18181-0120 HDS2587

 
 
18h 18m 05.51s -01 19' 48.5" P.A. 161 sep 0.1 mag 7.78,9.34 Sp A0 dist. 227.79 pc (743.05 l.y.)
 
 
Coord 2000
18181-0120
Discov num
HDS2587
Comp
Coord arcsec 2000
18 18 05.51 -01 19 48.5
Date first
1991
Date last
2015
Obs
3
Pa first
350
Pa last
161
P.A. Now (θ)
161°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
7.78
Mag sec
9.34
delta mag (ΔM)
1.56
Spectral class
A0 (white)
Pri motion ra
+002
Sec motion ra
Pri motion dec
+002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
160.7
Precise sep
0.079
Constellation
Serpens
HIP
89680
Tycho2
5098-00553-1
HD
168073
BD
BD-01 3469
Distance
227.79
Distance ly
743.05
last precise pa
160.7
last precise sep
0.079
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18181-0120 HDS2587 1991 1 350 0.1 7.78 9.34 A0 181805.51-011948.5
18181-0120 HDS2587 2014 2 329 0.1 7.78 9.34 A0 181805.51-011948.5
18181-0120 HDS2587 2015 3 161 0.1 7.78 9.34 A0 181805.51-011948.5

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