15122-1948 H 6  44AB (Iot Lib)

 
 
15h 12m 13.31s -19 47' 29.9" P.A. 111.00 sep 57.8 mag 4.53,10.87 Sp A0pSi dist. 116.41 pc (379.73 l.y.)
 
 
Coord 2000
15122-1948
Discov num
H 6  44
Comp
AB
Coord arcsec 2000
15 12 13.31 -19 47 29.9
Date first
1781
Date last
2013
Obs
29
Pa first
113
Pa last
111
P.A. Now (θ)
111°
Sep first
65.2
Sep last
57.8
Sep. Now (ρ)
57.8"
Mag pri
4.53
Mag sec
10.87
delta mag (ΔM)
6.34
Spectral class
A0pSi (white)
Pri motion ra
-035
Sec motion ra
-043
Pri motion dec
-033
Sec motion dec
-051
Notes
N V (See Notes, Proper motion indicates physical)
rPM=0.295 (< 0.3, Physical double)
This double is physical.
 
 
15122-1948 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 159090 15 12 13 -19 47 30 B 2351 Aa,Ab 2019 73 126 0.1 5.10 5.50 0.40 Y
Show Iot Lib 159090 15 12 13 -19 47 30 H 6 44 AB 2013 29 111 57.8 4.53 10.87 6.34 <===
Show 159090 15 12 17 -19 47 50 BU 618 BC 2016 22 13 2.1 10.87 11.40 0.53
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
110.8
Precise sep
57.78
Name
Iot Lib
Constellation
Libra
SAO
159090
HIP
74392
Gaia DR2
6256039884362600064
HD
134759
HR
5652
GC
20433
BD
BD-19 4047
Bayer
Iota Librae
Bayer name
Iot Lib
Flamsteed
24 Librae
Flamsteed name
24 Lib
Distance
116.41
Distance ly
379.73
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15122-1948 H 6 44 AB 2002 25 109 57.3 4.53 10.87 N D 151213.31-194729.9
15122-1948 H 6 44 AB 2009 26 110 57.1 4.53 10.87 N D 151213.31-194729.9
15122-1948 H 6 44 AB 2013 29 111 57.8 4.53 10.87 A0pSi N D 151213.31-194729.9

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