17541-4821 B  1870

 
 
17h 54m 04.21s -48 20' 30.7" P.A. 207 sep 0.1 mag 9.20,9.40 Sp F2V dist. 257.07 pc (838.56 l.y.)
 
 
Coord 2000
17541-4821
Discov num
B  1870
Comp
Coord arcsec 2000
17 54 04.21 -48 20 30.7
Date first
1930
Date last
2017
Obs
9
Pa first
144
Pa last
207
P.A. Now (θ)
207°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
9.20
Mag sec
9.40
delta mag (ΔM)
0.2
Spectral class
F2V (yellow-white)
Pri motion ra
+001
Sec motion ra
Pri motion dec
-060
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
207.3
Precise sep
0.088
Constellation
Ara
SAO
228523
HIP
87635
Tycho2
8348-00735-1
HD
162551
CD
CD-4812133
CP
CP-48 9568
Distance
257.07
Distance ly
838.56
last precise pa
207.3
last precise sep
0.088
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17541-4821 B 1870 1989 5 57 0.1 9.20 9.40 F2V 175404.21-482030.7
17541-4821 B 1870 2009 7 72 0.1 9.20 9.40 F2V 175404.21-482030.7
17541-4821 B 1870 2015 8 218 0.1 9.20 9.40 F2V 175404.21-482030.7
17541-4821 B 1870 2017 9 207 0.1 9.20 9.40 F2V 175404.21-482030.7

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