15197-2416 HJ 4756

 
 
15h 19m 40.37s -24 16' 11.9" P.A. 233.00 sep 0.6 mag 7.90,8.27 Sp F4V dist. 69.64 pc (227.17 l.y.)
 
 
Coord 2000
15197-2416
Discov num
HJ 4756
Comp
Coord arcsec 2000
15 19 40.37 -24 16 11.9
Date first
1835
Date last
2016
Obs
39
Pa first
0
Pa last
247
P.A. Now (θ)
233°
Sep first
0.7
Sep last
0.6
Sep. Now (ρ)
0.64"
Mag pri
7.90
Mag sec
8.27
delta mag (ΔM)
0.37
Spectral class
F4V (yellow-white)
Pri motion ra
-046
Sec motion ra
-046
Pri motion dec
-023
Sec motion dec
-023
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
246.7
Precise sep
0.58
Constellation
Libra
SAO
183377
HIP
75012
Tycho2
6762-01032-1
Gaia DR2
6227062221054093824
HD
136121
ADS
9586
CD
CD-2312208
CP
CP-23 6146
Distance
69.64
Distance ly
227.17
last precise pa
246.7
last precise sep
0.58
 
 
ORBITAL ELEMENTS
 
 
Period (P)541.6y Periastron (T)1825.04y Semi-major axis (a)1.196a
Eccentricity (e)0.221 Inclination (i)117.1° Longitude of periastron (ω)127.2°
Node (Ω)150.9° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1992
label rho theta
2000 0.632 255.3
2001 0.631 254.3
2002 0.630 253.2
2003 0.629 252.1
2004 0.628 251.1
2005 0.627 250.0
2006 0.627 248.9
2007 0.627 247.8
2008 0.627 246.8
2009 0.627 245.7
2010 0.627 244.6
2011 0.627 243.5
2012 0.628 242.5
2013 0.629 241.4
2014 0.629 240.3
2015 0.630 239.3
2016 0.632 238.2
2017 0.633 237.1
2018 0.635 236.1
2019 0.636 235.0
2020 0.638 234.0
2021 0.640 233.0
2022 0.642 231.9
2023 0.644 230.9
2024 0.647 229.9
2025 0.649 228.9
2026 0.652 227.9
2027 0.655 226.9
2028 0.658 225.9
2029 0.661 225.0
2030 0.665 224.0


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



 
 


wds15197-2416a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15197-2416 HJ 4756 1992 35 263 0.6 7.90 8.27 F4V OD 151940.37-241611.9
15197-2416 HJ 4756 2008 36 247 0.6 7.90 8.27 F4V OD 151940.37-241611.9
15197-2416 HJ 4756 2013 37 237 0.6 7.90 8.27 F4V O 151940.37-241611.9
15197-2416 HJ 4756 2016 38 247 0.6 7.90 8.27 F4V O 151940.37-241611.9

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