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Current system
20545+3937
BRT 2281


Nearby doubles
7' : 20549+3933
BKO 471

8' : 20547+3929
GRV 395

8' : 20544+3929
BKO 469

9' : 20551+3941
MLB 886

11' : 20550+3929
SEI1311

13' : 20553+3944
SEI1315

13' : 20555+3932
BKO 472

14' : 20555+3940
MLB 783

17' : 20531+3940
SEI1292

21' : 20558+3951
LDS2469

23' : 20559+3922
MLB 957

23' : 20546+3914
MLB 780AB

23' : 20550+3914
ES 1983

24' : 20528+3925
SEI1290

24' : 20552+3915
MLB 782AB

24' : 20559+3921
MLB 958

24' : 20549+3913
MLB 781

25' : 20566+3932
SEI1325

28' : 20556+3912
SEI1319

29' : 20554+3910
ES 1984

29' : 20556+3911
MLB 784

30' : 20555+3909
MLB 887

31' : 20556+4004
TDT2634

32' : 20577+3943
COU2429

32' : 20554+3907
TDT2629

33' : 20569+3922
SEI1326



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.

20545+3937 BRT 2281

 
 
20h 54m 27.32s +39° 36' 34.9" P.A. 73.00 sep 3.6 mag 10.50,11.20
 
 
Coord 2000 20545+3937 Discov num BRT2281 Comp Coord arcsec 2000 20 54 27.32 +39 36 34.9
Date first 1892 Date last 2016 Obs 8
Pa first 71 Pa last 73.1 P.A. Now (θ) 73.1°
Sep first 3.4 Sep last 3.595 Sep. Now (ρ) 3.595"
Mag pri 10.50 Mag sec 11.20 delta mag (ΔM) 0.7 Spectral class
Pri motion ra -074 Sec motion ra -003
Pri motion dec -048 Sec motion dec -025
Notes
rPM=0.846
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 1872901200454793472
 
 
WDS 20545+3937 BRT 2281 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Brt1926a Pa - Barton, S.G. 1926AJ.....36..155B
Brt1926a AJ 36, 155, 1926 (BRT 1 - BRT 62)
Brt1926b Pa j Barton, S.G. 1926AJ.....37...57B
Brt1926b AJ 37, 57, 1926 (BRT 63 - BRT 116)
Brt1928 Pa - Barton, S.G. 1928AJ.....38..168B
Brt1928 AJ 38, 168, 1928 (BRT 117 - BRT 230)
Brt1929a Pa - Barton, S.G. 1929AN....235..425B
Brt1929a AN 235, 425, 1929 (BRT 294 - BRT 322)
Brt1929b Pa - Barton, S.G. 1929AJ.....39...93B
Brt1929b AJ 39, 93, 1929 (BRT 231 - BRT 293)
Brt1929c Ma j Barton, S.G. 1929AJ.....39..120B
Brt1929c AJ 39, 120, 1929
Brt1930 Pa - Barton, S.G. 1930AJ.....40..181B
Brt1930 AJ 40, 181, 1930 (BRT 323 - BRT 348)
Brt1931 Pa - Barton, S.G. (BRT 349 - BRT 562) 1931AJ.....41...35B
Brt1931 AJ 41, 35, 1931 (no measures for BRT 529 - BRT 562)
Brt1932a Pa - Barton, S.G. 1932AJ.....42...93B
Brt1932a AJ 42, 93, 1932 (BRT 604 - BRT 636)
Brt1932b Ma - Barton, S.G. 1932PFAO....5a...1B
Brt1932b +Pa Pub. Univ. Penn. 5, Pt.1, Sec.2, 1932 (BRT 563 - BRT 603, BRT1928, etc.)
Brt1932C Ma - Barton, S.G. 1932QB821.A43......
Brt1932C cited in ADS (Aitken Double Star Cat.), 1932
Brt1933 Pa - Barton, S.G. 1933AN....250...49B
Brt1933 AN 250, 49, 1933
Brt1933 (BRT 637 - BRT1134; very approximate dates added for pairs listed with only
Brt1933 secondary magnitudes and no astrometry)
Brt1934 Pa - Barton, S.G. 1934AJ.....43..119B
Brt1934 +Ma AJ 43, 119, 1934
Brt1935a Pa - Barton, S.G. 1935AJ.....44..105B
Brt1935a +Ma AJ 44, 105, 1935
Brt1935b Pa - Barton, S.G. 1935AN....256..357B
Brt1935b AN 256, 357, 1935
Brt1936a Ma - Barton, S.G. 1936AJ.....45...33B
Brt1936a +Pa AJ 45, 33, 1936
Brt1936b Pa - Barton, S.G. 1936AJ.....45...99B
Brt1936b +Ma AJ 45, 99, 1936
Brt1937a Pa - Barton, S.G. 1937AN....263..347B
Brt1937a AN 263, 347, 1937
Brt1937b Pa - Barton, S.G. 1937AN....263..383B
Brt1937b AN 263, 383, 1937
Brt1938 Ma - Barton, S.G. 1938AJ.....47..133B
Brt1938 +Pa AJ 47, 133, 1938
Brt1939a Ma - Barton, S.G. 1939PFAO....5b...1B
Brt1939a +Pa Pub. Univ. Penn. 5, Pt.2, Sec.2, 1939
Brt1939b Pa - Barton, S.G. 1939AJ.....48..145B
Brt1939b +Ma AJ 48, 145, 1939
Brt1941 Pa - Barton, S.G. 1941PASP...55..339B
Brt1941 PASP 55, 339, 1941
Brt1942 Pa - Barton, S.G. 1942AJ.....50...11B
Brt1942 AJ 50, 11, 1942
Brt1947 Ma - Barton, S.G. 1947AJ.....52..178B
Brt1947 +Pa AJ 52, 178, 1947
Brt1949 Ma - Barton, S.G. 1949PFAO....7a...1B
Brt1949 Pub. Univ. Penn. 7, Pt.1, Sec.1, 1949
Brt1951 Pa - Barton, S.G. 1951AJ.....55..218B
Brt1951 AJ 55, 218, 1951
Brt1957 Ma - Barton, S.G. 1957QB4.P5v7ps3....
Brt1957 Pub. Univ. Penn. 7, Pt.3, 15, 1957
Brt9999 Ma - Barton, S.G. ...................
Brt9999 +Pa Unpublished, manuscript or reference not found.
Brt2002A Ma - Barton, S.G. 2002yCat.1275....0D
Brt2002A +Pa cited in CCDM
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20545+3937 BRT2281 2002 4 74 3.6 10.50 11.20 D 205427.32+393634.9
20545+3937 BRT2281 2008 5 73 3.4 10.50 11.20 D 205427.32+393634.9
20545+3937 BRT2281 2015 7 73 3.6 10.50 11.20 205427.32+393634.9
20545+3937 BRT2281 2016 8 73 3.6 10.50 11.20 205427.32+393634.9

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

 
 
WDS 20545+3937 BRT 2281 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20545+3937 BRT 2281 : MEASURES
 
 
No records found.

 
 
WDS 20545+3937 : VIRTUAL EYEPIECE
 
 

20545+3937 BRT2281A mag 10.5 20545+3937 BRT2281B sep 2.9 P.A. 68.50 mag 11.2 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 20545+3937 : ALADIN DSS IMAGE @ 20h 54m 27.32s +39° 36' 34.9"
 
 
 
