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Doubles in session


Current system
20474+5407
ES 997


Nearby doubles
19' : 20455+5401
HLD 41AB

33' : 20448+5430
TOI1356

37' : 20515+5403
ARG 41AB

40' : 20518+5357
TDT2586

40' : 20509+5342
TDT2576

53' : 20506+5452
HJ 1587AB

55' : 20421+5436
ES 994

58' : 20443+5457
TDT2508

64' : 20403+5413
OSO 129AB

67' : 20402+5427
A 1682

71' : 20414+5454
TDS1090

74' : 20558+5417
CBL 89

79' : 20444+5253
MLR 643

80' : 20411+5504
TDS1089

81' : 20460+5247
ES 996

82' : 20396+5450
ES 993

83' : 20433+5521
LLO 1

85' : 20408+5307
ES 2698AB

86' : 20388+5447
STI2550

88' : 20377+5351
A 1681AB

90' : 20376+5429
KPP2376

91' : 20385+5453
STI2548

93' : 20375+5437
STI2546

94' : 20369+5429
STI2545

94' : 20400+5515
HJ 1562AB

96' : 20419+5529
TDT2477



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.

20474+5407 ES 997

 
 
20h 47m 25.37s +54° 06' 48.2" P.A. 274.00 sep 3.3 mag 10.87,13.20 Sp B8
 
 
Coord 2000 20474+5407 Discov num ES  997 Comp Coord arcsec 2000 20 47 25.37 +54 06 48.2
Date first 1910 Date last 2015 Obs 4
Pa first 271 Pa last 273.6 P.A. Now (θ) 273.6°
Sep first 2.8 Sep last 3.281 Sep. Now (ρ) 3.281"
Mag pri 10.87 Mag sec 13.20 delta mag (ΔM) 2.33 Spectral class B8 (blue-white)
Pri motion ra +002 Sec motion ra
Pri motion dec -007 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3951-00905-1 Gaia DR2 2182911428782670976 ADS 14305
 
