22514+6142 STF 2950 AB (HD 216380)

 
 
22h 51m 22.51s +61° 41' 47.9" P.A. 272.00 sep 1.1 mag 6.03,7.08 Sp G8III-IV dist. 72.73 pc (237.25 l.y.)
 
 
Coord 2000 22514+6142 Discov num STF2950 Comp AB Coord arcsec 2000 22 51 22.51 +61 41 47.9
Date first 1828 Date last 2021 Obs 203
Pa first 329 Pa last 272.4 P.A. Now (θ) 272.4°
Sep first 3.0 Sep last 1.14 Sep. Now (ρ) 1.14"
Mag pri 6.03 Mag sec 7.08 delta mag (ΔM) 1.05 Spectral class G8III-IV (yellow)
Pri motion ra +101 Sec motion ra +101
Pri motion dec +041 Sec motion dec +041
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
22514+6142 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 216380 20281 22 51 23 +61 41 48 STF 2950 AB 2021 203 272 1.1 6.03 7.08 1.05 Y <===
Show 20281 22 51 23 +61 41 48 STF 2950 AC 2017 15 354 39.2 6.03 11.05 5.02
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 216380 Constellation Cepheus SAO 20281 HIP 112864
Tycho2 4265-00942-1 Gaia DR2 2206895483941922304 HD 216380 HR 8696
GC 31884 ADS 16317 BD BD+60 2450 Distance 72.73
Distance ly 237.25
 
 
ORBITAL ELEMENTS
 
 
Period (P)817.1898y± 340.49 Periastron (T)2046.1998y± 7.7609 Semi-major axis (a)2.5818a± 0.91014
Eccentricity (e)0.82968± 0.0918 Inclination (i)119.004°± 7.364 Longitude of periastron (ω)271.676°± 9.256
Node (Ω)83.838°± 12.671 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 282.6 1.379
2001 282.1 1.366
2002 281.7 1.352
2003 281.3 1.339
2004 280.8 1.325
2005 280.4 1.310
2006 279.9 1.296
2007 279.4 1.281
2008 278.9 1.265
2009 278.4 1.249
2010 277.9 1.233
2011 277.4 1.217
2012 276.8 1.200
2013 276.3 1.182
2014 275.7 1.164
2015 275.1 1.146
2016 274.5 1.127
2017 273.9 1.107
2018 273.2 1.087
2019 272.5 1.066
2020 271.8 1.045
2021 271.1 1.023
2022 270.3 1.000
2023 269.5 0.977
2024 268.6 0.952
2025 267.7 0.927
2026 266.8 0.901
2027 265.7 0.874
2028 264.7 0.846
2029 263.5 0.817
2030 262.3 0.786


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



 
 


wds22514%2B6142b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic