20115+3630 SEI 971AB

 
 
20h 11m 27.26s +36 29' 56.8" P.A. 14 sep 14.1 mag 9.30,11.60 Sp B0.5V
 
 
Coord 2000
20115+3630
Discov num
SEI 971
Comp
AB
Coord arcsec 2000
20 11 27.26 +36 29 56.8
Date first
1896
Date last
2015
Obs
11
Pa first
13
Pa last
14
P.A. Now (θ)
14°
Sep first
13.7
Sep last
14.1
Sep. Now (ρ)
14.1"
Mag pri
9.30
Mag sec
11.60
delta mag (ΔM)
2.3
Spectral class
B0.5V (blue-white)
Pri motion ra
-004
Sec motion ra
-001
Pri motion dec
-008
Sec motion dec
-006
Notes
rPM=0.403
Nature of this double is uncertain.
 
 
20115+3630 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20115+3630 SEI 971 AB 1896 2015 11 14 14.1 9.30 11.60 2.30 <===
Show 20115+3630 SLE 954 AC 1896 2015 9 294 24.1 9.30 11.70 2.40
Show 20115+3630 SLE 954 AD 1985 2015 8 357 22.3 9.30 12.80 3.50
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
13.8
Precise sep
14.057
Constellation
Cygnus
SAO
69575
Tycho2
2683-01190-1
Gaia DR2
50701393280
HD
228199
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20115+3630 SEI 971 AB 1998 5 14 14.1 9.30 11.60 B0.5V D 201127.26+362956.8
20115+3630 SEI 971 AB 2002 6 14 14.0 9.30 11.60 B0.5V D 201127.26+362956.8
20115+3630 SEI 971 AB 2015 7 14 14.0 9.30 11.60 B0.5V 201127.26+362956.8

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