21307-3057 RSS 561AB

 
 
21h 30m 44.67s -30 57' 20.8" P.A. 98.00 sep 5.3 mag 10.87,10.90 dist. 52.6 pc (171.58 l.y.)
 
 
Coord 2000
21307-3057
Discov num
RSS 561
Comp
AB
Coord arcsec 2000
21 30 44.67 -30 57 20.8
Date first
1976
Date last
2015
Obs
4
Pa first
98
Pa last
98
P.A. Now (θ)
98°
Sep first
5.7
Sep last
5.3
Sep. Now (ρ)
5.3"
Mag pri
10.87
Mag sec
10.90
delta mag (ΔM)
0.03
Spectral class
Pri motion ra
+016
Sec motion ra
Pri motion dec
-215
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21307-3057 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 30 45 -30 57 21 RSS 561 AB 2015 4 98 5.3 10.87 10.90 0.03 <===
Show 21 30 45 -30 57 21 TOK 636 AC 1999 2 125 930.0 10.87 17.78 6.91
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
97.7
Precise sep
5.253
Constellation
Piscis Austrinus
HIP
106208
Tycho2
7474-00868-1
CD
CD-3118312
Distance
52.6
Distance ly
171.58
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21307-3057 RSS 561 AB 1999 3 98 5.2 10.87 10.90 213044.67-305720.8
21307-3057 RSS 561 AB 2010 4 99 4.9 10.87 10.90 213044.67-305720.8
21307-3057 RSS 561 AB 2015 4 98 5.3 10.87 10.90 213044.67-305720.8

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