18169-1734 SKF  98

 
 
18h 16m 51.20s -17 33' 32.1" P.A. 242 sep 3.9 mag 7.48,7.17 Sp A2
 
 
Coord 2000
18169-1734
Discov num
SKF  98
Comp
Coord arcsec 2000
18 16 51.20 -17 33 32.1
Date first
1999
Date last
2004
Obs
2
Pa first
242
Pa last
242
P.A. Now (θ)
242°
Sep first
3.7
Sep last
3.9
Sep. Now (ρ)
3.9"
Mag pri
7.48
Mag sec
7.17
delta mag (ΔM)
0.31
Spectral class
A2 (white)
Pri motion ra
+012
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
K (K-band or other infrared magnitudes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
241.5
Precise sep
3.85
Constellation
Sagittarius
Tycho2
6269-00304-1
HD
313010
last precise pa
241.5
last precise sep
3.85
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18169-1734 SKF 98 2000 1 235 4.1 10.80   181651.20-173332.1
18169-1734 SKF 98 2004 3 242 3.9 10.80   D 181651.20-173332.1

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