19377-4128 VOU  34

 
 
19h 37m 39.38s -41 27' 29.5" P.A. 314.2 sep 0.16 mag 8.67,8.34 Sp F3IV dist. 146.41 pc (477.59 l.y.)
 
 
Coord 2000
19377-4128
Discov num
VOU  34
Comp
Coord arcsec 2000
19 37 39.38 -41 27 29.5
Date first
1936
Date last
2017
Obs
14
Pa first
134
Pa last
314
P.A. Now (θ)
314.2°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.16"
Mag pri
8.67
Mag sec
8.34
delta mag (ΔM)
0.33
Spectral class
F3IV (yellow-white)
Pri motion ra
+017
Sec motion ra
Pri motion dec
-036
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
314.4
Precise sep
0.165
Constellation
Sagittarius
HIP
96545
HD
184732
Distance
146.41
Distance ly
477.59
last precise pa
314.4
last precise sep
0.165
 
 
ORBITAL ELEMENTS
 
 
Period (P)55y± 6.8 Periastron (T)2003.75y± 4.4 Semi-major axis (a)0.1642a± 0.0045
Eccentricity (e)0.02± 0.12 Inclination (i)96.9°± 1.1 Longitude of periastron (ω)86°± 29.4
Node (Ω)134.4°± 0.6 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.081 122.4
2001 0.065 118.4
2002 0.048 111.6
2003 0.032 97.6
2004 0.020 62.9
2005 0.023 11.1
2006 0.037 345.4
2007 0.053 334.6
2008 0.070 328.9
2009 0.086 325.4
2010 0.102 323.0
2011 0.116 321.2
2012 0.128 319.8
2013 0.139 318.6
2014 0.148 317.6
2015 0.155 316.7
2016 0.160 315.8
2017 0.163 315.0
2018 0.164 314.2
2019 0.163 313.4
2020 0.160 312.6
2021 0.155 311.8
2022 0.148 310.8
2023 0.138 309.8
2024 0.128 308.6
2025 0.116 307.2
2026 0.102 305.4
2027 0.087 303.0
2028 0.072 299.6
2029 0.056 294.3
2030 0.040 284.6

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

grafico orbita





wds19377-4128e.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
19377-4128 VOU 34 1991 9 135 0.2 8.67 8.34 F3IV 193739.38-412729.5
19377-4128 VOU 34 2009 11 144 0.1 8.67 8.34 F3IV 193739.38-412729.5
19377-4128 VOU 34 2015 12 316 0.2 8.67 8.34 F3IV 193739.38-412729.5
19377-4128 VOU 34 2017 14 314 0.2 8.67 8.34 F3IV 193739.38-412729.5

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