20111+4131 HJ 1491

 
 
20h 10m 10.59s +41 29' 56.6" P.A. 299.00 sep 4.8 mag 9.56,9.62 Sp F5
 
 
Coord 2000
20111+4131
Discov num
HJ 1491
Comp
Coord arcsec 2000
20 10 10.59 +41 29 56.6
Date first
1828
Date last
2018
Obs
19
Pa first
302
Pa last
299
P.A. Now (θ)
299°
Sep first
2.5
Sep last
4.8
Sep. Now (ρ)
4.8"
Mag pri
9.56
Mag sec
9.62
delta mag (ΔM)
0.06
Spectral class
F5 (yellow-white)
Pri motion ra
+013
Sec motion ra
+014
Pri motion dec
+007
Sec motion dec
+008
Notes
N V (See Notes, Proper motion indicates physical)
Visually invisible, K-band or other infrared star rPM=0.088 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
298.8
Precise sep
4.773
Constellation
Cygnus
Tycho2
3159-00927-1
Gaia DR2
53598782592
HD
228090
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20111+4131 HJ 1491 1937 5 118 4.5 10.30 10.30 201160.00+413100.0
20111+4131 HJ 1491 2008 13 298 4.7 9.56 9.62 N D 201010.59+412956.6
20111+4131 HJ 1491 2010 14 298 4.7 9.56 9.62 N D 201010.59+412956.6
20111+4131 HJ 1491 2016 16 298 4.7 9.56 9.62 F5 N 201010.59+412956.6
20111+4131 HJ 1491 2018 18 299 4.8 9.56 9.62 F5 N 201010.59+412956.6

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