20190+4938 ES 2693AB

 
 
20h 18m 58.13s +49 37' 35.9" P.A. 111 sep 30.6 mag 8.76,9.59 Sp A2
 
 
Coord 2000
20190+4938
Discov num
ES 2693
Comp
AB
Coord arcsec 2000
20 18 58.13 +49 37 35.9
Date first
1899
Date last
2018
Obs
16
Pa first
111
Pa last
111
P.A. Now (θ)
111°
Sep first
31.4
Sep last
30.6
Sep. Now (ρ)
30.6"
Mag pri
8.76
Mag sec
9.59
delta mag (ΔM)
0.83
Spectral class
A2 (white)
Pri motion ra
+009
Sec motion ra
+005
Pri motion dec
-002
Sec motion dec
+001
Notes
rPM=0.542
Nature of this double is uncertain.
 
 
20190+4938 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20190+4938 ES 2693 AB 1899 2018 16 111 30.6 8.76 9.59 0.83 <===
Show 20190+4938 ES 2693 BC 1911 2015 8 189 18.5 9.59 12.20 2.61
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
110.7
Precise sep
30.61
Constellation
Cygnus
SAO
49464
Tycho2
3580-01850-1
Gaia DR2
13509371392
HD
193609
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20190+4938 ES 2693 AB 2004 10 110 30.6 8.76 9.59 A2 D 201858.13+493735.9
20190+4938 ES 2693 AB 2015 12 110 30.6 8.76 9.59 A2 201858.13+493735.9
20190+4938 ES 2693 AB 2018 13 111 30.6 8.76 9.59 A2 201858.13+493735.9

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