 
WDS 20474+5407 ES 997 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Es_1901 Mb - Espin, T.E. 1901AN....155..321E
Es_1901 AN 155, 321, 1901 (ES 1 - 39)
Es_1902a Ma - Espin, T.E. 1902AN....158..241E
Es_1902a +Mb AN 158, 241, 1902 (ES 40 - 112)
Es_1902b Mb - Espin, T.E. 1902MNRAS..62..528E
Es_1902b MNRAS 62, 528, 1902
Es_1902c Mb j Espin, T.E. 1902MNRAS..62..402E
Es_1902c MNRAS 62, 402, 1902
Es_1903 Mb - Espin, T.E. 1903MNRAS..63..172E
Es_1903 MNRAS 63, 172, 1903 (ES 113 - 150)
Es_1904a - Espin, T.E. 1904MNRAS..64..238E
Es_1904a MNRAS 64, 238, 1904 (data superceded by MNRAS 65, 710, 1905) 1905MNRAS..65..710E
Es_1904b Mb - Espin, T.E. 1904MNRAS..64..675E
Es_1904b MNRAS 64, 675, 1904
Es_1905 Mb - Espin, T.E. 1905MNRAS..65..710E
Es_1905 MNRAS 65, 710, 1905 (ES 151 - 221)
Es_1906a Mb - Espin, T.E. 1906MNRAS..66..141E
Es_1906a MNRAS 66, 141, 1906 (ES 222 - 269)
Es_1906b Mb - Espin, T.E. 1906MNRAS..66..430E
Es_1906b MNRAS 66, 430, 1906 (ES 270 - 311)
Es_1906C Mb - Espin, T.E. 1906QB821.B972.....
Es_1906C cited in BDS (Burnham Double Star Cat.), 1906
Es_1906D Mb - Espin, T.E. 1906MmRAS..56....1L
Es_1906D cited by Lewis (MemRAS 56, 1, 1906)
Es_1907a Mb j Espin, T.E. 1907MNRAS..67..190E
Es_1907a MNRAS 67, 190, 1907 (ES 312 - 403)
Es_1907b Mb - Espin, T.E. 1907MNRAS..67..495E
Es_1907b MNRAS 67, 495, 1907 (ES 404 - 442)
Es_1908a Mb j Espin, T.E. 1908MNRAS..68..202E
Es_1908a MNRAS 68, 202, 1908 (ES 443 - 551)
Es_1908b Mb - Espin, T.E. 1908MNRAS..68..523E
Es_1908b MNRAS 68, 523, 1908 (ES 552 - 609)
Es_1908c - Espin, T.E. 1908JRASC...2..248E
Es_1908c JRASC 2, 248, 1908 (data also in MNRAS 69, 218, 1909) 1909MNRAS..69..218E
Es_1909a Mb j Espin, T.E. 1909MNRAS..69..218E
Es_1909a MNRAS 69, 218, 1909 (ES 610 - 704)
Es_1909b Mb j Espin, T.E. 1909MNRAS..69..604E
Es_1909b MNRAS 69, 604, 1909 (ES 705 - 743)
Es_1910a Mb - Espin, T.E. 1910MNRAS..70..237E
Es_1910a MNRAS 70, 237, 1910 (ES 744 - 864)
Es_1910b Mb - Espin, T.E. 1910MNRAS..70..541E
Es_1910b MNRAS 70, 541, 1910 (ES 865 - 927)
Es_1911 Mb - Espin, T.E. 1911MNRAS..71..217E
Es_1911 MNRAS 71, 217, 1911 (ES 928 - 1051)
Es_1912 Mb - Espin, T.E. 1912MNRAS..72..191E
Es_1912 MNRAS 72, 191, 1912 (ES 1052 - 1125)
Es_1913 Mb j Espin, T.E. 1913MNRAS..73..162E
Es_1913 MNRAS 73, 162, 1913 (ES 1126 - 1191)
Es_1914 Mb j Espin, T.E. 1914MNRAS..74..244E
Es_1914 MNRAS 74, 244, 1914 (ES 1192 - 1293)
Es_1915a Mb - Espin, T.E. 1915MNRAS..75..203E
Es_1915a MNRAS 75, 203, 1915 (ES 1294 - 1356)
