21452+2914 UC 4550

 
 
21h 45m 10.80s +29 14' 21.5" P.A. 15 sep 42.5 mag 8.60,15.70 Sp K2III
 
 
Coord 2000
21452+2914
Discov num
UC 4550
Comp
Coord arcsec 2000
21 45 10.80 +29 14 21.5
Date first
1999
Date last
2015
Obs
3
Pa first
16
Pa last
15
P.A. Now (θ)
15°
Sep first
43.0
Sep last
42.5
Sep. Now (ρ)
42.5"
Mag pri
8.60
Mag sec
15.70
delta mag (ΔM)
7.1
Spectral class
K2III (yellow-orange)
Pri motion ra
+058
Sec motion ra
+054
Pri motion dec
+018
Sec motion dec
+004
Notes
V (Proper motion indicates physical)
rPM=0.24 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
14.5
Precise sep
42.512
Constellation
Cygnus
last precise pa
14.5
last precise sep
42.512
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21452+2914 UC 4550 2000 2 16 43.0 8.60 15.70 V 214510.80+291421.5
21452+2914 UC 4550 2002 2 15 43.1 8.60 15.70 V 214510.80+291421.5
21452+2914 UC 4550 2015 3 15 42.5 8.60 15.70 K2III V 214510.80+291421.5

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