18094+1311 HEI 558

 
 
18h 09m 26.43s +13 10' 38.2" P.A. 142 sep 2.7 mag 10.90,11.70
 
 
Coord 2000
18094+1311
Discov num
HEI 558
Comp
Coord arcsec 2000
18 09 26.43 +13 10 38.2
Date first
1987
Date last
2005
Obs
2
Pa first
144
Pa last
142
P.A. Now (θ)
142°
Sep first
2.6
Sep last
2.7
Sep. Now (ρ)
2.7"
Mag pri
10.90
Mag sec
11.70
delta mag (ΔM)
0.8
Spectral class
Pri motion ra
-010
Sec motion ra
Pri motion dec
+013
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
141.6
Precise sep
2.69
Constellation
Ophiuchus
Tycho2
1021-01401-1
last precise pa
141.6
last precise sep
2.69
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18094+1311 HEI 558 2005 2 142 2.7 10.90 11.70 180926.43+131038.2

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