Es_1915b Mb - Espin, T.E. 1915MNRAS..75..555E
Es_1915b MNRAS 75, 555, 1915 (ES 1357 - 1405)
Es_1915c Mb - Espin, T.E. 1915MNRAS..76..210E
Es_1915c MNRAS 76, 210, 1915 (ES 1406 - 1479)
Es_1917 Mb - Espin, T.E. 1917MNRAS..77..236E
Es_1917 MNRAS 77, 236, 1917 (ES 1480 - 1600)
Es_1918 Mb j Espin, T.E. 1918MNRAS..78..189E
Es_1918 MNRAS 78, 189, 1918 (ES 1601 - 1705, MLB 1 - 35)
Es_1919 Mb - Espin, T.E. 1919MNRAS..79..211E
Es_1919 MNRAS 79, 211, 1919 (ES 1706 - 1768, MLB 36 - 106)
Es_1920 Mb - Espin, T.E. 1920MNRAS..80..329E
Es_1920 MNRAS 80, 329, 1920 (ES 1769 - 1805, MLB 107 - 149)
Es_1921 Mb j Espin, T.E. 1921MNRAS..81..232E
Es_1921 MNRAS 81, 232, 1921 (ES 1806 - 1864, MLB 150 - 182)
Es_1922 Mb - Espin, T.E. 1922MNRAS..82..187E
Es_1922 MNRAS 82, 187, 1922 (ES 1865 - 1933, MLB 183 - 241)
Es_1923 Mb - Espin, T.E. 1923MNRAS..83..154E
Es_1923 MNRAS 83, 154, 1923 (ES 1934 - 2006, MLB 242 - 275)
Es_1924 Mb - Espin, T.E. 1924MNRAS..84..162E
Es_1924 MNRAS 84, 162, 1924 (ES 2007 - 2078, MLB 276 - 322)
Es_1925a Mb - Espin, T.E. 1925MNRAS..85..276E
Es_1925a MNRAS 85, 276, 1925 (ES 2079 - 2137, MLB 323 - 376)
Es_1925b Mb - Espin, T.E. 1925MNRAS..86...79E
Es_1925b MNRAS 86, 79, 1925
Es_1926 Mb - Espin, T.E. 1926MNRAS..86..131E
Es_1926 MNRAS 86, 131, 1926 (ES 2138 - 2209, MLB 377 - 440)
Es_1927 Mb - Espin, T.E. 1927MNRAS..87..215E
Es_1927 MNRAS 87, 215, 1927 (ES 2210 - 2273, MLB 441 - 510)
Es_1928 Mb - Espin, T.E. 1928MNRAS..88..185E
Es_1928 MNRAS 88, 185, 1928 (ES 2274 - 2328, MLB 511 - 551)
Es_1929 Mb - Espin, T.E. 1929MNRAS..89..268E
Es_1929 MNRAS 89, 268, 1929 (ES 2329 - 2362, MLB 552 - 591)
Es_1930 Mb - Espin, T.E. 1930MNRAS..90..317E
Es_1930 MNRAS 90, 317, 1930 (ES 2363 - 2400, MLB 592 - 630)
Es_1931 Mb - Espin, T.E. 1931MNRAS..91..294E
Es_1931 MNRAS 91, 294, 1931 (ES 2401 - 2444, MLB 631 - 673)
Es_1932a Mb - Espin, T.E. 1932MNRAS..92..214E
Es_1932a MNRAS 92, 214, 1932 (ES 2445 - 2543, MLB 674 - 732)
Es_1932B Mb - Espin, T.E. 1932QB821.A43......
Es_1932B cited in ADS (Aitken Double Star Cat.), 1932
Es_1933 Mb - Espin, T.E. 1933MNRAS..93..192E
Es_1933 MNRAS 93, 192, 1933 (ES 2544 - 2575, MLB 733 - 806)
Es_1937A Mb - Espin, T.E. 1937AnLei..18....1S
Es_1937A cited by Strand (Ann. Sterrew. Leiden 18, 1937)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20474+5407 ES 997 2007 2 273 3.3 10.87 13.20 204725.37+540648.2
20474+5407 ES 997 2015 4 274 3.3 10.87 13.20 B8 204725.37+540648.2

