19301-4904 HDS2772

 
 
19h 30m 08.30s -49 03' 57.4" P.A. 264.3 sep 0.04 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
2017
Obs
4
Pa first
163
Pa last
236
P.A. Now (θ)
264.3°
Sep first
0.5
Sep last
0.1
Sep. Now (ρ)
0.04"
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
 
 
Precise pa
235.5
Precise sep
0.054
Constellation
Telescopium
HIP
95891
HD
183074
Distance
69.69
Distance ly
227.33
last precise pa
235.5
last precise sep
0.054
 
 
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° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2017
label rho theta
2000 0.424 167.5
2001 0.415 168.2
2002 0.405 168.9
2003 0.394 169.7
2004 0.382 170.5
2005 0.368 171.4
2006 0.353 172.3
2007 0.337 173.4
2008 0.319 174.5
2009 0.300 175.8
2010 0.279 177.2
2011 0.256 179.0
2012 0.231 181.0
2013 0.203 183.7
2014 0.172 187.2
2015 0.139 192.3
2016 0.103 200.8
2017 0.067 218.7
2018 0.044 264.3
2019 0.059 317.5
2020 0.087 341.1
2021 0.105 354.3
2022 0.110 4.8
2023 0.108 15.1
2024 0.103 26.2
2025 0.099 38.3
2026 0.097 51.3
2027 0.098 64.4
2028 0.103 76.7
2029 0.110 87.6
2030 0.121 96.8

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

grafico orbita





wds19301-4904e.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
19301-4904 HDS2772 1991 1 163 0.5 10.10 13.00 G6V 193008.30-490357.4
19301-4904 HDS2772 2014 2 190 0.1 10.10 13.00 G6V 193008.30-490357.4
19301-4904 HDS2772 2015 3 198 0.1 10.10 13.00 G6V 193008.30-490357.4
19301-4904 HDS2772 2017 4 236 0.1 10.10 13.00 G6V O 193008.30-490357.4

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