18323-1439 CHR  73

 
 
18h 32m 20.66s -14 38' 39.2" P.A. 149 sep 0.02 mag 6.60,8.30 Sp A4V dist. 82.17 pc (268.04 l.y.)
 
 
Coord 2000
18323-1439
Discov num
CHR  73
Comp
Coord arcsec 2000
18 32 20.66 -14 38 39.2
Date first
1985
Date last
2017
Obs
13
Pa first
41
Pa last
214
P.A. Now (θ)
149°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0.02"
Mag pri
6.60
Mag sec
8.30
delta mag (ΔM)
1.7
Spectral class
A4V (white)
Pri motion ra
+003
Sec motion ra
Pri motion dec
-027
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
214.4
Precise sep
0.044
Cdsa2 id
CHR 73
Constellation
Scutum
SAO
161580
HIP
90884
Tycho2
5703-02421-1
HD
170902
HR
6956
BD
BD-14 5098
Ra deg
18.539072222222224
De deg
-14.644222222222222
Distance
82.17
Distance ly
268.04
last precise pa
214.4
last precise sep
0.044
 
 
ORBITAL ELEMENTS
 
 
Period (P)5.628y Periastron (T)2012.269y Semi-major axis (a)0.056a
Eccentricity (e)0.218 Inclination (i)118.3° Longitude of periastron (ω)72.8°
Node (Ω)225.1° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2017
label rho theta
2000 0.052 233.2
2001 0.024 170.4
2002 0.051 54.6
2003 0.055 25.6
2004 0.034 335.3
2005 0.043 258.4
2006 0.047 219.5
2007 0.025 99.7
2008 0.058 43.1
2009 0.047 12.5
2010 0.032 302.4
2011 0.050 242.4
2012 0.035 199.2
2013 0.041 65.9
2014 0.058 33.0
2015 0.039 353.6
2016 0.038 273.1
2017 0.051 229.1
2018 0.021 149.0
2019 0.054 50.6
2020 0.053 21.9
2021 0.033 325.5
2022 0.045 252.9
2023 0.044 214.4
2024 0.030 85.2
2025 0.059 39.9
2026 0.045 7.4
2027 0.033 292.4
2028 0.051 238.2
2029 0.030 188.7
2030 0.046 60.2

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

grafico orbita





wds18323-1439e.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
18323-1439 CHR 73 1992 5 349 0.0 6.37   A4V NO 183220.66-143839.2
18323-1439 CHR 73 2009 8 359 0.0 6.37   A4V NO 183220.66-143839.2
18323-1439 CHR 73 2013 11 219 0.1 6.60 8.30 A4V NO 183220.66-143839.2
18323-1439 CHR 73 2014 12 206 0.1 6.60 8.30 A4V NO 183220.66-143839.2
18323-1439 CHR 73 2017 13 214 0.0 6.60 8.30 A4V NO 183220.66-143839.2

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