20184+4033 ARN  49

 
 
20h 18m 24.24s +40 32' 32.8" P.A. 313 sep 30.2 mag 9.59,10.36 Sp K2
 
 
Coord 2000
20184+4033
Discov num
ARN  49
Comp
Coord arcsec 2000
20 18 24.24 +40 32 32.8
Date first
1892
Date last
2015
Obs
16
Pa first
314
Pa last
313
P.A. Now (θ)
313°
Sep first
31.6
Sep last
30.2
Sep. Now (ρ)
30.2"
Mag pri
9.59
Mag sec
10.36
delta mag (ΔM)
0.77
Spectral class
K2 (yellow-orange)
Pri motion ra
+008
Sec motion ra
+015
Pri motion dec
+016
Sec motion dec
+008
Notes
rPM=0.594
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
313.2
Precise sep
30.152
Constellation
Cygnus
SAO
49446
Tycho2
3155-00379-1
Gaia DR2
12268666624
HD
228846
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20184+4033 ARN 49 2003 9 313 30.6 9.59 10.36 D 201824.24+403232.8
20184+4033 ARN 49 2010 11 313 30.2 9.59 10.36 K2 201824.24+403232.8
20184+4033 ARN 49 2015 12 313 30.2 9.59 10.36 K2 201824.24+403232.8

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