19301-4904 HDS 2772

 
 
19h 30m 08.30s -49° 03' 57.4" P.A. 334.00 sep 0.1 mag 10.10,13.00 Sp G6V dist. 69.69 pc (227.33 l.y.)
 
 
Coord 2000 19301-4904 Discov num HDS2772 Comp Coord arcsec 2000 19 30 08.30 -49 03 57.4
Date first 1991 Date last 2020 Obs 7
Pa first 163 Pa last 333.8 P.A. Now (θ) 333.8°
Sep first 0.5 Sep last 0.088 Sep. Now (ρ) 0.088"
Mag pri 10.10 Mag sec 13.00 delta mag (ΔM) 2.9 Spectral class G6V (yellow)
Pri motion ra -026 Sec motion ra
Pri motion dec -026 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Telescopium HIP 95891 Tycho2 8397-00662-1 Gaia DR2 6659033504651375232
HD 183074 CD CD-4912692 CP CP-4910976 Distance 69.69
Distance ly 227.33
 
 
ORBITAL ELEMENTS
 
 
Period (P)80y Periastron (T)2019.69y Semi-major axis (a)0.312a
Eccentricity (e)0.7 Inclination (i)66.9° Longitude of periastron (ω)144.4°
Node (Ω)171.3° Notes ReferenceTok2017c
Equinox2000 Last observation2017 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 167.5 0.424
2001 168.2 0.415
2002 168.9 0.405
2003 169.7 0.394
2004 170.5 0.382
2005 171.4 0.368
2006 172.3 0.353
2007 173.4 0.337
2008 174.5 0.319
2009 175.8 0.300
2010 177.2 0.279
2011 179.0 0.256
2012 181.0 0.231
2013 183.7 0.203
2014 187.2 0.172
2015 192.3 0.139
2016 200.8 0.103
2017 218.7 0.067
2018 264.3 0.044
2019 317.5 0.059
2020 341.1 0.087
2021 354.3 0.105
2022 4.8 0.110
2023 15.1 0.108
2024 26.2 0.103
2025 38.3 0.099
2026 51.3 0.097
2027 64.4 0.098
2028 76.7 0.103
2029 87.6 0.110
2030 96.8 0.121


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



 
 


wds19301-4904e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic