16271+5457 CVR 821 (RU Cyg)

 
 
16h 27m 09.20s +54 57' 14.2" P.A. 263 sep 7.8 mag 18.80,19.60 Sp M3+M4 dist. 249.38 pc (813.48 l.y.)
 
 
Coord 2000
16271+5457
Discov num
CVR 821
Comp
Coord arcsec 2000
16 27 09.20 +54 57 14.2
Date first
1999
Date last
2015
Obs
3
Pa first
262
Pa last
263
P.A. Now (θ)
263°
Sep first
7.4
Sep last
7.8
Sep. Now (ρ)
7.8"
Mag pri
18.80
Mag sec
19.60
delta mag (ΔM)
0.8
Spectral class
M3+M4 (red/red)
Pri motion ra
+022
Sec motion ra
+020
Pri motion dec
-041
Sec motion dec
-039
Notes
V R (Proper motion indicates physical, Red magnitudes)
rPM=0.462
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name
RU Cyg
Spectr
M8e
Constellation
Cygnus
SAO
33654
HIP
107036
Tycho2
3967-00080-1
HD
206483
BD
BD+53 2684
Distance
249.38
Distance ly
813.48
last precise pa
263.3
last precise sep
7.807
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16271+5457 CVR 821 2004 1 263 7.8 18.80 19.60 M3+M4 V R 162708.30+545713.4
16271+5457 CVR 821 2015 3 263 7.8 18.80 19.60 M3+M4 V R 162709.20+545714.2

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