18009-1858 HJ 2815

 
 
18h 00m 51.52s -18 58' 04.1" P.A. 103 sep 15.9 mag 9.16,12.20 Sp ApSi
 
 
Coord 2000
18009-1858
Discov num
HJ 2815
Comp
Coord arcsec 2000
18 00 51.52 -18 58 04.1
Date first
1830
Date last
2010
Obs
5
Pa first
113
Pa last
103
P.A. Now (θ)
103°
Sep first
12.0
Sep last
15.9
Sep. Now (ρ)
15.9"
Mag pri
9.16
Mag sec
12.20
delta mag (ΔM)
3.04
Spectral class
ApSi (white)
Pri motion ra
+002
Sec motion ra
-012
Pri motion dec
-006
Sec motion dec
-025
Notes
rPM=0.851
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
103
Precise sep
15.85
Constellation
Sagittarius
Tycho2
6259-00107-1
HD
164190
last precise pa
103.5
last precise sep
14.4
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18009-1858 HJ 2815 1998 3 103 15.3 9.16 12.20 ApSi D 180051.52-185804.1
18009-1858 HJ 2815 1999 4 103 15.4 9.16 12.20 ApSi D 180051.52-185804.1
18009-1858 HJ 2815 2010 5 103 14.7 9.16 12.20 ApSi 180051.52-185804.1

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