15493-0458 A    20AB

 
 
15h 49m 17.84s -04 57' 41.3" P.A. 239 sep 0.8 mag 8.48,10.76 Sp B9 dist. 917.43 pc (2992.66 l.y.)
 
 
Coord 2000
15493-0458
Discov num
A    20
Comp
AB
Coord arcsec 2000
15 49 17.84 -04 57 41.3
Date first
1899
Date last
1991
Obs
9
Pa first
233
Pa last
239
P.A. Now (θ)
239°
Sep first
0.8
Sep last
0.8
Sep. Now (ρ)
0.8"
Mag pri
8.48
Mag sec
10.76
delta mag (ΔM)
2.28
Spectral class
B9 (blue-white)
Pri motion ra
-002
Sec motion ra
-004
Pri motion dec
-006
Sec motion dec
-006
Notes
rPM=0.277 (< 0.3, Physical double)
This double is physical.
 
 
15493-0458 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 15493-0458 A 20 AB 1899 1991 9 239 0.8 8.48 10.76 2.28 <===
Show 15493-0458 A 20 AC 1899 2000 6 24 7.9 8.48 14.00 5.52
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
238.6
Precise sep
0.82
Constellation
Libra
HIP
77486
Tycho2
5026-00260-1
HD
141461
BD
BD-04 3982
Distance
917.43
Distance ly
2992.66
last precise pa
238.6
last precise sep
0.82
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15493-0458 A 20 AB 1991 9 239 0.8 8.48 10.76 B9 D 154917.84-045741.3

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