19043-2132 H N 126 (HD 177166)

 
 
19h 04m 20.28s -21° 31' 53.7" P.A. 183.00 sep 1.3 mag 7.87,8.06 Sp F8V dist. 56.37 pc (183.88 l.y.)
 
 
Coord 2000 19043-2132 Discov num H N 126 Comp Coord arcsec 2000 19 04 20.28 -21 31 53.7
Date first 1873 Date last 2019 Obs 115
Pa first 40 Pa last 182.5 P.A. Now (θ) 182.5°
Sep first 1.0 Sep last 1.29 Sep. Now (ρ) 1.29"
Mag pri 7.87 Mag sec 8.06 delta mag (ΔM) 0.19 Spectral class F8V (yellow-white)
Pri motion ra +069 Sec motion ra +069
Pri motion dec -041 Sec motion dec -041
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 177166 Constellation Sagittarius SAO 187634 HIP 93661
Tycho2 6295-01800-1 Gaia DR2 4081665892816012288 HD 177166 GC 26214
ADS 11989 BD BD-21 5233 Distance 56.37 Distance ly 183.88
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier19043-2132
coord_arcsec_2000190420.28-213153.7
Period (P)502.4462y± 153.062 Periastron (T)1899.245y± 4.961 Semi-major axis (a)1.5812a± 0.37083
Eccentricity (e)0.58771± 0.05546 Inclination (i)128.551°± 4.939 Longitude of periastron (ω)112.445°± 11.706
Node (Ω)72.483°± 4.166 Notes ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 193.4 1.237
2001 192.8 1.239
2002 192.2 1.242
2003 191.6 1.245
2004 191.0 1.247
2005 190.4 1.250
2006 189.9 1.252
2007 189.3 1.255
2008 188.7 1.258
2009 188.1 1.260
2010 187.6 1.263
2011 187.0 1.265
2012 186.5 1.268
2013 185.9 1.271
2014 185.3 1.274
2015 184.8 1.276
2016 184.2 1.279
2017 183.7 1.282
2018 183.1 1.284
2019 182.6 1.287
2020 182.0 1.290
2021 181.5 1.293
2022 181.0 1.296
2023 180.4 1.298
2024 179.9 1.301
2025 179.4 1.304
2026 178.8 1.307
2027 178.3 1.310
2028 177.8 1.313
2029 177.2 1.316
2030 176.7 1.319


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



 
 


wds19043-2132b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic