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Doubles in session


Current system
20171+1601
CHE 271


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

20171+1601 CHE 271

 
 
20h 17m 06.03s +16° 00' 49.3" P.A. 34.00 sep 26.3 mag 11.83,13.40
 
 
Coord 2000
20171+1601
 Discov num
CHE 271
 Comp
Coord arcsec 2000
20 17 06.03 +16 00 49.3
Date first
1910
 Date last
2015
 Obs
10
Pa first
33
 Pa last
34
 P.A. Now (θ)
34°
Sep first
25.2
 Sep last
26.3
 Sep. Now (ρ)
26.3"
Mag pri
11.83
 Mag sec
13.40
 delta mag (ΔM)
1.57
 Spectral class
Pri motion ra
-028
 Sec motion ra
+007
Pri motion dec
-015
 Sec motion dec
-001
Notes
rPM=1.187
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
33.9
 Precise sep
26.305
 Constellation
Delphinus
 Gaia DR2
1808461297845338624
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20171+1601 CHE 271 1910 1 33 25.2 10.02 11.00 201709.77+155221.6
20171+1601 CHE 271 1998 2 34 26.1 11.54 13.29 D 201706.03+160049.3
20171+1601 CHE 271 2008 3 33 26.2 11.54 13.29 D 201706.03+160049.3
20171+1601 CHE 271 2010 5 34 26.3 11.83 13.40 201706.03+160049.3
20171+1601 CHE 271 2015 6 34 26.3 11.83 13.40 201706.03+160049.3

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