20177+3331 HJ 1500AB

 
 
20h 17m 43.96s +33 31' 18.7" P.A. 53 sep 17.7 mag 9.45,10.60 Sp F5
 
 
Coord 2000
20177+3331
Discov num
HJ 1500
Comp
AB
Coord arcsec 2000
20 17 43.96 +33 31 18.7
Date first
1828
Date last
2015
Obs
17
Pa first
111
Pa last
53
P.A. Now (θ)
53°
Sep first
10.0
Sep last
17.7
Sep. Now (ρ)
17.7"
Mag pri
9.45
Mag sec
10.60
delta mag (ΔM)
1.15
Spectral class
F5 (yellow-white)
Pri motion ra
+015
Sec motion ra
+051
Pri motion dec
-031
Sec motion dec
+044
Notes
rPM=1.235
This double is not physical.
 
 
20177+3331 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20177+3331 HJ 1500 AB 1828 2015 17 53 17.7 9.45 10.60 1.15 <===
Show 20177+3331 HJ 1500 AC 1904 2015 10 336 32.2 9.45 12.80 3.35
Show 20177+3331 HJ 1500 AD 1904 2015 12 318 40.9 9.45 12.40 2.95
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
53.3
Precise sep
17.7
Constellation
Cygnus
SAO
69767
Tycho2
2676-00756-1
Gaia DR2
54020660864
HD
228771
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20177+3331 HJ 1500 AB 1999 8 54 17.1 9.45 10.60 D 201743.96+333118.7
20177+3331 HJ 1500 AB 2002 10 53 17.2 9.45 10.60 D 201743.96+333118.7
20177+3331 HJ 1500 AB 2011 11 53 17.8 9.45 10.60 D 201743.96+333118.7
20177+3331 HJ 1500 AB 2013 12 52 18.0 9.45 10.60 F5 201743.96+333118.7
20177+3331 HJ 1500 AB 2015 13 53 17.7 9.45 10.60 F5 201743.96+333118.7

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