19253-2431 FIN 327 (Chi1 Sgr)

 
 
19h 25m 16.45s -24 30' 30.4" P.A. 64.1 sep 0.03 mag 5.80,5.80 Sp Am dist. 77.22 pc (251.89 l.y.)
 
 
Coord 2000
19253-2431
Discov num
FIN 327
Comp
Coord arcsec 2000
19 25 16.45 -24 30 30.4
Date first
1951
Date last
2017
Obs
63
Pa first
271
Pa last
77
P.A. Now (θ)
64.1°
Sep first
0.1
Sep last
0.0
Sep. Now (ρ)
0.03"
Mag pri
5.80
Mag sec
5.80
delta mag (ΔM)
0
Spectral class
Am (white)
Pri motion ra
+052
Sec motion ra
Pri motion dec
-055
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
77.1
Precise sep
0.045
Name
Chi1 Sgr
Constellation
Sagittarius
SAO
188101
HIP
95477
HD
182369
HR
7362
GC
26789
Bayer
Chi 1 Sagittarii
Bayer name
Chi1 Sgr
Flamsteed
47 Sagittarii
Flamsteed name
47 Sgr
Distance
77.22
Distance ly
251.89
last precise pa
77.1
last precise sep
0.045
 
 
ORBITAL ELEMENTS
 
 
Period (P)5.72y Periastron (T)1984.29y Semi-major axis (a)0.069a
Eccentricity (e)0.71 Inclination (i)97.3° Longitude of periastron (ω)10.7°
Node (Ω)259° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation1992
label rho theta
2000 0.080 73.9
2001 0.013 51.7
2002 0.038 86.7
2003 0.098 80.5
2004 0.116 78.2
2005 0.105 76.1
2006 0.065 72.5
2007 0.014 271.5
2008 0.061 83.6
2009 0.106 79.8
2010 0.116 77.7
2011 0.097 75.4
2012 0.047 70.0
2013 0.011 245.4
2014 0.078 82.0
2015 0.112 79.1
2016 0.114 77.1
2017 0.087 74.5
2018 0.026 64.1
2019 0.022 91.7
2020 0.092 81.0
2021 0.116 78.6
2022 0.109 76.5
2023 0.074 73.4
2024 0.005 354.8
2025 0.048 85.0
2026 0.102 80.2
2027 0.117 78.0
2028 0.102 75.8
2029 0.058 71.6
2030 0.020 260.9

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

grafico orbita





wds19253-2431a.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
19253-2431 FIN 327 1992 52 80 0.1 5.80 5.80 Am NO 192516.45-243030.4
19253-2431 FIN 327 2008 57 81 0.1 5.80 5.80 Am NO 192516.45-243030.4
19253-2431 FIN 327 2013 59 87 0.1 5.80 5.80 Am NO 192516.45-243030.4
19253-2431 FIN 327 2014 61 81 0.1 5.80 5.80 Am NO 192516.45-243030.4
19253-2431 FIN 327 2015 62 80 0.1 5.80 5.80 Am NO 192516.45-243030.4
19253-2431 FIN 327 2017 63 77 0.0 5.80 5.80 Am NO 192516.45-243030.4

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