15351-4110 HJ 4786AB (Gam Lup)

 
 
15H 35M 08.41S -41 10' 00.4" P.A. 276.3 SEP 0.82 MAG 2.95,4.45 SP B2IV DIST. 129.03 PC (420.9 L.Y.)
 
 
Coord 2000
15351-4110
Discov num
HJ 4786
Comp
AB
Coord arcsec 2000
15 35 08.41 -41 10 00.4
Date first
1835
Date last
2016
Obs
103
Pa first
94
Pa last
277
P.A. Now (θ)
276.3°
Sep first
0.8
Sep last
1.0
Sep. Now (ρ)
0.82"
Mag pri
2.95
Mag sec
4.45
delta mag (ΔM)
1.5
Spectral class
B2IV (blue-white)
Pri motion ra
-028
Sec motion ra
-028
Pri motion dec
-042
Sec motion dec
-042
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
15351-4110 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Gam Lup 225938 15351-4110 HJ 4786 AB 1835 2016 103 276 0.8 2.95 4.45 1.50 Y <===
Show 225938 15351-4110 RIZ 15 AC 1999 1999 1 210 39.1 2.77 17.00 14.23
Show 225938 15351-4110 RIZ 15 AD 1999 1999 1 292 53.4 2.77 16.40 13.63
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Gam Lup
Constellation
Lupus
SAO
225938
HIP
76297
Tycho2
7840-01432-1
HD
138690
HR
5776
GC
20926
CD
CD-40 9760
CP
CP-40 7042
Bayer
Gamma Lupi
Bayer name
Gam Lup
Distance
129.03
Distance ly
420.9
last precise pa
277.4
last precise sep
0.95
 
 
ORBITAL ELEMENTS
 
 
Period (P)190y Periastron (T)1885y Semi-major axis (a)0.655a
Eccentricity (e)0.51 Inclination (i)95° Longitude of periastron (ω)311.5°
Node (Ω)94.6° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation1988
label rho theta
2000 0.796 277.9
2001 0.800 277.9
2002 0.804 277.8
2003 0.807 277.7
2004 0.811 277.6
2005 0.814 277.5
2006 0.817 277.4
2007 0.819 277.3
2008 0.821 277.2
2009 0.823 277.1
2010 0.825 277.0
2011 0.826 276.9
2012 0.827 276.8
2013 0.827 276.8
2014 0.827 276.7
2015 0.827 276.6
2016 0.826 276.5
2017 0.826 276.4
2018 0.824 276.3
2019 0.823 276.2
2020 0.821 276.1
2021 0.818 276.0
2022 0.815 276.0
2023 0.812 275.9
2024 0.808 275.8
2025 0.804 275.7
2026 0.799 275.6
2027 0.794 275.5
2028 0.789 275.4
2029 0.783 275.3
2030 0.776 275.2

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