
P.A. Now (θ)
4.4°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.31"
Mag pri
9.25
Mag sec
6.61
delta mag (ΔM)
2.64
Spectral class
A0V+F8IV (white/yellow-white)
Pri motion ra
-001
Sec motion ra
Pri motion dec
-058
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
190.1
Precise sep
0.35
Var name
V505 Sgr
Constellation
Sagittarius
SAO
163080
HIP
97849
Tycho2
5737-00439-1
HD
187949
HR
7571
BD
BD-14 5578
Distance
119.05
Distance ly
388.34
last precise pa
190.1
last precise sep
0.35
 
 
ORBITAL ELEMENTS
 
 
Period (P)94.24y± 0.72 Periastron (T)2000.45y± 0.7 Semi-major axis (a)0.333a± 0.004
Eccentricity (e)0.308± 0.007 Inclination (i)120.4°± 0.4 Longitude of periastron (ω)272.3°± 1.8
Node (Ω)10.1°± 0.5 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.117 102.3
2001 0.119 87.5
2002 0.127 73.8
2003 0.139 62.2
2004 0.155 52.7
2005 0.172 45.0
2006 0.189 38.8
2007 0.206 33.5
2008 0.223 29.1
2009 0.238 25.3
2010 0.252 21.9
2011 0.265 18.8
2012 0.276 16.0
2013 0.286 13.5
2014 0.295 11.0
2015 0.302 8.8
2016 0.307 6.6
2017 0.312 4.4
2018 0.315 2.4
2019 0.317 0.3
2020 0.318 358.3
2021 0.318 356.3
2022 0.318 354.3
2023 0.316 352.2
2024 0.314 350.2
2025 0.311 348.1
2026 0.307 346.0
2027 0.303 343.8
2028 0.298 341.5
2029 0.293 339.2
2030 0.288 336.8

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

grafico orbita





wds19531-1436f.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
19531-1436 CHR 90 2006 18 216 0.2 9.25 6.61 A0V+F8IV NOD 195306.39-143611.1
19531-1436 CHR 90 2009 19 204 0.2 9.25 6.61 A0V+F8IV NOD 195306.39-143611.1
19531-1436 CHR 90 2010 24 200 0.3 9.25 6.61 A0V+F8IV NOD 195306.39-143611.1
19531-1436 CHR 90 2015 25 10 0.4 9.25 6.61 A0V+F8IV NO 195306.39-143611.1

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