20144+4206 STT 403AB

 
 
20h 14m 21.53s +42 06' 15.6" P.A. 171 sep 1 mag 7.31,7.64 Sp B9IV-V dist. 581.4 pc (1896.53 l.y.)
 
 
Coord 2000
20144+4206
Discov num
STT 403
Comp
AB
Coord arcsec 2000
20 14 21.53 +42 06 15.6
Date first
1843
Date last
2016
Obs
95
Pa first
168
Pa last
171
P.A. Now (θ)
171°
Sep first
0.6
Sep last
1.0
Sep. Now (ρ)
1"
Mag pri
7.31
Mag sec
7.64
delta mag (ΔM)
0.33
Spectral class
B9IV-V (blue-white)
Pri motion ra
+002
Sec motion ra
+002
Pri motion dec
-002
Sec motion dec
-002
Notes
Nature of this double is uncertain.
 
 
20144+4206 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 49345 20144+4206 STT 403 AB 1843 2016 95 171 1.0 7.31 7.64 0.33 <===
Show 20144+4206 STF2657 AC 1828 2015 38 32 11.6 7.28 9.80 2.52
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
170.5
Precise sep
0.977
Constellation
Cygnus
SAO
49345
HIP
99749
Tycho2
3159-01225-1
Gaia DR2
45889489664
HD
192659
HR
7737
BD
BD+41 3668
Distance
581.4
Distance ly
1896.53
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20144+4206 STT 403 AB 2005 94 171 0.9 7.31 7.64 B9IV-V D 201421.53+420615.6
20144+4206 STT 403 AB 2009 97 171 0.9 7.31 7.64 B9IV-V D 201421.53+420615.6
20144+4206 STT 403 AB 2013 100 171 0.9 7.31 7.64 B9IV-V D 201421.53+420615.6
20144+4206 STT 403 AB 2015 94 172 0.9 7.31 7.64 B9IV-V 201421.53+420615.6
20144+4206 STT 403 AB 2016 95 171 1.0 7.31 7.64 B9IV-V 201421.53+420615.6

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