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Doubles in session


Current system
20171+1536
CHE 272


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

20171+1536 CHE 272

 
 
20h 17m 04.03s +15° 35' 04.4" P.A. 104.00 sep 17.4 mag 12.70,13.30
 
 
Coord 2000
20171+1536
 Discov num
CHE 272
 Comp
Coord arcsec 2000
20 17 04.03 +15 35 04.4
Date first
1910
 Date last
2019
 Obs
13
Pa first
108
 Pa last
104
 P.A. Now (θ)
104°
Sep first
17.1
 Sep last
17.4
 Sep. Now (ρ)
17.4"
Mag pri
12.70
 Mag sec
13.30
 delta mag (ΔM)
0.6
 Spectral class
Pri motion ra
+003
 Sec motion ra
+007
Pri motion dec
+000
 Sec motion dec
+001
Notes
rPM=0.583
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
104.2
 Precise sep
17.4
 Constellation
Delphinus
 SAO
105920
Gaia DR2
1808415221439300096
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20171+1536 CHE 272 2006 2 105 17.8 10.21 10.37 201704.05+153504.7
20171+1536 CHE 272 2008 3 105 18.0 10.21 10.37 201704.05+153504.7
20171+1536 CHE 272 2010 7 105 17.9 12.70 13.30 201704.03+153504.4
20171+1536 CHE 272 2015 8 105 17.9 12.70 13.30 201704.03+153504.4
20171+1536 CHE 272 2019 13 104 17.4 12.70 13.30 201704.03+153504.4

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