20165+3739 BU  442BD

 
 
20h 16m 31.39s +37 38' 31.2" P.A. 1 sep 19.9 mag 8.04,12.60 Sp B0.5II
 
 
Coord 2000
20165+3739
Discov num
BU  442
Comp
BD
Coord arcsec 2000
20 16 31.39 +37 38 31.2
Date first
1896
Date last
2015
Obs
8
Pa first
2
Pa last
1
P.A. Now (θ)
Sep first
19.8
Sep last
19.9
Sep. Now (ρ)
19.9"
Mag pri
8.04
Mag sec
12.60
delta mag (ΔM)
4.56
Spectral class
B0.5II (blue-white)
Pri motion ra
-006
Sec motion ra
-003
Pri motion dec
-001
Sec motion dec
-003
Notes
N (See Notes)
rPM=0.593
Nature of this double is uncertain.
 
 
20165+3739 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20165+3739 BU 442 AB 1876 2015 28 103 18.7 9.72 8.04 1.68
Show 20165+3739 SLV 8 AC 1896 2015 13 77 31.8 9.72 8.82 0.90
Show 20165+3739 ABH 135 AD 1896 2015 8 50 24.5 9.72 12.60 2.88
Show 20165+3739 SLE 982 AG 1896 2012 10 11 88.6 9.72 10.61 0.89
Show 20165+3739 SLE 982 AH 1985 2008 4 20 111.5 9.72 13.47 3.75
Show 20165+3739 SLE 982 AI 1985 2008 4 45 63.3 9.72 13.50 3.78
Show 20165+3739 SLE 982 AJ 1985 2012 5 35 96.5 9.72 13.10 3.38
Show 20165+3739 SLE 982 AK 1896 2012 8 35 114.7 9.72 11.49 1.77
Show 20165+3739 SLE 982 AL 1985 2008 5 28 177.6 9.72 9.49 0.23
Show 20165+3739 SLE 982 AM 1985 2012 5 66 89.0 9.72 13.20 3.48
Show 20165+3739 SLE 982 AN 1896 2012 8 77 156.2 9.72 12.41 2.69
Show 20165+3739 SLE 982 AO 1985 2012 5 119 59.4 9.72 12.70 2.98
Show 20165+3739 BU 442 AP 1876 2016 19 156 4.1 9.72 10.80 1.08
Show 20165+3739 BU 442 AQ 1888 2015 8 157 8.7 9.72 13.10 3.38
Show 20165+3739 BU 442 AR 1876 2015 17 332 19.2 9.72 11.07 1.35
Show 20165+3739 BU 442 BC 1876 2015 36 49 16.8 8.04 8.82 0.78
Show 20165+3739 BU 442 BD 1896 2015 8 1 19.9 8.04 12.60 4.56 <===
Show 20165+3739 ABH 135 BE 1896 2012 9 89 50.1 8.04 12.89 4.85
Show 20165+3739 ABH 135 BF 1988 2012 5 141 64.0 8.04 12.46 4.42
Show 20165+3739 ABH 135 BO 1988 2008 4 126 41.3 8.04 12.70 4.66
Show 20165+3739 BU 442 BP 1896 2012 7 283 18.0 8.04 10.80 2.76
Show 20165+3739 BU 442 BR 1876 2012 15 308 34.8 8.04 11.07 3.03
Show 20165+3739 BU 442 BS 1898 2016 5 124 3.7 8.04 14.50 6.46
Show 20165+3739 BU 442 BT 1876 2016 11 164 6.7 8.04 11.50 3.46
Show 20165+3739 BU 442 BU 1896 2012 10 75 25.1 8.04 11.50 3.46
Show 20165+3739 BU 442 BV 1896 2012 9 87 31.0 8.04 12.00 3.96
Show 20165+3739 BU 442 CD 1896 2015 10 306 15.2 8.82 12.60 3.78
Show 20165+3739 BU 442 CU 1879 2016 15 110 12.4 8.82 11.50 2.68
Show 20165+3739 BU 442 CV 1879 2016 16 116 20.2 8.82 12.00 3.18
Show 20165+3739 BU 442 UV 1896 2012 8 127 8.1 11.50 12.00 0.50
22-fold system
22 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
1.1
Precise sep
19.89
Cdsa2 id
BU 442 BD
Constellation
Cygnus
Ra deg
20.27538611111111
De deg
37.642
last precise pa
1.1
last precise sep
19.89
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20165+3739 BU 442 BD 2012 6 2 20.0 8.04 12.60 B0.5II N 201631.39+373831.2
20165+3739 BU 442 BD 2015 8 1 19.9 8.04 12.60 B0.5II N 201631.39+373831.2

If you need more information about this double, apply for a data request form to the WDS.