 
WDS 20545+3937 BRT 2281 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20545+3937 BRT2281 distance=0' 20549+3933 BKO 471 distance=7' 20547+3929 GRV 395 distance=8' 20544+3929 BKO 469 distance=8' 20551+3941 MLB 886 distance=9' 20550+3929 SEI1311 distance=11' 20553+3944 SEI1315 distance=13' 20555+3932 BKO 472 distance=13' 20555+3940 MLB 783 distance=14' 20531+3940 SEI1292 distance=17' 20558+3951 LDS2469 distance=21' 20559+3922 MLB 957 distance=23' 20546+3914 BKO 470BC distance=23' 20546+3914 MLB 780AB distance=23' 20550+3914 ES 1983 distance=23' 20528+3925 SEI1290 distance=24' 20552+3915 MLB 782AB distance=24' 20552+3915 SEI1313AC distance=24' 20559+3921 MLB 958 distance=24' 20549+3913 MLB 781 distance=24' 20566+3932 SEI1325 distance=25' 20556+3912 SEI1319 distance=28' 20554+3910 ES 1984 distance=29' 20556+3911 MLB 784 distance=29' 20555+3909 MLB 887 distance=30' 20556+4004 TDT2634 distance=31' 20577+3943 COU2429 distance=32' 20554+3907 TDT2629 distance=32' 20569+3922 SEI1326 distance=33' 20571+3920 BKO 473 distance=35' 20558+3905 MLB 956 distance=36' 20515+3944 DAM 317AB distance=36' 20515+3944 DAM 317AC distance=36' 20572+3920 BKO 474 distance=36' 20514+3945 MLB 779AB distance=37' 20514+3945 DAM 316AC distance=37' 20514+3945 DAM 316AD distance=37' 20546+3900 SEI1308 distance=37' 20514+3927 TDT2581 distance=38' 20556+3901 HJ 1596 distance=38' 20577+3926 SEI1334 distance=40' 20519+3911 SEI1283 distance=40' 20578+3923 BKO 475 distance=42' 20562+3900 ES 2055 distance=42' 20520+4009 MLB 955 distance=42' 20556+3856 MLB 785 distance=43' 20510+3915 SEI1279BC distance=46' 20510+3915 SEI1279AB distance=46' 20580+3918 BKO 476BD distance=46' 20580+3918 ES 1985AB distance=46' 20580+3918 SEI1338AC distance=46' 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 20545+3937 BRT2281 73 3.6
Show 20549+3933 BKO 471 171 5.5 7
Show 20547+3929 GRV 395 211 59.7 8
Show 20544+3929 BKO 469 328 4.7 8
Show 20551+3941 MLB 886 141 7.0 9
Show 20550+3929 SEI1311 247 8.8 11
Show 20553+3944 SEI1315 281 29.0 13
Show 20555+3932 BKO 472 67 5.7 13
Show 20555+3940 MLB 783 288 5.6 14
Show 20531+3940 SEI1292 205 24.8 17
Show 20558+3951 LDS2469 2 3.3 21
Show 20559+3922 MLB 957 134 2.8 23
Show 20546+3914 BKO 470 BC 280 2.9 23
Show 20546+3914 MLB 780 AB 64 9.6 23
Show 20550+3914 ES 1983 266 6.1 23
Show 20528+3925 SEI1290 222 14.2 24
Show 20552+3915 MLB 782 AB 344 10.3 24
Show 20552+3915 SEI1313 AC 260 26.9 24
Show 20559+3921 MLB 958 169 5.3 24
Show 20549+3913 MLB 781 296 8.6 24
Show 20566+3932 SEI1325 140 27.8 25
Show 20556+3912 SEI1319 70 32.1 28
Show 20554+3910 ES 1984 115 3.5 29
Show 20556+3911 MLB 784 25 4.6 29
Show 20555+3909 MLB 887 246 10.4 30
Show 20556+4004 TDT2634 54 1.9 31
Show 20577+3943 COU2429 209 0.8 32
Show 20554+3907 TDT2629 163 2.5 32
Show 20569+3922 SEI1326 14 26.6 33
Show 20571+3920 BKO 473 34 5.4 35
Show 20558+3905 MLB 956 115 5.0 36
Show 20515+3944 DAM 317 AB 95 14.8 36
Show 20515+3944 DAM 317 AC 357 15.2 36
Show 20572+3920 BKO 474 24 3.3 36
Show 20514+3945 MLB 779 AB 124 9.0 37
Show 20514+3945 DAM 316 AC 79 6.3 37
Show 20514+3945 DAM 316 AD 304 13.8 37
Show 20546+3900 SEI1308 93 6.0 37
Show 20514+3927 TDT2581 146 0.8 38
Show 20556+3901 HJ 1596 295 18.2 38
Show 20577+3926 SEI1334 106 16.9 40
Show 20519+3911 SEI1283 1 22.8 40
Show 20578+3923 BKO 475 265 5.5 42
Show 20562+3900 ES 2055 293 7.6 42
Show 20520+4009 MLB 955 27 6.6 42
Show 20556+3856 MLB 785 5 6.4 43
Show 20510+3915 SEI1279 BC 189 7.3 46
Show 20510+3915 SEI1279 AB 147 12.9 46
Show 20580+3918 BKO 476 BD 246 6.0 46
Show 20580+3918 ES 1985 AB 276 8.4 46
Show 20580+3918 SEI1338 AC 277 32.7 46

 
 
WDS 20545+3937 : COMPONENTS
 
 
  A
B pa=68.5°
sep=2.85"
 
 
20545+3937 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 205427.32+393634.9 Mag 10.5 PmRA -74.00
PmDE -48.0
 
 
20545+3937 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205427.55+393635.9 Mag 11.2 PmRA -3.00
PmDE -25.0 Calc delta mag 0.7 Calc coord yes