18545+3654 ES 2028BC

 
 
18h 54m 28.99s +36 55' 20.1" P.A. 135 sep 2.1 mag 11.20,11.60 Sp G2IV
 
 
Coord 2000
18545+3654
Discov num
ES 2028
Comp
BC
Coord arcsec 2000
18 54 28.99 +36 55 20.1
Date first
1923
Date last
2008
Obs
7
Pa first
138
Pa last
135
P.A. Now (θ)
135°
Sep first
2.2
Sep last
2.1
Sep. Now (ρ)
2.1"
Mag pri
11.20
Mag sec
11.60
delta mag (ΔM)
0.4
Spectral class
G2IV (yellow)
Pri motion ra
-004
Sec motion ra
Pri motion dec
+001
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18545+3654 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Del2 Lyr 67559 18545+3654 ES 2028 AB 1923 2014 13 349 86.3 4.30 11.20 6.90
Show 18545+3654 SMR 13 AD 1879 2014 14 210 193.1 4.46 8.77 4.31
Show 18545+3654 SMR 13 AE 1933 2014 10 238 400.6 4.46 10.30 5.84
Show 18545+3654 SMR 13 AF 1922 2014 14 245 369.4 4.46 8.80 4.34
Show 18545+3654 SMR 13 AG 1930 2014 12 261 335.9 4.46 9.79 5.33
Show 18545+3654 SMR 13 AH 1921 2014 14 284 229.4 4.46 8.67 4.21
Show 18545+3654 SMR 13 AJ 1933 2014 9 249 279.5 4.30 12.00 7.70
Show 18545+3654 SMR 13 AK 1933 2014 9 236 304.2 4.30 12.00 7.70
Show 18545+3654 ES 2028 BC 1923 2008 7 135 2.1 11.20 11.60 0.40 <===
Show 18545+3654 SMR 13 HI 1999 2014 8 251 26.3 8.67 12.90 4.23
11-fold system
11 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
134.8
Precise sep
2.09
Cdsa2 id
ES 2028 BC
Constellation
Lyra
Ra deg
18.908052777777776
De deg
36.92225
last precise pa
134.8
last precise sep
2.09
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18545+3654 ES 2028 BC 2005 6 136 1.9 11.20 11.60 N 185428.99+365520.1
18545+3654 ES 2028 BC 2008 7 135 2.1 11.20 11.60 N 185428.99+365520.1

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