21087+1717 HEI 184

 
 
21h 08m 37.95s +17 17' 20.8" P.A. 62 sep 2.9 mag 12.47,12.80
 
 
Coord 2000
21087+1717
Discov num
HEI 184
Comp
Coord arcsec 2000
21 08 37.95 +17 17 20.8
Date first
1980
Date last
2016
Obs
4
Pa first
66
Pa last
62
P.A. Now (θ)
62°
Sep first
2.5
Sep last
2.9
Sep. Now (ρ)
2.9"
Mag pri
12.47
Mag sec
12.80
delta mag (ΔM)
0.33
Spectral class
Pri motion ra
-001
Sec motion ra
Pri motion dec
-008
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
62
Precise sep
2.9
Constellation
Delphinus
last precise pa
62
last precise sep
2.9
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21087+1717 HEI 184 1996 2 63 2.5 12.47 12.80 210837.95+171720.8
21087+1717 HEI 184 2001 3 62 3.0 12.47 12.80 210837.95+171720.8
21087+1717 HEI 184 2016 4 62 2.9 12.47 12.80 210837.95+171720.8

If you need more information about this double, apply for a data request form to the WDS.