12540-1802 S   643

 
 
12h 54m 00.29s -18 02' 15.4" P.A. 295 sep 23.3 mag 7.07,8.17 Sp A5III+A0 dist. 227.79 pc (743.05 l.y.)
 
 
Coord 2000
12540-1802
Discov num
S   643
Comp
Coord arcsec 2000
12 54 00.29 -18 02 15.4
Date first
1825
Date last
2013
Obs
20
Pa first
294
Pa last
295
P.A. Now (θ)
295°
Sep first
23.4
Sep last
23.3
Sep. Now (ρ)
23.3"
Mag pri
7.07
Mag sec
8.17
delta mag (ΔM)
1.1
Spectral class
A5III+A0 (white/white)
Pri motion ra
-036
Sec motion ra
-101
Pri motion dec
+003
Sec motion dec
+097
Notes
N Y (See Notes, Parallax indicates components are non-physical)
rPM=0.816
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
294.6
Precise sep
23.29
Constellation
Corvus
SAO
157580
HIP
62954
Tycho2
6114-01409-1
HD
112074
BD
BD-17 3726
Distance
227.79
Distance ly
743.05
last precise pa
294.6
last precise sep
23.29
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12540-1802 S 643 2002 16 295 23.7 7.07 8.17 A5III A0 NYD 125400.29-180215.4
12540-1802 S 643 2012 18 295 23.7 7.07 8.17 A5III A0 NYD 125400.29-180215.4
12540-1802 S 643 2013 19 295 23.3 7.07 8.17 A5III A0 NYD 125400.29-180215.4

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