20423+4549 CTT  15BE

 
 
20h 42m 19.66s +45 49' 53.1" P.A. 142 sep 87.9 mag 10.58,10.55 dist. 54.14 pc (176.6 l.y.)
 
 
Coord 2000
20423+4549
Discov num
CTT  15
Comp
BE
Coord arcsec 2000
20 42 19.66 +45 49 53.1
Date first
1892
Date last
2008
Obs
7
Pa first
142
Pa last
142
P.A. Now (θ)
142°
Sep first
88.0
Sep last
87.9
Sep. Now (ρ)
87.9"
Mag pri
10.58
Mag sec
10.55
delta mag (ΔM)
0.03
Spectral class
Pri motion ra
-001
Sec motion ra
-001
Pri motion dec
-009
Sec motion dec
-002
Notes
N (See Notes)
rPM=0.773
Nature of this double is uncertain.
 
 
20423+4549 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 49960 20423+4549 STT 411 AB 1845 2012 37 349 31.5 7.66 10.58 2.92
Show 49960 20423+4549 WAL 132 AC 1892 2008 10 357 70.2 7.66 10.23 2.57
Show 49960 20423+4549 BKO 158 AF 1998 2012 5 144 41.0 7.66 12.20 4.54
Show 49960 20423+4549 WAL 132 BC 1892 2008 10 4 40.1 10.58 10.23 0.35
Show 49960 20423+4549 CTT 15 BD 1892 2008 8 178 86.7 10.58 10.60 0.02
Show 49960 20423+4549 CTT 15 BE 1892 2008 7 142 87.9 10.58 10.55 0.03 <===
Show 20423+4549 BKO 158 EF 1998 2012 5 281 25.0 10.55 12.20 1.65
Show 20423+4549 BKO 158 EG 1998 2008 4 221 28.7 10.55 14.00 3.45
Show 20423+4549 BKO 158 EH 1998 2008 4 340 51.7 10.55 12.60 2.05
Show 20423+4549 BKO 158 EI 1998 2008 4 236 39.2 10.55 13.60 3.05
Ninefold system
9 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
141.5
Precise sep
87.9
Spectr
G2V
Constellation
Cygnus
SAO
49960
HIP
102189
Tycho2
3574-02567-1
HD
197488
BD
BD+45 3245
Distance
54.14
Distance ly
176.6
last precise pa
141.5
last precise sep
87.9
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20423+4549 CTT 15 BE 2008 6 142 87.9 10.58 10.30 D 204219.66+454953.1

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