20277+4507 ROE  43AD

 
 
20h 27m 42.34s +45 06' 37.7" P.A. 271 sep 42.5 mag 9.38,12.47 Sp A2
 
 
Coord 2000
20277+4507
Discov num
ROE  43
Comp
AD
Coord arcsec 2000
20 27 42.34 +45 06 37.7
Date first
1910
Date last
2015
Obs
6
Pa first
271
Pa last
271
P.A. Now (θ)
271°
Sep first
59.4
Sep last
42.5
Sep. Now (ρ)
42.5"
Mag pri
9.38
Mag sec
12.47
delta mag (ΔM)
3.09
Spectral class
A2 (white)
Pri motion ra
-009
Sec motion ra
-008
Pri motion dec
-007
Sec motion dec
+000
Notes
rPM=0.62
Nature of this double is uncertain.
 
 
20277+4507 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20277+4507 ROE 43 AB 1910 2015 6 316 17.5 9.38 14.80 5.42
Show 20277+4507 ROE 43 AC 1910 2015 5 311 52.8 9.38 13.19 3.81
Show 20277+4507 ROE 43 AD 1910 2015 6 271 42.5 9.38 12.47 3.09 <===
Show 20277+4507 ROE 43 AE 1892 2015 11 282 82.9 9.38 11.19 1.81
Show 20277+4507 ROE 43 AF 1892 2015 10 336 87.2 9.38 12.40 3.02
Show 20277+4507 ROE 43 AG 1892 2015 10 282 102.5 9.38 12.85 3.47
Show 20277+4507 BKO 154 AH 1998 2015 4 224 18.5 9.38 12.70 3.32
Show 20277+4507 BKO 154 AI 1998 2015 4 63 24.1 9.38 14.00 4.62
Show 20277+4507 BKO 154 CJ 1998 2015 4 331 17.9 13.40 13.90 0.50
Show 20277+4507 BKO 154 EK 1998 2015 4 109 4.7 11.20 13.00 1.80
11-fold system
11 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
271.4
Precise sep
42.521
Constellation
Cygnus
Tycho2
3573-00540-1
Gaia DR2
60915410304
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20277+4507 ROE 43 AD 2003 4 271 42.6 9.38 12.70 D 202742.34+450637.7
20277+4507 ROE 43 AD 2015 6 271 42.5 9.38 12.47 A2 202742.34+450637.7

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