23347+3748 YSC 139 (HD 221757)

 
 
23h 34m 41.14s +37° 47' 58.8" P.A. 93.00 sep 0.0 mag 7.90,8.20 Sp F8 dist. 53.05 pc (173.05 l.y.)
 
 
Coord 2000 23347+3748 Discov num YSC 139 Comp Coord arcsec 2000 23 34 41.14 +37 47 58.8
Date first 2008 Date last 2015 Obs 14
Pa first 264 Pa last 92.8 P.A. Now (θ) 263°
Sep first 0.0 Sep last 0.03 Sep. Now (ρ) 0.032"
Mag pri 7.90 Mag sec 8.20 delta mag (ΔM) 0.3 Spectral class F8 (yellow-white)
Pri motion ra +115 Sec motion ra
Pri motion dec +094 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 221757 Constellation Andromeda SAO 73347 HIP 116360
Tycho2 3231-01052-1 Gaia DR2 1918953867019478144 HD 221757 BD BD+36 5082
Distance 53.05 Distance ly 173.05
 
 
ORBITAL ELEMENTS
 
 
Period (P)3.64y± 0.05 Periastron (T)2013.41y± 0.05 Semi-major axis (a)69m± 6
Eccentricity (e)0.69± 0.08 Inclination (i)87.9°± 0.8 Longitude of periastron (ω)274°± 2
Node (Ω)90°± 2 Notesn ReferenceHor2015b
Equinox2000 Last observation2014 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 98.4 0.026
2001 260.5 0.025
2002 268.4 0.053
2003 92.3 0.047
2004 118.4 0.009
2005 265.0 0.040
2006 270.7 0.029
2007 94.8 0.037
2008 248.3 0.011
2009 267.1 0.051
2010 90.6 0.040
2011 100.1 0.022
2012 262.0 0.028
2013 268.7 0.051
2014 92.8 0.045
2015 139.2 0.006
2016 265.5 0.043
2017 273.4 0.012
2018 95.6 0.034
2019 254.0 0.015
2020 267.5 0.053
2021 91.1 0.044
2022 102.6 0.018
2023 263.0 0.032
2024 269.1 0.048
2025 93.3 0.044
2026 186.2 0.004
2027 266.0 0.046
2028 85.7 0.010
2029 96.5 0.031
2030 257.4 0.019


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



 
 


wds23347%2B3748a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic