12307-5736 RST2801

 
 
12h 30m 39.03s -57 35' 46.3" P.A. 128 sep 2.1 mag 9.85,12.40 Sp B9IV/V
 
 
Coord 2000
12307-5736
Discov num
RST2801
Comp
Coord arcsec 2000
12 30 39.03 -57 35 46.3
Date first
1934
Date last
1947
Obs
2
Pa first
126
Pa last
128
P.A. Now (θ)
128°
Sep first
2.0
Sep last
2.1
Sep. Now (ρ)
2.1"
Mag pri
9.85
Mag sec
12.40
delta mag (ΔM)
2.55
Spectral class
B9IV/V (blue-white)
Pri motion ra
-012
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
128.1
Precise sep
2.08
Cdsa2 id
RST 2801
Constellation
Crux
SAO
240008
Tycho2
8654-03114-1
HD
108831
Ra deg
12.510841666666666
De deg
-57.59619444444445
last precise pa
128.1
last precise sep
2.08
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12307-5736 RST2801 1947 2 128 2.1 9.85 12.40 B9IV/V 123039.03-573546.3

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