21094-7310 I 379 AB

 
 
21h 09m 22.44s -73 10' 22.6" P.A. 22.00 sep 0.1 mag 5.80,8.60 Sp F9.5V dist. 19.77 pc (64.49 l.y.)
 
 
Coord 2000 21094-7310 Discov num I   379 Comp AB Coord arcsec 2000 21 09 22.44 -73 10 22.6
Date first 1898 Date last 2022 Obs 16
Pa first 350 Pa last 21.5 P.A. Now (θ) 12.3°
Sep first 0.9 Sep last 0.068 Sep. Now (ρ) 0.05"
Mag pri 5.80 Mag sec 8.60 delta mag (ΔM) 2.8 Spectral class F9.5V (yellow-white)
Pri motion ra +460 Sec motion ra
Pri motion dec -286 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
21094-7310 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 257890 21 09 22 -73 10 23 I 379 AB 2022 16 22 0.1 5.80 8.60 2.80 Y <===
Show 257890 21 09 22 -73 10 23 HDO 305 AB,C 2015 7 118 6.4 5.70 13.50 7.80
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pavo SAO 257890 HIP 104440 Tycho2 9333-01274-1
HD 200525 HR 8061 GC 29489 GL Gl 818.1A
CD CD-73 1547 CP CP-73 2192 Distance 19.77 Distance ly 64.49
 
 
ORBITAL ELEMENTS
 
 
Period (P)5.389y± 0.05 Periastron (T)2017.55y± 0.04 Semi-major axis (a)0.1829a± 0.004
Eccentricity (e)0.69± 0.022 Inclination (i)93.3°± 1.5 Longitude of periastron (ω)183.4°± 3.9
Node (Ω)194.4°± 0.5 Notesn ReferenceTok2020e
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 192.6 0.224
2001 180.6 0.028
2002 198.4 0.103
2003 195.4 0.262
2004 194.3 0.309
2005 193.2 0.266
2006 190.6 0.122
2007 333.7 0.008
2008 196.0 0.216
2009 194.7 0.302
2010 193.7 0.293
2011 192.1 0.192
2012 20.8 0.034
2013 197.1 0.151
2014 195.1 0.281
2015 194.1 0.307
2016 192.9 0.244
2017 188.3 0.071
2018 200.9 0.060
2019 195.6 0.245
2020 194.4 0.307
2021 193.4 0.279
2022 191.4 0.155
2023 12.3 0.050
2024 196.4 0.191
2025 194.8 0.294
2026 193.8 0.301
2027 192.5 0.217
2028 166.8 0.013
2029 198.0 0.116
2030 195.3 0.267


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



 
 


wds21094-7310a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic