20256-5644 HJ 5193AB (Peacock)

 
 
20h 25m 38.85s -56 44' 06.3" P.A. 80 sep 249.4 mag 1.90,9.14 Sp B2IV dist. 54.82 pc (178.82 l.y.)
 
 
Coord 2000
20256-5644
Discov num
HJ 5193
Comp
AB
Coord arcsec 2000
20 25 38.85 -56 44 06.3
Date first
1879
Date last
2008
Obs
7
Pa first
85
Pa last
80
P.A. Now (θ)
80°
Sep first
245.4
Sep last
249.4
Sep. Now (ρ)
249.4"
Mag pri
1.90
Mag sec
9.14
delta mag (ΔM)
7.24
Spectral class
B2IV (blue-white)
Pri motion ra
+007
Sec motion ra
+007
Pri motion dec
-086
Sec motion dec
-021
Notes
N (See Notes)
rPM=0.753
Nature of this double is uncertain.
 
 
20256-5644 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Peacock 246574 20256-5644 HJ 5193 AB 1879 2008 7 80 249.4 1.90 9.14 7.24 <===
Show 20256-5644 HJ 5193 AC 1879 2010 3 77 244.4 1.90 9.70 7.80
Show 20256-5644 HJ 5193 AD 1904 2010 3 254 62.3 1.90 9.70 7.80
Show 20256-5644 HJ 5193 BC 1835 2010 10 332 16.7 9.14 9.70 0.56
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
80.2
Precise sep
249.4
Common name
Peacock
Meaning
peacock
Constellation
Pavo
SAO
246574
HIP
100751
Tycho2
8785-01898-1
Gaia DR2
87465816064
HD
193924
HR
7790
GC
28374
CP
CP-57 9674
Bayer
Alpha Pavonis
Bayer name
Alp Pav
Distance
54.82
Distance ly
178.82
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20256-5644 HJ 5193 AB 1999 5 80 249.0 1.90 9.14 B2IV N D 202538.85-564406.3
20256-5644 HJ 5193 AB 2008 6 80 249.4 1.90 9.14 B2IV N D 202538.85-564406.3

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