19531-1436 CHR 90 (V505 Sgr)

 
 
19h 53m 06.39s -14 36' 11.1" P.A. 182.00 sep 0.4 mag 9.25,6.61 Sp A2V+G5IV 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 2021 Obs 27
Pa first 190 Pa last 182.3 P.A. Now (θ) 182.3°
Sep first 0.3 Sep last 0.422 Sep. Now (ρ) 0.422"
Mag pri 9.25 Mag sec 6.61 delta mag (ΔM) 2.64 Spectral class A2V+G5IV (white/yellow)
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
 
 
Var name V505 Sgr Constellation Sagittarius SAO 163080 HIP 97849
Tycho2 5737-00439-1 Gaia DR2 6878492245986475904 HD 187949 HR 7571
GC 27525 BD BD-14 5578 Distance 119.05 Distance ly 388.34
 
 
ORBITAL ELEMENTS
 
 
Period (P)343.2y Periastron (T)1998.85y Semi-major axis (a)0.678a
Eccentricity (e)0.716 Inclination (i)126.5° Longitude of periastron (ω)73.5°
Node (Ω)3.3° Notesn ReferenceTok2019c
Equinox Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 283.5 0.117
2001 268.7 0.117
2002 254.9 0.124
2003 243.0 0.136
2004 233.2 0.151
2005 225.3 0.168
2006 218.9 0.186
2007 213.6 0.204
2008 209.2 0.223
2009 205.5 0.241
2010 202.3 0.259
2011 199.5 0.277
2012 197.0 0.293
2013 194.8 0.310
2014 192.8 0.325
2015 191.0 0.341
2016 189.4 0.355
2017 187.8 0.369
2018 186.4 0.383
2019 185.1 0.396
2020 183.9 0.409
2021 182.7 0.421
2022 181.6 0.433
2023 180.6 0.444
2024 179.6 0.455
2025 178.6 0.466
2026 177.7 0.476
2027 176.9 0.486
2028 176.0 0.496
2029 175.2 0.505
2030 174.5 0.514


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



 
 


wds19531-1436g.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic