18157+3723 ES 2664

 
 
18h 15m 43.85s +37 22' 17.4" P.A. 83 sep 9.2 mag 10.57,10.78
 
 
Coord 2000
18157+3723
Discov num
ES 2664
Comp
Coord arcsec 2000
18 15 43.85 +37 22 17.4
Date first
1923
Date last
2010
Obs
19
Pa first
80
Pa last
83
P.A. Now (θ)
83°
Sep first
9.7
Sep last
9.2
Sep. Now (ρ)
9.2"
Mag pri
10.57
Mag sec
10.78
delta mag (ΔM)
0.21
Spectral class
Pri motion ra
-003
Sec motion ra
-005
Pri motion dec
-004
Sec motion dec
-008
Notes
rPM=0.474
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
83.2
Precise sep
9.2
Constellation
Lyra
Tycho2
2634-00981-2
last precise pa
83.2
last precise sep
9.2
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18157+3723 ES 2664 2006 17 88 9.4 10.57 10.78 D 181543.85+372217.4
18157+3723 ES 2664 2010 18 83 8.7 10.57 10.78 181543.85+372217.4

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