17421+2127 DRD   1

 
 
17h 42m 00.55s +21 27' 12.0" P.A. 354 sep 17.5 mag 9.05,14.75 Sp K0
 
 
Coord 2000
17421+2127
Discov num
DRD   1
Comp
Coord arcsec 2000
17 42 00.55 +21 27 12.0
Date first
1982
Date last
2007
Obs
3
Pa first
354
Pa last
354
P.A. Now (θ)
354°
Sep first
17.4
Sep last
17.5
Sep. Now (ρ)
17.5"
Mag pri
9.05
Mag sec
14.75
delta mag (ΔM)
5.7
Spectral class
K0 (yellow-orange)
Pri motion ra
+002
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
354
Precise sep
17.47
Constellation
Hercules
SAO
85331
Tycho2
1563-03054-1
last precise pa
354
last precise sep
17.47
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17421+2127 DRD 1 2007 3 354 17.5 9.05 14.75 K0 N 174200.55+212712.0

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