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Doubles in session


Current system
20421+4532
BKO 157


Nearby doubles
1' : 20420+4532
BRT2271

14' : 20427+4521
ES 1270

17' : 20414+4517
H N 73
Deneb

18' : 20423+4549
STT 411AB

23' : 20440+4521
KPP3361

25' : 20436+4514
CBL 85

29' : 20394+4530
TDS1087

35' : 20434+4501
ES 668AB

37' : 20432+4458
BKO 159

39' : 20433+4456
ES 2699

43' : 20438+4610
TDT2503

49' : 20464+4551
CVR 230

50' : 20437+4619
HO 140

55' : 20427+4627
TDS1092

56' : 20376+4504
HJ 1555

56' : 20473+4535
HO 280

59' : 20461+4452
ES 30

61' : 20459+4448
ES 2701

61' : 20456+4621
HDS2955

63' : 20432+4431
COU2422

66' : 20386+4438
ES 667

66' : 20485+4519
LDS2456

66' : 20431+4637
BRT2273

67' : 20388+4629
BRT2268

68' : 20416+4424
COU2541

69' : 20360+4555
STJ 103



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20421+4532 BKO 157

 
 
20h 42m 05.19s +45° 32' 15.6" P.A. 240.00 sep 8.9 mag 14.10,14.80
 
 
Coord 2000 20421+4532 Discov num BKO 157 Comp Coord arcsec 2000 20 42 05.19 +45 32 15.6
Date first 1998 Date last 2015 Obs 7
Pa first 240 Pa last 240.3 P.A. Now (θ) 240.3°
Sep first 8.9 Sep last 8.855 Sep. Now (ρ) 8.855"
Mag pri 14.10 Mag sec 14.80 delta mag (ΔM) 0.7 Spectral class
Pri motion ra +018 Sec motion ra +022
Pri motion dec +008 Sec motion dec +008
Notes
rPM=0.171 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2070418092043110144
 
 
WDS 20421+4532 BKO 157 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Bko2002 C - Ladanyi, T. & Berko, E. ...................
Bko2002 Webb Soc., Double Star Circ. 10, 2002
Bko2003 C u Ladanyi, T., Berko, E. & Vaskuti, G ...................
Bko2003 Webb Soc., Double Star Circ. 11, 2003
Bko2004 C u Berko, E., Ladanyi, T. & Vaskuti, G ...................
Bko2004 Webb Soc., Double Star Circ. 12, 2004
Bko2005 C u Berko, E., Ladanyi, T. & Vaskuti, G ...................
Bko2005 Webb Soc., Double Star Circ. 13, 2005
Bko2008 C u Berko, E. & Vaskuti, G. ...................
Bko2008 Webb Soc., Double Star Circ. 16, 2008
Bko2008b C u Berko, E. 2008JDSO....4..144B
Bko2008b JDSO 4, 144, 2008
Bko2009 C u Berko, E. 2009JDSO....5...49B
Bko2009 JDSO 5, 49, 2009
Bko2009b C u Berko, E. 2009JDSO....5..168B
Bko2009b JDSO 5, 168, 2009
Bko2009c C u Berko, E. ...................
Bko2009c Webb Soc., Double Star Circ. 17, 2009
Bko2009d C u Berko, E. 2009JDSO....5..189B
Bko2009d JDSO 5, 189, 2009
Bko2010a C u Berko, E. 2010JDSO....6...21B
Bko2010a JDSO 6, 21, 2010
Bko2010b C u Berko, E. ...................
Bko2010b Webb Soc., Double Star Circ. 18, 2010
Bko2011a C u Berko, E. 2011JDSO....7....2B
Bko2011a JDSO 7, 2, 2011
Bko2011b C u Berko, E. ...................
Bko2011b Webb Soc., Double Star Circ. 19, 29, 2011 (BKO 898 - BKO 980)
Bko2011c C u Berko, E. ...................
Bko2011c Webb Soc., Double Star Circ. 19, 42, 2011 (BKO 981 - BKO1042)
Bko2012 C u Berko, E. ...................
Bko2012 Webb Soc., Double Star Circ. 20, 2012
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20421+4532 BKO 157 2003 2 240 8.8 12.40 13.70 D 204205.25+453215.7
20421+4532 BKO 157 2015 4 240 8.9 14.10 14.80 204205.19+453215.6

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

 
 
WDS 20421+4532 BKO 157 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20421+4532 BKO 157 : MEASURES
 
 
No records found.

 
 
WDS 20421+4532 : VIRTUAL EYEPIECE
 
 

20421+4532 BKO 157A mag 14.1 20421+4532 BKO 157B sep 7.0 P.A. 230.80 mag 14.8 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20421+4532 : ALADIN DSS IMAGE @ 20h 42m 05.19s +45° 32' 15.6"
 
 
 
 
WDS 20421+4532 BKO 157 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20421+4532 BKO 157 distance=0' 20420+4532 BRT2271 distance=1' 20427+4521 ES 1270 distance=14' 20423+4549 BKO 158EH distance=17' 20423+4549 BKO 158EF distance=17' 20423+4549 BKO 158EG distance=17' 20423+4549 BKO 158EI distance=17' 20414+4517 H N 73 (Deneb) distance=17' 20423+4549 STT 411AB distance=18' 20423+4549 WAL 132AC distance=18' 20423+4549 BKO 158AF distance=18' 20423+4549 WAL 132BC distance=18' 20423+4549 CTT 15BD distance=18' 20423+4549 CTT 15BE distance=18' 20440+4521 KPP3361 distance=23' 20436+4514 CBL 85 distance=25' 20394+4530 TDS1087 distance=29' 20434+4501 ES 668AB distance=35' 20434+4501 ES 668AC distance=35' 20434+4501 FYM 322AD distance=35' 20432+4458 BKO 159 distance=37' 20433+4456 ES 2699 distance=39' 20438+4610 TDT2503 distance=43' 20464+4551 CVR 230 distance=49' 20437+4619 HO 140 distance=50' 20427+4627 TDS1092 distance=55' 20376+4504 HJ 1555 distance=56' 20473+4535 HO 280 distance=56' 20461+4452 ES 30 distance=59' 20459+4448 ES 2701 distance=61' 20456+4621 HDS2955 distance=61' 20432+4431 COU2422 distance=63' 20386+4438 ES 667 distance=66' 20485+4519 LDS2456 distance=66' 20431+4637 BRT2273 distance=66' 20388+4629 BRT2268 distance=67' 20416+4424 COU2541 distance=68' 20360+4555 STJ 103 distance=69' 20489+4537 HDS2965 distance=72' 20490+4525 SMA 120 distance=74' 20449+4425 ES 1332 distance=74' 20492+4525 COU2646 distance=76' 20466+4632 KUI 101 distance=77' 20348+4531 ES 805 distance=77' 20489+4607 HJ 1581 distance=80' 20437+4651 TDS1096 distance=81' 20343+4520 ES 804BC distance=83' 20343+4520 ES 804AB distance=83' 20500+4521 ES 2702 distance=85' 20494+4458 GRV 384 distance=85' 20472+4427 COU2424 distance=85' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 20421+4532 BKO 157 240 8.9
Show 20420+4532 BRT2271 269 4.5 1
Show 20427+4521 ES 1270 289 5.9 14
Show 20423+4549 BKO 158 EH 340 51.6 17
Show 20423+4549 BKO 158 EF 281 24.9 17
Show 20423+4549 BKO 158 EG 221 28.7 17
Show 20423+4549 BKO 158 EI 236 39.6 17
Show Deneb 20414+4517 H N 73 105 75.6 17
Show 20423+4549 STT 411 AB 349 31.8 18
Show 20423+4549 WAL 132 AC 357 71.2 18
Show 20423+4549 BKO 158 AF 143 41.0 18
Show 20423+4549 WAL 132 BC 4 40.1 18
Show 20423+4549 CTT 15 BD 178 86.6 18
Show 20423+4549 CTT 15 BE 141 87.9 18
Show 20440+4521 KPP3361 134 2.2 23
Show 20436+4514 CBL 85 166 17.7 25
Show 20394+4530 TDS1087 141 1.0 29
Show 20434+4501 ES 668 AB 68 5.2 35
Show 20434+4501 ES 668 AC 269 23.4 35
Show 20434+4501 FYM 322 AD 200 18.7 35
Show 20432+4458 BKO 159 37 13.2 37
Show 20433+4456 ES 2699 296 40.1 39
Show 20438+4610 TDT2503 68 0.5 43
Show 20464+4551 CVR 230 7 112.9 49
Show 20437+4619 HO 140 313 8.0 50
Show 20427+4627 TDS1092 315 0.9 55
Show 20376+4504 HJ 1555 354 13.8 56
Show 20473+4535 HO 280 75 11.7 56
Show 20461+4452 ES 30 57 17.1 59
Show 20459+4448 ES 2701 81 50.9 61
Show 20456+4621 HDS2955 289 0.4 61
Show 20432+4431 COU2422 236 1.3 63
Show 20386+4438 ES 667 185 9.8 66
Show 20485+4519 LDS2456 236 18.0 66
Show 20431+4637 BRT2273 308 4.7 66
Show 20388+4629 BRT2268 320 3.4 67
Show 20416+4424 COU2541 25 0.4 68
Show 20360+4555 STJ 103 338 1.3 69
Show 20489+4537 HDS2965 282 0.1 72
Show 20490+4525 SMA 120 313 4.3 74
Show 20449+4425 ES 1332 325 7.0 74
Show 20492+4525 COU2646 266 0.4 76
Show 20466+4632 KUI 101 112 0.3 77
Show 20348+4531 ES 805 152 7.9 77
Show 20489+4607 HJ 1581 170 22.4 80
Show 20437+4651 TDS1096 147 0.9 81
Show 20343+4520 ES 804 BC 128 2.2 83
Show 20343+4520 ES 804 AB 117 30.8 83
Show 20500+4521 ES 2702 348 8.6 85
Show 20494+4458 GRV 384 222 22.1 85
Show 20472+4427 COU2424 255 0.5 85

 
 
WDS 20421+4532 : COMPONENTS
 
 
  A
B pa=230.8°
sep=6.95"
 
 
20421+4532 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204205.19+453215.6 Mag 14.1 PmRA 18.00
PmDE 8.0
 
 
20421+4532 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204204.68+453211.2 Mag 14.8 PmRA 22.00
PmDE 8.0 Calc delta mag 0.7 Calc coord yes