20165+3739 BU  442BC

 
 
20h 16m 31.39s +37 38' 31.2" P.A. 49 sep 16.8 mag 8.04,8.82 Sp B0.5II
 
 
Coord 2000
20165+3739
Discov num
BU  442
Comp
BC
Coord arcsec 2000
20 16 31.39 +37 38 31.2
Date first
1876
Date last
2015
Obs
37
Pa first
49
Pa last
49
P.A. Now (θ)
49°
Sep first
17.7
Sep last
16.8
Sep. Now (ρ)
16.8"
Mag pri
8.04
Mag sec
8.82
delta mag (ΔM)
0.78
Spectral class
B0.5II (blue-white)
Pri motion ra
-006
Sec motion ra
-004
Pri motion dec
-001
Sec motion dec
-004
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 69728 20165+3739 BU 442 AB 1876 2015 29 102 18.7 9.72 8.04 1.68
Show 69728 20165+3739 SLV 8 AC 1896 2015 13 77 31.8 9.72 8.82 0.90
Show 69728 20165+3739 ABH 135 AD 1896 2015 8 50 24.5 9.72 12.60 2.88
Show 69728 20165+3739 SLE 982 AG 1896 2015 11 10 88.5 9.72 10.61 0.89
Show 69728 20165+3739 SLE 982 AH 1985 2008 4 20 111.5 9.72 13.47 3.75
Show 69728 20165+3739 SLE 982 AI 1985 2015 5 44 63.3 9.72 13.50 3.78
Show 69728 20165+3739 SLE 982 AJ 1985 2012 5 35 96.5 9.72 13.10 3.38
Show 69728 20165+3739 SLE 982 AK 1896 2012 8 35 114.7 9.72 11.49 1.77
Show 69728 20165+3739 SLE 982 AL 1985 2015 6 27 177.5 9.72 9.49 0.23
Show 69728 20165+3739 SLE 982 AM 1985 2015 6 65 89.2 9.72 13.20 3.48
Show 69728 20165+3739 SLE 982 AN 1896 2012 8 77 156.2 9.72 12.41 2.69
Show 69728 20165+3739 SLE 982 AO 1985 2015 6 118 59.1 9.72 12.70 2.98
Show 69728 20165+3739 BU 442 AP 1876 2016 20 156 4.1 9.72 10.80 1.08
Show 69728 20165+3739 BU 442 AQ 1888 2015 9 157 8.7 9.72 13.10 3.38
Show 69728 20165+3739 BU 442 AR 1876 2015 18 332 19.2 9.72 11.07 1.35
Show 69728 20165+3739 BU 442 BC 1876 2015 37 49 16.8 8.04 8.82 0.78 <===
Show 69728 20165+3739 BU 442 BD 1896 2015 9 1 19.9 8.04 12.60 4.56
Show 69728 20165+3739 ABH 135 BE 1896 2015 10 88 50.0 8.04 12.89 4.85
Show 69728 20165+3739 ABH 135 BF 1988 2015 6 140 64.2 8.04 12.46 4.42
Show 69728 20165+3739 ABH 135 BO 1988 2015 5 125 41.4 8.04 12.70 4.66
Show 69728 20165+3739 BU 442 BP 1896 2015 8 282 18.7 8.04 10.80 2.76
Show 69728 20165+3739 BU 442 BR 1876 2015 16 307 34.5 8.04 11.07 3.03
Show 69728 20165+3739 BU 442 BS 1898 2016 5 124 3.7 8.04 14.50 6.46
Show 69728 20165+3739 BU 442 BT 1876 2016 12 164 6.7 8.04 11.50 3.46
Show 69728 20165+3739 BU 442 BU 1896 2015 11 74 25.4 8.04 11.50 3.46
Show 69728 20165+3739 BU 442 BV 1896 2015 10 86 31.1 8.04 12.00 3.96
Show 69730 20165+3739 BU 442 CD 1896 2015 11 306 15.2 8.82 12.60 3.78
Show 69730 20165+3739 BU 442 CU 1879 2016 16 110 12.4 8.82 11.50 2.68
Show 69730 20165+3739 BU 442 CV 1879 2016 17 116 20.2 8.82 12.00 3.18
Show 69730 20165+3739 BU 442 UV 1896 2015 9 126 8.1 11.50 12.00 0.50
22-fold system
22 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
49
Precise sep
16.786
Constellation
Cygnus
SAO
69728
Tycho2
3151-03443-1
HD
193007
 
 
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 BC 2004 31 48 17.8 8.04 8.82 N D 201631.39+373831.2
20165+3739 BU 442 BC 2008 32 50 16.9 8.04 8.82 N D 201631.39+373831.2
20165+3739 BU 442 BC 2012 34 50 16.9 8.04 8.82 N D 201631.39+373831.2
20165+3739 BU 442 BC 2015 36 49 16.8 8.04 8.82 B0.5II N 201631.39+373831.2

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