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Doubles in session


Current system
20450+4718
BRT 2274


Nearby doubles
7' : 20443+4716
TDT2509

17' : 20434+4712
TDT2496

20' : 20437+4733
A 749

30' : 20437+4651
TDS1096

38' : 20481+4738
TDT2547

41' : 20482+4653
ES 669

44' : 20478+4750
ES 810

45' : 20431+4637
BRT2273

46' : 20478+4754
ES 2253

49' : 20466+4632
KUI 101

54' : 20397+4721
A 748

55' : 20502+4732
ES 672

56' : 20414+4758
ES 809AB

56' : 20427+4627
TDS1092

57' : 20397+4734
A 747AB

57' : 20456+4621
HDS2955

59' : 20454+4816
UC 254

60' : 20437+4619
HO 140

63' : 20499+4640
BU 250

66' : 20389+4741
A 746

67' : 20496+4805
HJ 1584

68' : 20501+4635
ES 671

69' : 20438+4610
TDT2503

69' : 20517+4721
TDT2584

73' : 20379+4710
TDT2436

77' : 20508+4628
BRT2276AB



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.

20450+4718 BRT 2274

 
 
20h 44m 59.81s +47° 17' 35.1" P.A. 41.00 sep 4.9 mag 11.60,11.60
 
 
Coord 2000 20450+4718 Discov num BRT2274 Comp Coord arcsec 2000 20 44 59.81 +47 17 35.1
Date first 1892 Date last 2015 Obs 7
Pa first 46 Pa last 40.9 P.A. Now (θ) 40.9°
Sep first 3.2 Sep last 4.854 Sep. Now (ρ) 4.854"
Mag pri 11.60 Mag sec 11.60 delta mag (ΔM) 0 Spectral class
Pri motion ra -013 Sec motion ra +040
Pri motion dec -012 Sec motion dec +003
Notes
rPM=1.373
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3578-00040-1 Gaia DR2 2166743350821953664
 
 
WDS 20450+4718 BRT 2274 : 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
20450+4718 BRT2274 2003 5 41 4.8 9.40 9.80 D 204459.81+471735.1
20450+4718 BRT2274 2015 7 41 4.9 11.60 11.60 204459.81+471735.1

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

 
 
WDS 20450+4718 BRT 2274 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20450+4718 BRT 2274 : MEASURES
 
 
No records found.

 
 
WDS 20450+4718 : VIRTUAL EYEPIECE
 
 

20450+4718 BRT2274A mag 11.6 20450+4718 BRT2274B sep 4.3 P.A. 30.40 mag 11.6 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 20450+4718 : ALADIN DSS IMAGE @ 20h 44m 59.81s +47° 17' 35.1"
 
 
 
 
WDS 20450+4718 BRT 2274 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20450+4718 BRT2274 distance=1' 20443+4716 TDT2509 distance=7' 20434+4712 TDT2496 distance=17' 20437+4733 A 749 distance=20' 20437+4651 TDS1096 distance=30' 20481+4738 TDT2547 distance=38' 20482+4653 ES 669 distance=41' 20478+4750 ES 810 distance=44' 20431+4637 BRT2273 distance=45' 20478+4754 ES 2253 distance=46' 20466+4632 KUI 101 distance=49' 20397+4721 A 748 distance=54' 20502+4732 ES 672 distance=55' 20414+4758 ES 809AB distance=56' 20414+4758 SKF2394AC distance=56' 20427+4627 TDS1092 distance=56' 20397+4734 A 747AB distance=57' 20397+4734 ES 90AB,C distance=57' 20456+4621 HDS2955 distance=57' 20454+4816 UC 254 distance=59' 20437+4619 HO 140 distance=60' 20499+4640 BU 250 distance=63' 20389+4741 A 746 distance=66' 20496+4805 HJ 1584 distance=67' 20501+4635 ES 671 distance=68' 20438+4610 TDT2503 distance=69' 20517+4721 TDT2584 distance=69' 20379+4710 TDT2436 distance=73' 20508+4628 BRT2276AB distance=77' 20508+4628 FYM 314AC distance=77' 20508+4628 FYM 314AD distance=77' 20389+4803 CNT 7 distance=77' 20522+4653 BRT2278 distance=78' 20397+4806 ES 806AB distance=78' 20397+4806 ES 806AC distance=78' 20388+4629 BRT2268 distance=80' 20494+4613 ES 670 distance=80' 20409+4828 ES 808 distance=82' 20489+4607 HJ 1581 distance=82' 20379+4757 HDS2944Ca,Cb distance=82' 20379+4757 GUI 33BC distance=83' 20379+4757 STF2707AB distance=83' 20379+4757 STF2707AC distance=83' 20379+4757 ES 2697AD distance=83' 20383+4804 ES 89AB distance=83' 20396+4823 RAO 616 distance=85' 20464+4551 CVR 230 distance=88' 20423+4549 WAL 132BC distance=92' 20423+4549 CTT 15BD distance=92' 20423+4549 CTT 15BE distance=92' 20423+4549 STT 411AB distance=93' 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 20450+4718 BRT2274 41 4.9 1
Show 20443+4716 TDT2509 180 1.4 7
Show 20434+4712 TDT2496 49 1.7 17
Show 20437+4733 A 749 306 0.5 20
Show 20437+4651 TDS1096 147 0.9 30
Show 20481+4738 TDT2547 73 2.5 38
Show 20482+4653 ES 669 28 6.8 41
Show 20478+4750 ES 810 40 20.7 44
Show 20431+4637 BRT2273 308 4.7 45
Show 20478+4754 ES 2253 335 3.4 46
Show 20466+4632 KUI 101 112 0.3 49
Show 20397+4721 A 748 27 1.4 54
Show 20502+4732 ES 672 166 4.6 55
Show 20414+4758 ES 809 AB 285 1.6 56
Show 20414+4758 SKF2394 AC 68 3.0 56
Show 20427+4627 TDS1092 315 0.9 56
Show 20397+4734 A 747 AB 104 0.3 57
Show 20397+4734 ES 90 AB,C 141 7.1 57
Show 20456+4621 HDS2955 289 0.4 57
Show 20454+4816 UC 254 181 17.9 59
Show 20437+4619 HO 140 313 8.0 60
Show 20499+4640 BU 250 7 18.3 63
Show 20389+4741 A 746 150 2.0 66
Show 20496+4805 HJ 1584 223 4.3 67
Show 20501+4635 ES 671 91 1.6 68
Show 20438+4610 TDT2503 68 0.5 69
Show 20517+4721 TDT2584 177 2.4 69
Show 20379+4710 TDT2436 82 0.6 73
Show 20508+4628 BRT2276 AB 254 3.7 77
Show 20508+4628 FYM 314 AC 149 9.5 77
Show 20508+4628 FYM 314 AD 86 11.2 77
Show 20389+4803 CNT 7 82 3.5 77
Show 20522+4653 BRT2278 196 3.2 78
Show 20397+4806 ES 806 AB 267 7.0 78
Show 20397+4806 ES 806 AC 24 11.9 78
Show 20388+4629 BRT2268 320 3.4 80
Show 20494+4613 ES 670 81 6.5 80
Show 20409+4828 ES 808 157 3.3 82
Show 20489+4607 HJ 1581 170 22.4 82
Show 20379+4757 HDS2944 Ca,Cb 29 0.4 82
Show 20379+4757 GUI 33 BC 199 76.6 83
Show 20379+4757 STF2707 AB 29 21.8 83
Show 20379+4757 STF2707 AC 195 55.3 83
Show 20379+4757 ES 2697 AD 192 17.5 83
Show 20383+4804 ES 89 AB 209 21.5 83
Show 20396+4823 RAO 616 122 1.8 85
Show 20464+4551 CVR 230 7 112.9 88
Show 20423+4549 WAL 132 BC 4 40.1 92
Show 20423+4549 CTT 15 BD 178 86.6 92
Show 20423+4549 CTT 15 BE 141 87.9 92
Show 20423+4549 STT 411 AB 349 31.8 93

 
 
WDS 20450+4718 : COMPONENTS
 
 
  A
B pa=30.4°
sep=4.26"
 
 
20450+4718 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204459.81+471735.1 Mag 11.6 PmRA -13.00
PmDE -12.0 Tycho2 3578-00040-1
Tycho2
Tycho2 3578-00040-1 Pflag RAmdeg 311.24921504 DEmdeg 47.29307385
PmRA -3.3 PmDE -4.9 E RAmdeg 55 E DEmdeg 57
E pmRA 1.7 E pmDE 1.6 EpRAm 1978.78 EpDEm 1976.28
Num 4 Q RAmdeg 0.4 Q DEmdeg 2.0 Q pmRA 0.4
Q pmDE 2.0 BTmag 11.695 E BTmag 0.076 VTmag 11.871
E VTmag 0.169 Prox 999 TYC HIP
CCDM RAdeg 311.24922639 DEdeg 47.29308472 EpRA 1990 1.62
EpDE 1990 1.70 E RAdeg 58.8 E DEdeg 62.0 Posflg
Corr 0.1
 
 
20450+4718 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204500.02+471738.8 Mag 11.6 PmRA 40.00
PmDE 3.0 Calc coord yes