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

 
 
WDS 20474+5407 ES 997 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20474+5407 ES 997 : MEASURES
 
 
No records found.

 
 
WDS 20474+5407 : VIRTUAL EYEPIECE
 
 

20474+5407 ES 997A mag 10.87 Sp B8 20474+5407 ES 997B sep 1.9 P.A. 276.10 mag 13.2 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 20474+5407 : ALADIN DSS IMAGE @ 20h 47m 25.37s +54° 06' 48.2"
 
 
 
 
WDS 20474+5407 ES 997 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20474+5407 ES 997 distance=0' 20455+5401 HLD 41AB distance=19' 20455+5401 HLD 41AC distance=19' 20448+5430 TOI1356 distance=33' 20515+5403 ARG 41BC distance=37' 20515+5403 ARG 41AB distance=37' 20518+5357 TDT2586 distance=40' 20509+5342 TDT2576 distance=40' 20506+5452 HJ 1587AB distance=53' 20506+5452 DJU 5AC distance=53' 20506+5452 DJU 5CD distance=54' 20421+5436 ES 994 distance=55' 20443+5457 TDT2508 distance=58' 20403+5413 OSO 129AB distance=64' 20403+5413 OSO 129AC distance=64' 20403+5413 OSO 129AD distance=64' 20403+5413 OSO 129AE distance=64' 20402+5427 A 1682 distance=67' 20414+5454 TDS1090 distance=71' 20424+5312 RAO 618CD distance=72' 20558+5417 CBL 89 distance=74' 20444+5253 MLR 643 distance=79' 20411+5504 TDS1089 distance=80' 20460+5247 ES 996 distance=81' 20396+5450 ES 993 distance=82' 20433+5521 LLO 1 distance=83' 20408+5307 ES 2698AB distance=85' 20388+5447 STI2550 distance=86' 20377+5351 A 1681AB distance=88' 20377+5351 A 1681AC distance=88' 20376+5429 KPP2376 distance=90' 20385+5453 STI2548 distance=91' 20375+5437 STI2546 distance=93' 20369+5429 STI2545 distance=94' 20400+5515 HJ 1562AB distance=94' 20400+5515 VBS 31AC distance=94' 20419+5529 TDT2477 distance=96' 20368+5431 TDT2419 distance=96' 20427+5238 A 1683 distance=99' 20385+5308 MLR 642 distance=100' 20479+5224 ES 93 distance=103' 20358+5435 ES 991CD distance=105' 20358+5435 ES 991AB distance=106' 20358+5435 ES 991AC distance=106' 20475+5553 HJ 1580 distance=107' 20354+5435 STI2543 distance=110' 20380+5522 STI2547 distance=111' 20384+5248 TDT2442Aa,Ab distance=113' 20384+5248 SKF 348AB distance=113' 20566+5250 A 1437 distance=113' 21006+5432 HJ 1605DE distance=116' 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 20474+5407 ES 997 274 3.3
Show 20455+5401 HLD 41 AB 225 3.7 19
Show 20455+5401 HLD 41 AC 262 9.6 19
Show 20448+5430 TOI1356 289 0.3 33
Show 20515+5403 ARG 41 BC 250 11.3 37
Show 20515+5403 ARG 41 AB 194 11.2 37
Show 20518+5357 TDT2586 350 0.8 40
Show 20509+5342 TDT2576 57 0.7 40
Show 20506+5452 HJ 1587 AB 259 10.4 53
Show 20506+5452 DJU 5 AC 66 77.9 53
Show 20506+5452 DJU 5 CD 173 4.0 54
Show 20421+5436 ES 994 11 4.7 55
Show 20443+5457 TDT2508 82 0.8 58
Show 20403+5413 OSO 129 AB 141 10.8 64
Show 20403+5413 OSO 129 AC 115 17.1 64
Show 20403+5413 OSO 129 AD 143 19.9 64
Show 20403+5413 OSO 129 AE 70 19.7 64
Show 20402+5427 A 1682 49 1.4 67
Show 20414+5454 TDS1090 226 1.0 71
Show 20424+5312 RAO 618 CD 36 0.3 72
Show 20558+5417 CBL 89 150 14.4 74
Show 20444+5253 MLR 643 127 0.3 79
Show 20411+5504 TDS1089 252 1.4 80
Show 20460+5247 ES 996 264 8.8 81
Show 20396+5450 ES 993 194 2.0 82
Show 20433+5521 LLO 1 20 0.1 83
Show 20408+5307 ES 2698 AB 28 8.3 85
Show 20388+5447 STI2550 183 12.4 86
Show 20377+5351 A 1681 AB 209 4.4 88
Show 20377+5351 A 1681 AC 339 56.9 88
Show 20376+5429 KPP2376 92 20.5 90
Show 20385+5453 STI2548 168 13.8 91
Show 20375+5437 STI2546 38 8.9 93
Show 20369+5429 STI2545 159 3.2 94
Show 20400+5515 HJ 1562 AB 167 21.7 94
Show 20400+5515 VBS 31 AC 13 45.6 94
Show 20419+5529 TDT2477 266 1.2 96
Show 20368+5431 TDT2419 80 0.8 96
Show 20427+5238 A 1683 209 0.1 99
Show 20385+5308 MLR 642 143 5.2 100
Show 20479+5224 ES 93 321 26.0 103
Show 20358+5435 ES 991 CD 120 2.6 105
Show 20358+5435 ES 991 AB 297 15.9 106
Show 20358+5435 ES 991 AC 106 61.7 106
Show 20475+5553 HJ 1580 245 10.9 107
Show 20354+5435 STI2543 208 3.2 110
Show 20380+5522 STI2547 86 2.5 111
Show 20384+5248 TDT2442 Aa,Ab 304 0.5 113
Show 20384+5248 SKF 348 AB 178 19.9 113
Show 20566+5250 A 1437 331 1.4 113
Show 21006+5432 HJ 1605 DE 118 21.3 116

 
 
WDS 20474+5407 : COMPONENTS
 
 
  A
B pa=276.1°
sep=1.93"
 
 
20474+5407 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204725.37+540648.2 Mag 10.87 Spectral class B8 (blue-white)
PmRA 2.00 PmDE -7.0 Tycho2 3951-00905-1 ADS 14305
DM BD+53 2490
Tycho2
Tycho2 3951-00905-1 Pflag RAmdeg 311.85574255 DEmdeg 54.11340883
PmRA 7.1 PmDE -4.2 E RAmdeg 25 E DEmdeg 25
E pmRA 2.8 E pmDE 2.7 EpRAm 1988.87 EpDEm 1988.79
Num 3 Q RAmdeg 6.7 Q DEmdeg 3.3 Q pmRA 6.7
Q pmDE 3.3 BTmag 10.840 E BTmag 0.043 VTmag 10.869
E VTmag 0.061 Prox 999 TYC T HIP
CCDM RAdeg 311.85576222 DEdeg 54.11340472 EpRA 1990 1.77
EpDE 1990 1.74 E RAdeg 29.5 E DEdeg 29.7 Posflg
Corr 0.0
 
 
20474+5407 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204725.15+540648.4 Mag 13.2 Calc delta mag 2.33
Calc coord yes