18025+4414 OLE   4Aa,Ab

 
 
18H 02M 30.89S +44 14' 02.6" P.A. 43.9 SEP 0.69 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
2007
Obs
2
Pa first
46
Pa last
59
P.A. Now (θ)
43.9°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.69"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 47163 18025+4414 OLE 4 Aa,Ab 1975 2007 2 44 0.7 7.31 Y <===
Show 47163 18025+4414 BU 1127 AB 1889 2016 90 42 0.8 7.31 9.20 1.89
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
SAO
47163
HIP
88350
Tycho2
3114-01159-1
HD
165170
ADS
11010
BD
BD+44 2812
Distance
81.3
Distance ly
265.2
last precise pa
59
last precise sep
0.06
 
 
ORBITAL ELEMENTS
 
 
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° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2015
label rho theta
2000 0.806 62.3
2001 0.801 61.4
2002 0.795 60.5
2003 0.789 59.6
2004 0.784 58.6
2005 0.778 57.7
2006 0.772 56.7
2007 0.765 55.8
2008 0.759 54.8
2009 0.753 53.8
2010 0.746 52.8
2011 0.739 51.7
2012 0.733 50.7
2013 0.726 49.6
2014 0.719 48.5
2015 0.712 47.4
2016 0.705 46.2
2017 0.698 45.1
2018 0.690 43.9
2019 0.683 42.7
2020 0.675 41.4
2021 0.668 40.2
2022 0.660 38.9
2023 0.653 37.5
2024 0.645 36.2
2025 0.637 34.8
2026 0.630 33.4
2027 0.622 31.9
2028 0.614 30.4
2029 0.607 28.9
2030 0.599 27.3

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic