20244+1935 STF2679AC

 
 
20h 24m 22.59s +19 34' 30.0" P.A. 150 sep 38.6 mag 7.88,11.56 Sp A2V+A4 dist. 244.5 pc (797.56 l.y.)
 
 
Coord 2000
20244+1935
Discov num
STF2679
Comp
AC
Coord arcsec 2000
20 24 22.59 +19 34 30.0
Date first
1895
Date last
2017
Obs
17
Pa first
153
Pa last
150
P.A. Now (θ)
150°
Sep first
38.8
Sep last
38.6
Sep. Now (ρ)
38.6"
Mag pri
7.88
Mag sec
11.56
delta mag (ΔM)
3.68
Spectral class
A2V+A4 (white/white)
Pri motion ra
-010
Sec motion ra
+002
Pri motion dec
-012
Sec motion dec
-007
Notes
rPM=0.832
This double is not physical.
 
 
20244+1935 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20244+1935 STF2679 AB 1830 2017 50 77 24.4 7.88 9.69 1.81
Show 20244+1935 STF2679 AC 1895 2017 17 150 38.6 7.88 11.56 3.68 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
149.8
Precise sep
38.596
Constellation
Delphinus
SAO
106068
HIP
100638
Tycho2
1640-01633-1
Gaia DR2
57286040192
HD
194318
BD
BD+19 4396
Distance
244.5
Distance ly
797.56
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20244+1935 STF2679 AC 2005 6 150 38.7 7.88 12.30 A2V D 202422.59+193430.0
20244+1935 STF2679 AC 2013 8 151 38.6 7.88 11.56 A2V 202422.59+193430.0
20244+1935 STF2679 AC 2014 9 150 39.2 7.88 11.56 A2V 202422.59+193430.0
20244+1935 STF2679 AC 2015 10 150 38.5 7.88 11.56 A2V 202422.59+193430.0
20244+1935 STF2679 AC 2016 12 150 38.7 7.88 11.56 A2V+A4 202422.59+193430.0
20244+1935 STF2679 AC 2017 13 150 38.6 7.88 11.56 A2V+A4 202422.59+193430.0

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