15234-5919 HJ 4757 (Gam Cir)

 
 
15h 23m 22.66s -59 19' 14.5" P.A. 354.1 sep 0.83 mag 4.94,5.73 Sp B5IV+F8 dist. 137.55 pc (448.69 l.y.)
 
 
Coord 2000
15234-5919
Discov num
HJ 4757
Comp
Coord arcsec 2000
15 23 22.66 -59 19 14.5
Date first
1835
Date last
2017
Obs
72
Pa first
107
Pa last
357
P.A. Now (θ)
354.1°
Sep first
1.0
Sep last
0.8
Sep. Now (ρ)
0.83"
Mag pri
4.94
Mag sec
5.73
delta mag (ΔM)
0.79
Spectral class
B5IV+F8 (blue-white/yellow-white)
Pri motion ra
-010
Sec motion ra
Pri motion dec
-037
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
356.6
Precise sep
0.819
Name
Gam Cir
Cdsa2 id
HJ 4757
Constellation
Circinus
SAO
242463
HIP
75323
Tycho2
8707-01990-1
HD
136415
HR
5704
GC
20663
CP
CP-58 5908
Bayer
Gamma Circini
Bayer name
Gam Cir
Ra deg
15.389627777777777
De deg
-59.32069444444445
Distance
137.55
Distance ly
448.69
last precise pa
356.6
last precise sep
0.819
 
 
ORBITAL ELEMENTS
 
 
Period (P)258y Periastron (T)2075y Semi-major axis (a)2.576a
Eccentricity (e)0.931 Inclination (i)100.4° Longitude of periastron (ω)264.9°
Node (Ω)116° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.823 10.3
2001 0.823 9.4
2002 0.822 8.5
2003 0.822 7.6
2004 0.821 6.7
2005 0.821 5.8
2006 0.821 4.9
2007 0.821 4.0
2008 0.821 3.1
2009 0.821 2.2
2010 0.822 1.3
2011 0.822 0.4
2012 0.822 359.5
2013 0.823 358.6
2014 0.824 357.7
2015 0.824 356.8
2016 0.825 355.9
2017 0.826 355.0
2018 0.827 354.1
2019 0.828 353.2
2020 0.829 352.3
2021 0.830 351.4
2022 0.831 350.5
2023 0.832 349.6
2024 0.833 348.8
2025 0.834 347.9
2026 0.836 347.0
2027 0.837 346.1
2028 0.838 345.3
2029 0.839 344.4
2030 0.841 343.5

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

grafico orbita





wds15234-5919a.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
15234-5919 HJ 4757 2006 57 5 0.8 4.94 5.73 B5IV+F8 NOD 152322.66-591914.5
15234-5919 HJ 4757 2009 62 3 0.8 4.94 5.73 B5IV+F8 NOD 152322.66-591914.5
15234-5919 HJ 4757 2012 63 1 0.8 4.94 5.73 B5IV F8 NOD 152322.66-591914.5
15234-5919 HJ 4757 2014 64 359 0.8 4.94 5.73 B5IV F8 NO 152322.66-591914.5
15234-5919 HJ 4757 2016 68 0 1.0 4.94 5.73 B5IV+F8 NO 152322.66-591914.5
15234-5919 HJ 4757 2017 72 357 0.8 4.94 5.73 B5IV+F8 NO 152322.66-591914.5

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