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Doubles in session


Current system
20169+1506
CHE 268 AC


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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20169+1506 CHE 268 AC

 
 
20h 16m 56.66s +15° 05' 34.6" P.A. 337.00 sep 21.4 mag 12.20,12.49 Sp F4V
 
 
Coord 2000 20169+1506 Discov num CHE 268 Comp AC Coord arcsec 2000 20 16 56.66 +15 05 34.6
Date first 1910 Date last 2015 Obs 9
Pa first 341 Pa last 337 P.A. Now (θ) 337°
Sep first 22.4 Sep last 21.415 Sep. Now (ρ) 21.415"
Mag pri 12.20 Mag sec 12.49 delta mag (ΔM) 0.29 Spectral class F4V (yellow-white)
Pri motion ra +016 Sec motion ra -010
Pri motion dec +004 Sec motion dec -014
Notes U (Proper motion indicates non-physical)
rPM=1.838
This double is not physical.
 
 
20169+1506 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 16 57 +15 05 35 CHE 268 AB 2015 11 213 10.2 12.20 12.30 0.10
Show 20 16 57 +15 05 35 CHE 268 AC 2015 9 337 21.4 12.20 12.49 0.29 <===
Show 20 16 57 +15 05 35 ABH 136 AD 2015 10 281 39.7 12.20 13.86 1.66
Show 20 16 57 +15 05 35 ABH 136 AE 2015 9 231 74.0 12.20 15.80 3.60
Show 20 16 57 +15 05 35 ABH 136 AF 2015 7 217 52.4 12.20 14.80 2.60
Show 20 16 57 +15 05 35 ABH 136 AG 2015 9 212 51.0 12.20 14.70 2.50
Show 20 16 57 +15 05 35 ABH 136 AH 2015 9 190 55.4 12.20 14.50 2.30
Show 20 16 57 +15 05 35 ABH 136 AI 2015 9 181 67.9 12.20 15.40 3.20
Show 20 16 57 +15 05 35 ABH 136 AJ 2015 10 57 93.0 12.20 15.30 3.10
Show 20 16 57 +15 05 35 ABH 136 AK 2015 10 65 103.2 12.20 15.80 3.60
Show 20 16 57 +15 05 35 ABH 136 AL 2015 10 64 125.3 12.20 15.80 3.60
Show 20 16 56 +15 05 26 CHE 268 BC 2015 9 354 28.4 12.30 12.49 0.19
12-fold system
12 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus Gaia DR2 1808244384820097408