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Doubles in session


Current system
20277+4507
BKO 154 EK


Nearby doubles
6' : 20281+4509
TDS1075

11' : 20282+4458
ES 661

18' : 20264+4520
KPP 472

19' : 20293+4508
RAO 434

22' : 20295+4516
ES 662

31' : 20272+4437
BRT2264

32' : 20258+4533
TDT2263

33' : 20270+4539
HJ 1518

37' : 20295+4437
TDT2320

37' : 20246+4529
HJ 1514

40' : 20240+4457
ES 1331

41' : 20303+4439
ES 1441

41' : 20291+4544
BU 1135

44' : 20238+4525
ES 801

46' : 20305+4434
ES 1442

48' : 20237+4442
ES 1330

56' : 20300+4556
LSC 91

56' : 20317+4540
HJ 1533

65' : 20269+4611
BRT2263

65' : 20217+4522
BRT2261

69' : 20223+4546
POP 144

73' : 20343+4520
ES 804AB

73' : 20303+4401
TDT2326

74' : 20338+4540
A 740

75' : 20328+4418
COU2645

75' : 20267+4353
FYM 258AB



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.

20277+4507 BKO 154 EK

 
 
20h 27m 34.68s +45° 06' 54.6" P.A. 109.00 sep 4.7 mag 11.20,13.00
 
 
Coord 2000 20277+4507 Discov num BKO 154 Comp EK Coord arcsec 2000 20 27 34.68 +45 06 54.6
Date first 1998 Date last 2015 Obs 4
Pa first 107 Pa last 108.6 P.A. Now (θ) 108.6°
Sep first 4.8 Sep last 4.724 Sep. Now (ρ) 4.724"
Mag pri 11.20 Mag sec 13.00 delta mag (ΔM) 1.8 Spectral class
Pri motion ra -004 Sec motion ra
Pri motion dec +003 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20277+4507 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 27 42 +45 06 38 ROE 43 AB 2015 9 317 17.4 9.38 14.80 5.42
Show 20 27 42 +45 06 38 ROE 43 AC 2015 8 312 52.6 9.38 13.19 3.81
Show 20 27 42 +45 06 38 ROE 43 AD 2015 9 271 42.4 9.38 12.47 3.09
Show 20 27 42 +45 06 38 ROE 43 AE 2015 11 282 82.9 9.38 11.19 1.81
Show 20 27 42 +45 06 38 ROE 43 AF 2015 13 336 87.1 9.38 12.40 3.02
Show 20 27 42 +45 06 38 ROE 43 AG 2015 13 282 102.4 9.38 12.85 3.47
Show 20 27 42 +45 06 38 BKO 154 AH 2015 7 224 18.4 9.38 12.70 3.32
Show 20 27 42 +45 06 38 BKO 154 AI 2015 7 63 24.2 9.38 14.00 4.62
Show 20 27 39 +45 07 13 BKO 154 CJ 2015 4 331 17.9 13.40 13.90 0.50
Show 20 27 35 +45 06 55 BKO 154 EK 2015 4 109 4.7 11.20 13.00 1.80 <===
11-fold system
11 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3573-00591-1 Gaia DR2 2070872117318026240
 
 
WDS 20277+4507 BKO 154 EK : 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
Roe1908 Ma - Roe, E.D. 1908AN....178..169R
Roe1908 AN 178, 169, 1908
Roe1909 Ma - Roe, E.D. 1909AN....181..285R
Roe1909 AN 181, 285, 1909
Roe1910a Ma - Roe, E.D. 1910AJ.....26...93R
Roe1910a AJ 26, 93, 1910
Roe1910b Ma j Roe, E.D. ...................
Roe1910b Journal Astronomique 1, no. 4, 25, 1910
Roe1910c Ma - Roe, E.D. 1910AN....183..197R
Roe1910c AN 183, 197, 1910
Roe1910d Ma j Roe, E.D. 1910PA.....18..354R
Roe1910d Popular Astronomy 18, 354, 1910
Roe1910e Ma j Roe, E.D. 1910PA.....18..554R
Roe1910e Popular Astronomy 18, 554, 1910
Roe1911a Ma - Roe, E.D. 1911AN....187...39R
Roe1911a AN 187, 39, 1911
Roe1911b Ma - Roe, E.D. 1911AN....188..373R
Roe1911b AN 188, 373, 1911
Roe1911c Ma - Roe, E.D. 1911AN....190..137R
Roe1911c AN 190, 137, 1911
Roe1911d Ma j Roe, E.D. 1911PA.....19..383R
Roe1911d Popular Astronomy 19, 383, 1911
Roe1914 Ma j Roe, E.D. 1914AN....199..169R
Roe1914 AN 199, 169, 1914
Roe1915 Ma - Roe, E.D. 1915AN....202..99R
Roe1915 AN 202, 99, 1915
Roe1917 Ma j Roe, E.D. 1917AN....204...21R
Roe1917 AN 204, 21, 1917
Roe1918 Ma - Roe, E.D. 1918AJ.....31..149R
Roe1918 AJ 31, 149, 1918
Roe1919a Ma j Roe, E.D. 1919AJ.....32....6R
Roe1919a AJ 32, 6, 1919
Roe1919b Ma j Roe, E.D. 1919AJ.....32...25R
Roe1919b AJ 32, 25, 1919
Roe1932A - Roe, E.D. 1932QB821.A43......
Roe1932A cited in ADS (Aitken Double Star Cat.), 1932
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20277+4507 BKO 154 EK 2003 2 109 4.7 11.20 13.00 D 202734.68+450654.6
20277+4507 BKO 154 EK 2015 4 109 4.7 11.20 13.00 202734.68+450654.6

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

 
 
WDS 20277+4507 BKO 154 EK : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20277+4507 BKO 154 EK : MEASURES
 
 
No records found.

 
 
WDS 20277+4507 : VIRTUAL EYEPIECE
 
 

20277+4507 ROE 43A mag 9.38 Sp A2 20277+4507 ROE 43B sep 15.2 P.A. 326.30 mag 14.8 20277+4507 BKO 154C sep 52.8 P.A. 311.70 mag 13.4 20277+4507 ROE 43D sep 29.9 P.A. 271.80 mag 12.47 20277+4507 BKO 154E sep 82.8 P.A. 281.80 mag 11.2 20277+4507 ROE 43F sep 83.4 P.A. 342.50 mag 12.4 20277+4507 ROE 43G sep 73.8 P.A. 286.90 mag 12.85 20277+4507 BKO 154H sep 16.1 P.A. 214.00 mag 12.7 20277+4507 BKO 154I sep 18.7 P.A. 54.50 mag 14 20277+4507 BKO 154J sep 68.2 P.A. 318.10 mag 13.9 20277+4507 BKO 154K sep 79.4 P.A. 281.20 mag 13 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 20277+4507 : ALADIN DSS IMAGE @ 20h 27m 34.68s +45° 06' 54.6"
 
 
 
 
WDS 20277+4507 BKO 154 EK : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20277+4507 BKO 154EK distance=0' 20277+4507 BKO 154CJ distance=1' 20277+4507 ROE 43AB distance=2' 20277+4507 ROE 43AC distance=2' 20277+4507 ROE 43AD distance=2' 20277+4507 ROE 43AE distance=2' 20277+4507 ROE 43AF distance=2' 20277+4507 ROE 43AG distance=2' 20277+4507 BKO 154AH distance=2' 20277+4507 BKO 154AI distance=2' 20281+4509 TDS1075 distance=6' 20282+4458 ES 661 distance=11' 20264+4520 KPP 472 distance=18' 20293+4508 RAO 434 distance=19' 20295+4516 ES 662 distance=22' 20272+4437 BRT2264 distance=31' 20258+4533 TDT2263 distance=32' 20270+4539 HJ 1518 distance=33' 20295+4437 TDT2320 distance=37' 20246+4529 HJ 1514 distance=37' 20240+4457 ES 1331 distance=40' 20303+4439 ES 1441 distance=41' 20291+4544 BU 1135 distance=41' 20238+4525 ES 801 distance=44' 20305+4434 ES 1442 distance=46' 20237+4442 ES 1330 distance=48' 20300+4556 LSC 91 distance=56' 20317+4540 HJ 1533 distance=56' 20269+4611 BRT2263 distance=65' 20217+4522 BRT2261 distance=65' 20223+4546 POP 144 distance=69' 20343+4520 ES 804AB distance=73' 20303+4401 TDT2326 distance=73' 20343+4520 ES 804BC distance=73' 20338+4540 A 740 distance=74' 20328+4418 COU2645 distance=75' 20267+4353 FYM 258AB distance=75' 20267+4353 FYM 258AC distance=75' 20267+4353 FYM 258AD distance=75' 20314+4403 ES 1443 distance=76' 20253+4355 A 291AB distance=76' 20253+4355 A 291AC distance=76' 20210+4437 A 725 distance=77' 20266+4350 TDT2273 distance=79' 20231+4405 TDT2227 distance=79' 20348+4531 ES 805 distance=80' 20198+4522 STT 406 distance=84' 20231+4618 TDT2226 distance=85' 20225+4613 A 726 distance=86' 20194+4500 TDS1058 distance=87' 20302+4343 AG 407 distance=89' 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 20277+4507 BKO 154 EK 109 4.7
Show 20277+4507 BKO 154 CJ 331 17.9 1
Show 20277+4507 ROE 43 AB 317 17.4 2
Show 20277+4507 ROE 43 AC 312 52.6 2
Show 20277+4507 ROE 43 AD 271 42.4 2
Show 20277+4507 ROE 43 AE 282 82.9 2
Show 20277+4507 ROE 43 AF 336 87.1 2
Show 20277+4507 ROE 43 AG 282 102.4 2
Show 20277+4507 BKO 154 AH 224 18.4 2
Show 20277+4507 BKO 154 AI 63 24.2 2
Show 20281+4509 TDS1075 358 1.4 6
Show 20282+4458 ES 661 156 6.9 11
Show 20264+4520 KPP 472 88 4.6 18
Show 20293+4508 RAO 434 162 1.2 19
Show 20295+4516 ES 662 142 5.7 22
Show 20272+4437 BRT2264 4 3.0 31
Show 20258+4533 TDT2263 330 1.4 32
Show 20270+4539 HJ 1518 86 15.3 33
Show 20295+4437 TDT2320 223 0.7 37
Show 20246+4529 HJ 1514 215 11.3 37
Show 20240+4457 ES 1331 78 1.3 40
Show 20303+4439 ES 1441 127 2.0 41
Show 20291+4544 BU 1135 335 1.5 41
Show 20238+4525 ES 801 170 9.6 44
Show 20305+4434 ES 1442 265 2.7 46
Show 20237+4442 ES 1330 309 3.6 48
Show 20300+4556 LSC 91 19 0.3 56
Show 20317+4540 HJ 1533 187 10.9 56
Show 20269+4611 BRT2263 34 4.1 65
Show 20217+4522 BRT2261 272 4.5 65
Show 20223+4546 POP 144 121 6.0 69
Show 20343+4520 ES 804 AB 117 30.8 73
Show 20303+4401 TDT2326 100 0.7 73
Show 20343+4520 ES 804 BC 128 2.2 73
Show 20338+4540 A 740 313 0.8 74
Show 20328+4418 COU2645 290 0.1 75
Show 20267+4353 FYM 258 AB 345 17.2 75
Show 20267+4353 FYM 258 AC 244 37.4 75
Show 20267+4353 FYM 258 AD 100 24.8 75
Show 20314+4403 ES 1443 304 2.5 76
Show 20253+4355 A 291 AB 148 0.8 76
Show 20253+4355 A 291 AC 284 18.1 76
Show 20210+4437 A 725 25 0.9 77
Show 20266+4350 TDT2273 211 0.5 79
Show 20231+4405 TDT2227 172 0.5 79
Show 20348+4531 ES 805 152 7.9 80
Show 20198+4522 STT 406 100 0.3 84
Show 20231+4618 TDT2226 183 1.2 85
Show 20225+4613 A 726 276 0.5 86
Show 20194+4500 TDS1058 250 1.4 87
Show 20302+4343 AG 407 231 7.0 89

 
 
WDS 20277+4507 : COMPONENTS
 
 
  A B C D E F G H I J
B pa=326.3°
sep=15.18"
 
C pa=311.7°
sep=52.75"
pa=306.0°
sep=38.25"
 
D pa=271.8°
sep=29.91"
pa=241.5°
sep=24.43"
pa=164.5°
sep=35.43"
 
E pa=281.8°
sep=82.83"
pa=273.4°
sep=72.79"
pa=246.4°
sep=45.50"
pa=287.3°
sep=53.62"
 
F pa=342.5°
sep=83.38"
pa=346.0°
sep=68.94"
pa=17.8°
sep=46.65"
pa=3.5°
sep=78.70"
pa=41.8°
sep=83.99"
 
G pa=286.9°
sep=73.83"
pa=278.1°
sep=62.84"
pa=246.4°
sep=34.11"
pa=296.7°
sep=45.62"
pa=66.4°
sep=11.40"
pa=218.1°
sep=73.78"
 
H pa=214.0°
sep=16.07"
pa=181.2°
sep=25.95"
pa=147.9°
sep=57.17"
pa=124.3°
sep=25.32"
pa=112.7°
sep=78.18"
pa=170.2°
sep=94.23"
pa=119.4°
sep=70.79"
 
I pa=54.5°
sep=18.74"
pa=94.2°
sep=23.75"
pa=113.9°
sep=59.76"
pa=77.6°
sep=46.23"
pa=93.6°
sep=96.53"
pa=149.6°
sep=79.62"
pa=97.0°
sep=86.55"
pa=45.1°
sep=34.25"
 
J pa=318.1°
sep=68.18"
pa=315.8°
sep=53.20"
pa=338.6°
sep=16.81"
pa=342.6°
sep=52.19"
pa=46.4°
sep=49.09"
pa=215.4°
sep=35.28"
pa=40.6°
sep=38.58"
pa=330.3°
sep=73.76"
pa=303.3°
sep=72.69"
 
K pa=281.2°
sep=79.43"
pa=272.3°
sep=69.56"
pa=242.9°
sep=43.29"
pa=286.7°
sep=50.16"
pa=115.5°
sep=3.50"
pa=219.5°
sep=83.07"
pa=230.2°
sep=9.48"
pa=292.6°
sep=74.69"
pa=272.8°
sep=93.29"
pa=222.5°
sep=47.95"
 
 
20277+4507 A
 
 
Coord arcsec 2000 202742.34+450637.7 Mag 9.38 Spectral class A2 (white) PmRA -9.00
PmDE -7.0 Tycho2 3573-00540-1
Tycho2
Tycho2 3573-00540-1 Pflag RAmdeg 306.92643287 DEmdeg 45.11048259
PmRA -6.9 PmDE -10.5 E RAmdeg 10 E DEmdeg 10
E pmRA 1.0 E pmDE 1.0 EpRAm 1990.29 EpDEm 1990.35
Num 7 Q RAmdeg 0.6 Q DEmdeg 0.8 Q pmRA 0.6
Q pmDE 0.9 BTmag 9.636 E BTmag 0.020 VTmag 9.381
E VTmag 0.017 Prox 830 TYC T HIP
CCDM RAdeg 306.92645611 DEdeg 45.11050722 EpRA 1990 1.69
EpDE 1990 1.76 E RAdeg 9.8 E DEdeg 9.6 Posflg
Corr 0.0
 
 
20277+4507 B
 
 
Coord arcsec 2000 202741.54+450650.3 Mag 14.8 PmRA -9.00 PmDE -2.0
Calc delta mag 5.42 Calc coord yes
 
 
20277+4507 C
 
 
Coord arcsec 2000 202738.62+450712.8 Coord calc 202738.62+450712.8 Mag 13.4 PmRA 2.00
PmDE -1.0 Calc delta mag 4.02
 
 
20277+4507 D
 
 
Coord arcsec 2000 202739.52+450638.7 Mag 12.47 PmRA -8.00 PmDE 0.0
Calc delta mag 3.09 Calc coord yes
 
 
20277+4507 E
 
 
Coord arcsec 2000 202734.68+450654.6 Coord calc 202734.68+450654.6 Mag 11.2 PmRA -4.00
PmDE 3.0 Tycho2 3573-00591-1 Calc delta mag 1.82
Tycho2
Tycho2 3573-00591-1 Pflag RAmdeg 306.89449370 DEmdeg 45.11515743
PmRA -3.5 PmDE 3.3 E RAmdeg 28 E DEmdeg 27
E pmRA 1.5 E pmDE 1.5 EpRAm 1985.42 EpDEm 1985.57
Num 4 Q RAmdeg 5.1 Q DEmdeg 1.7 Q pmRA 5.2
Q pmDE 1.6 BTmag 11.237 E BTmag 0.051 VTmag 11.185
E VTmag 0.073 Prox 195 TYC T HIP
CCDM RAdeg 306.89444417 DEdeg 45.11515750 EpRA 1990 1.68
EpDE 1990 1.76 E RAdeg 36.7 E DEdeg 34.5 Posflg
Corr -0.1
 
 
20277+4507 F
 
 
Coord arcsec 2000 202739.97+450757.2 Mag 12.4 PmRA 7.00 PmDE 4.0
Tycho2 3573-00486-1 Calc delta mag 3.02 Calc coord yes
Tycho2
Tycho2 3573-00486-1 Pflag RAmdeg 306.91241569 DEmdeg 45.13250518
PmRA 9.8 PmDE 2.1 E RAmdeg 82 E DEmdeg 77
E pmRA 1.8 E pmDE 1.7 EpRAm 1960.47 EpDEm 1959.23
Num 4 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 0.9 BTmag 13.008 E BTmag 0.249 VTmag 12.397
E VTmag 0.191 Prox 773 TYC HIP
CCDM RAdeg 306.91238306 DEdeg 45.13250028 EpRA 1990 1.66
EpDE 1990 1.80 E RAdeg 99.2 E DEdeg 94.4 Posflg
Corr 0.0
 
 
20277+4507 G
 
 
Coord arcsec 2000 202735.67+450659.2 Mag 12.85 PmRA -7.00 PmDE -5.0
Calc delta mag 3.47 Calc coord yes
 
 
20277+4507 H
 
 
Coord arcsec 2000 202741.49+450624.4 Mag 12.7 PmRA -32.00 PmDE -18.0
Calc delta mag 3.32 Calc coord yes
 
 
20277+4507 I
 
 
Coord arcsec 2000 202743.78+450648.6 Mag 14 Calc delta mag 4.62 Calc coord yes
 
 
20277+4507 J
 
 
Coord arcsec 2000 202738.04+450728.5 Mag 13.9 PmRA -65.00 PmDE 10.0
Calc delta mag 4.52 Calc coord yes
 
 
20277+4507 K
 
 
Coord arcsec 2000 202734.98+450653.1 Mag 13 Calc delta mag 3.62 Calc coord yes