20138+1450 BKO 537BC

 
 
20h 13m 46.98s +14 50' 13.2" P.A. 106.00 sep 4.7 mag 13.70,14.40
 
 
Coord 2000
20138+1450
Discov num
BKO 537
Comp
BC
Coord arcsec 2000
20 13 46.98 +14 50 13.2
Date first
1998
Date last
2015
Obs
4
Pa first
107
Pa last
106
P.A. Now (θ)
106°
Sep first
4.6
Sep last
4.7
Sep. Now (ρ)
4.7"
Mag pri
13.70
Mag sec
14.40
delta mag (ΔM)
0.7
Spectral class
Pri motion ra
-011
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
N R (See Notes, Red magnitudes)
Visually invisible, K-band or other infrared star Nature of this double is uncertain.
 
 
20138+1450 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 105858 20138+1450 CHE 218 AB 1910 2015 7 221 26.5 12.17 13.70 1.53
Show 105858 20138+1450 BKO 537 BC 1998 2015 4 106 4.7 13.70 14.40 0.70 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
105.8
Precise sep
4.654
Constellation
Aquila
SAO
105858
Gaia DR2
68893117824
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20138+1450 BKO 537 BC 2008 1 108 4.6 10.10 13.00 N 201346.98+145013.2
20138+1450 BKO 537 BC 2015 4 106 4.7 13.70 14.40 N R 201346.98+145013.2

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