19534+2020 HDS 2833 Ba,Bb

 
 
19h 53m 24.27s +20° 19' 38.7" P.A. 265.00 sep 0.2 mag 7.63,9.39 Sp A0 dist. 164.2 pc (535.62 l.y.)
 
 
Coord 2000 19534+2020 Discov num HDS2833 Comp Ba,Bb Coord arcsec 2000 19 53 24.27 +20 19 38.7
Date first 1991 Date last 2021 Obs 5
Pa first 28 Pa last 264.5 P.A. Now (θ) 264.5°
Sep first 0.2 Sep last 0.179 Sep. Now (ρ) 0.179"
Mag pri 7.63 Mag sec 9.39 delta mag (ΔM) 1.76 Spectral class A0 (white)
Pri motion ra +030 Sec motion ra
Pri motion dec +016 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
19534+2020 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 188211 87874 19 53 23 +20 20 14 STFA 48 AB 2019 67 147 41.7 7.14 7.34 0.20
Show 87874 19 53 23 +20 20 14 GUI 28 AC 2015 15 218 222.3 7.14 10.48 3.34
Show 87876 19 53 24 +20 19 39 HDS 2833 Ba,Bb 2021 5 265 0.2 7.63 9.39 1.76 Y <===
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Vulpecula SAO 87876 HIP 97879 Tycho2 1624-00307-1
Gaia DR2 1826324586571571712 HD 188212 GC 27540 BD BD+19 4196
Distance 164.2 Distance ly 535.62
 
 
ORBITAL ELEMENTS
 
 
Period (P)85y Periastron (T)2036.5y Semi-major axis (a)0.224a
Eccentricity (e)0.083 Inclination (i)141.6° Longitude of periastron (ω)190.6°
Node (Ω)27.9° Notesn ReferenceTok2021f
Equinox2000 Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 1.6 0.227
2001 358.3 0.224
2002 354.9 0.220
2003 351.5 0.216
2004 347.8 0.212
2005 344.1 0.208
2006 340.2 0.204
2007 336.1 0.200
2008 331.9 0.196
2009 327.5 0.192
2010 322.9 0.189
2011 318.2 0.185
2012 313.3 0.183
2013 308.2 0.180
2014 303.0 0.178
2015 297.8 0.177
2016 292.5 0.176
2017 287.1 0.176
2018 281.8 0.176
2019 276.5 0.177
2020 271.2 0.179
2021 266.1 0.181
2022 261.0 0.183
2023 256.1 0.185
2024 251.4 0.188
2025 246.7 0.190
2026 242.2 0.193
2027 237.8 0.196
2028 233.5 0.198
2029 229.4 0.200
2030 225.3 0.202


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



 
 


wds19534%2B2020a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic