21080+0539 HJ 3011AB

 
 
21h 07m 59.02s +05 39' 06.0" P.A. 254 sep 11.5 mag 8.30,14.50 Sp K0
 
 
Coord 2000
21080+0539
Discov num
HJ 3011
Comp
AB
Coord arcsec 2000
21 07 59.02 +05 39 06.0
Date first
1830
Date last
2000
Obs
4
Pa first
255
Pa last
254
P.A. Now (θ)
254°
Sep first
20.0
Sep last
11.5
Sep. Now (ρ)
11.5"
Mag pri
8.30
Mag sec
14.50
delta mag (ΔM)
6.2
Spectral class
K0 (yellow-orange)
Pri motion ra
-022
Sec motion ra
Pri motion dec
-117
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21080+0539 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21080+0539 HJ 3011 AB 1830 2000 4 254 11.5 8.30 14.50 6.20 <===
Show 21080+0539 BU 9018 AC 1901 2015 4 252 139.3 8.30 12.49 4.19
Show 21080+0539 BU 9018 CD 2000 2015 4 338 5.9 13.00 13.30 0.30
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
254.2
Precise sep
11.5
Constellation
Equuleus
Tycho2
0539-02130-1
Gaia DR2
1733624555023358976
HD
201220
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21080+0539 HJ 3011 AB 2000 4 254 11.5 8.30 14.50 K0 210759.02+053906.0

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