21330+2408 HDS 3065 Aa,Ab

 
 
21h 32m 57.46s +24° 07' 38.6" P.A. 86.00 sep 0.2 mag 8.78,11.21 Sp K0 dist. 36.26 pc (118.28 l.y.)
 
 
Coord 2000 21330+2408 Discov num HDS3065 Comp Aa,Ab Coord arcsec 2000 21 32 57.46 +24 07 38.6
Date first 1991 Date last 2022 Obs 20
Pa first 249 Pa last 85.9 P.A. Now (θ) 94.6°
Sep first 0.6 Sep last 0.199 Sep. Now (ρ) 0.161"
Mag pri 8.78 Mag sec 11.21 delta mag (ΔM) 2.43 Spectral class K0 (yellow-orange)
Pri motion ra +344 Sec motion ra +335
Pri motion dec +051 Sec motion dec +051
Notes N O (See Notes, Orbital solution)
rPM=0.026 (< 0.3, Physical double)
This double is physical.
 
 
21330+2408 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 32 57 +24 07 39 HDS 3065 Aa,Ab 2022 20 86 0.2 8.78 11.21 2.43 Y <===
Show 21 32 57 +24 07 39 OSO 149 AB 2015 7 285 24.6 8.78 15.30 6.52
Show 21 32 57 +24 07 39 OSO 149 AC 2015 7 66 12.0 8.78 11.80 3.02
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pegasus SAO 89793 HIP 106394 Tycho2 2188-00348-1
HD 205142 BD BD+23 4334 Distance 36.26 Distance ly 118.28
 
 
ORBITAL ELEMENTS
 
 
Period (P)67.3y Periastron (T)2025y Semi-major axis (a)0.466a
Eccentricity (e)0.63 Inclination (i)101.3° Longitude of periastron (ω)30.7°
Node (Ω)75.8° Notesn ReferenceTok2019c
Equinox Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 244.8 0.524
2001 244.2 0.503
2002 243.4 0.480
2003 242.6 0.457
2004 241.7 0.432
2005 240.7 0.407
2006 239.6 0.380
2007 238.3 0.352
2008 236.7 0.323
2009 234.8 0.294
2010 232.6 0.263
2011 229.7 0.232
2012 225.9 0.201
2013 220.7 0.169
2014 213.1 0.139
2015 201.5 0.111
2016 183.4 0.089
2017 158.0 0.080
2018 132.0 0.087
2019 112.8 0.107
2020 100.4 0.133
2021 92.0 0.158
2022 85.7 0.179
2023 80.6 0.189
2024 75.5 0.181
2025 69.2 0.149
2026 57.0 0.096
2027 11.8 0.044
2028 295.6 0.070
2029 276.6 0.133
2030 269.8 0.195
2031 266.2 0.253
2032 263.9 0.305
2033 262.3 0.353
2034 261.0 0.396
2035 260.0 0.435
2036 259.1 0.471
2037 258.4 0.503
2038 257.7 0.532
2039 257.1 0.558
2040 256.6 0.581
2041 256.1 0.602
2042 255.6 0.620
2043 255.2 0.636
2044 254.7 0.650
2045 254.3 0.662
2046 253.9 0.672
2047 253.6 0.680
2048 253.2 0.686
2049 252.8 0.691
2050 252.4 0.694


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds21330%2B2408a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic