20178+0612 AG  251AB

 
 
20h 17m 46.09s +06 11' 37.8" P.A. 186 sep 7.1 mag 8.61,10.00 Sp A3
 
 
Coord 2000
20178+0612
Discov num
AG  251
Comp
AB
Coord arcsec 2000
20 17 46.09 +06 11 37.8
Date first
1894
Date last
2015
Obs
26
Pa first
187
Pa last
186
P.A. Now (θ)
186°
Sep first
9.0
Sep last
7.1
Sep. Now (ρ)
7.1"
Mag pri
8.61
Mag sec
10.00
delta mag (ΔM)
1.39
Spectral class
A3 (white)
Pri motion ra
-004
Sec motion ra
-005
Pri motion dec
+004
Sec motion dec
+002
Notes
rPM=0.395
Nature of this double is uncertain.
 
 
20178+0612 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20178+0612 AG 251 AB 1894 2015 26 186 7.1 8.61 10.00 1.39 <===
Show 20178+0612 AG 251 AC 1911 2015 8 221 87.7 8.61 12.11 3.50
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
185.5
Precise sep
7.12
Constellation
Aquila
Tycho2
0508-02203-1
Gaia DR2
17137656576
HD
192994
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20178+0612 AG 251 AB 2000 16 185 7.3 8.61 10.00 A3 D 201746.09+061137.8
20178+0612 AG 251 AB 2011 19 185 7.3 8.61 10.00 A3 D 201746.09+061137.8
20178+0612 AG 251 AB 2013 21 185 7.3 8.61 10.00 A3 201746.09+061137.8
20178+0612 AG 251 AB 2015 22 186 7.1 8.61 10.00 A3 201746.09+061137.8

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