18025+4414 OLE 4 Aa,Ab

 
 
18h 02m 30.89s +44° 14' 02.6" P.A. 319.00 sep 0.1 mag 7.31, Sp F5V dist. 81.3 pc (265.2 l.y.)
 
 
Coord 2000 18025+4414 Discov num OLE   4 Comp Aa,Ab Coord arcsec 2000 18 02 30.89 +44 14 02.6
Date first 1975 Date last 2018 Obs 4
Pa first 46 Pa last 319 P.A. Now (θ) 319°
Sep first 0.2 Sep last 0.075 Sep. Now (ρ) 0.075"
Mag pri 7.31 Mag sec delta mag (ΔM) Spectral class F5V (yellow-white)
Pri motion ra -040 Sec motion ra
Pri motion dec -067 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
18025+4414 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 47163 18 02 31 +44 14 03 OLE 4 Aa,Ab 2018 4 319 0.1 7.31 Y <===
Show HD 165170 47163 18 02 31 +44 14 03 BU 1127 AB 2018 95 39 0.7 7.31 9.20 1.89
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules SAO 47163 HIP 88350 Tycho2 3114-01159-1
Gaia DR2 2114382335056498432 HD 165170 ADS 11010 BD BD+44 2812
Distance 81.3 Distance ly 265.2
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier18025+4414 BU 1127 Aa,B
coord_arcsec_2000180230.89+441402.6
Period (P)281.47y Periastron (T)2070.25y Semi-major axis (a)0.75a
Eccentricity (e)0.298 Inclination (i)146.4° Longitude of periastron (ω)135.3°
Node (Ω)73.2° Notesn ReferenceCve2016c
Equinox2000 Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 62.3 0.806
2001 61.4 0.801
2002 60.5 0.795
2003 59.6 0.789
2004 58.6 0.784
2005 57.7 0.778
2006 56.7 0.772
2007 55.8 0.765
2008 54.8 0.759
2009 53.8 0.753
2010 52.8 0.746
2011 51.7 0.739
2012 50.7 0.733
2013 49.6 0.726
2014 48.5 0.719
2015 47.4 0.712
2016 46.2 0.705
2017 45.1 0.698
2018 43.9 0.690
2019 42.7 0.683
2020 41.4 0.675
2021 40.2 0.668
2022 38.9 0.660
2023 37.5 0.653
2024 36.2 0.645
2025 34.8 0.637
2026 33.4 0.630
2027 31.9 0.622
2028 30.4 0.614
2029 28.9 0.607
2030 27.3 0.599


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



 
 


wds18025%2B4414c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic