20197+4151 MMA   3

 
 
20h 19m 39.66s +41 51' 10.6" P.A. 105.00 sep 11.0 mag 11.80,13.50
 
 
Coord 2000
20197+4151
Discov num
MMA   3
Comp
Coord arcsec 2000
20 19 39.66 +41 51 10.6
Date first
1983
Date last
2015
Obs
11
Pa first
104
Pa last
105
P.A. Now (θ)
105°
Sep first
11.1
Sep last
11.0
Sep. Now (ρ)
11"
Mag pri
11.80
Mag sec
13.50
delta mag (ΔM)
1.7
Spectral class
Pri motion ra
-005
Sec motion ra
-010
Pri motion dec
-009
Sec motion dec
-015
Notes
rPM=0.433
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
105.4
Precise sep
10.951
Constellation
Cygnus
Tycho2
3159-00108-1
Gaia DR2
03429042688
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20197+4151 MMA 3 2009 1 107 10.6 11.80 13.50 201939.66+415110.6
20197+4151 MMA 3 2015 7 105 10.9 11.80 13.50 201939.66+415110.6

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