20180+1544 CHE 284

 
 
20h 17m 58.85s +15 43' 43.3" P.A. 339 sep 30.4 mag 9.45,10.13 Sp G0
 
 
Coord 2000
20180+1544
Discov num
CHE 284
Comp
Coord arcsec 2000
20 17 58.85 +15 43 43.3
Date first
1910
Date last
2015
Obs
14
Pa first
339
Pa last
339
P.A. Now (θ)
339°
Sep first
30.1
Sep last
30.4
Sep. Now (ρ)
30.4"
Mag pri
9.45
Mag sec
10.13
delta mag (ΔM)
0.68
Spectral class
G0 (yellow)
Pri motion ra
-005
Sec motion ra
-006
Pri motion dec
-006
Sec motion dec
+000
Notes
rPM=0.779
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
339.2
Precise sep
30.44
Constellation
Delphinus
Tycho2
1631-00281-1
Gaia DR2
78614524544
HD
355374
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20180+1544 CHE 284 1998 3 339 30.3 9.45 10.13 D 201758.85+154343.3
20180+1544 CHE 284 2008 4 339 30.1 9.45 10.13 D 201758.85+154343.3
20180+1544 CHE 284 2013 8 340 30.0 9.45 10.13 201758.85+154343.3
20180+1544 CHE 284 2015 10 339 30.3 9.45 10.13 G0 201758.85+154343.3

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