20144+4206 STF2657AC

 
 
20h 14m 21.53s +42 06' 15.6" P.A. 32 sep 11.6 mag 7.28,9.80 Sp B9IV-V dist. 581.4 pc (1896.53 l.y.)
 
 
Coord 2000
20144+4206
Discov num
STF2657
Comp
AC
Coord arcsec 2000
20 14 21.53 +42 06 15.6
Date first
1828
Date last
2015
Obs
38
Pa first
33
Pa last
32
P.A. Now (θ)
32°
Sep first
9.0
Sep last
11.6
Sep. Now (ρ)
11.6"
Mag pri
7.28
Mag sec
9.80
delta mag (ΔM)
2.52
Spectral class
B9IV-V (blue-white)
Pri motion ra
+004
Sec motion ra
+004
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
31.5
Precise sep
11.6
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 STF2657 AC 2000 33 32 11.8 7.28 9.80 D 201421.53+420615.6
20144+4206 STF2657 AC 2002 36 32 11.9 7.28 9.80 D 201421.53+420615.6
20144+4206 STF2657 AC 2015 37 32 11.6 7.28 9.80 B9IV-V 201421.53+420615.6

If you need more information about this double, apply for a data request form to the WDS.