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Doubles in session


Current system
20546+4042
ES 1685 BC


Nearby doubles
5' : 20544+4042
STT 420

30' : 20542+4111
ES 1684

30' : 20526+4024
GRV 391

32' : 20555+4112
ES 1686

35' : 20539+4115
KPP1503

37' : 20576+4058
A 400

38' : 20581+4043
COU2430AB

39' : 20556+4004
TDT2634

40' : 20572+4110
HDS2986

43' : 20511+4051
TDT2578

44' : 20516+4106
ES 1683

45' : 20520+4009
MLB 955

48' : 20569+4122
LDS2471

53' : 20558+3951
LDS2469

58' : 20539+4139
BRT2280

58' : 20585+4121
BLL 53

59' : 20553+3944
SEI1315

59' : 20508+4120
TDT2575

60' : 20509+4123
LDS2458

60' : 20534+4139
ES 1574

61' : 20495+4035
COU2426

61' : 20510+4125
COU2427

62' : 20551+3941
MLB 886

62' : 20555+3940
MLB 783

62' : 20525+4138
LDS2463

64' : 21002+4027
TDT2688



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.

20546+4042 ES 1685 BC

 
 
20h 54m 44.02s +40° 41' 45.9" P.A. 74.00 sep 2.8 mag 14.00,14.50
 
 
Coord 2000 20546+4042 Discov num ES 1685 Comp BC Coord arcsec 2000 20 54 44.02 +40 41 45.9
Date first 1917 Date last 2015 Obs 4
Pa first 75 Pa last 73.5 P.A. Now (θ) 73.5°
Sep first 1.7 Sep last 2.757 Sep. Now (ρ) 2.757"
Mag pri 14.00 Mag sec 14.50 delta mag (ΔM) 0.5 Spectral class
Pri motion ra +013 Sec motion ra
Pri motion dec -004 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20546+4042 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 54 42 +40 41 39 ES 1685 AB 2015 5 73 24.2 11.02 14.00 2.98
Show 20 54 44 +40 41 46 ES 1685 BC 2015 4 74 2.8 14.00 14.50 0.50 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2065478742206987392
 
 
WDS 20546+4042 ES 1685 BC : 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
20546+4042 ES 1685 BC 1917 1 75 1.7 14.00 14.50 205444.02+404145.9
20546+4042 ES 1685 BC 2011 2 74 2.7 14.00 14.50 205444.02+404145.9
20546+4042 ES 1685 BC 2015 4 74 2.8 14.00 14.50 205444.02+404145.9

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

 
 
WDS 20546+4042 ES 1685 BC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20546+4042 ES 1685 BC : MEASURES
 
 
No records found.

 
 
WDS 20546+4042 : VIRTUAL EYEPIECE
 
 

20546+4042 ES 1685A mag 11.02 20546+4042 ES 1685B sep 24.0 P.A. 73.10 mag 14 20546+4042 ES 1685C sep 26.2 P.A. 72.70 mag 14.5 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 20546+4042 : ALADIN DSS IMAGE @ 20h 54m 44.02s +40° 41' 45.9"
 
 
 
 
WDS 20546+4042 ES 1685 BC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20546+4042 ES 1685BC distance=0' 20546+4042 ES 1685AB distance=1' 20544+4042 STT 420 distance=5' 20542+4111 ES 1684 distance=30' 20526+4024 GRV 391 distance=30' 20555+4112 ES 1686 distance=32' 20539+4115 KPP1503 distance=35' 20576+4058 A 400 distance=37' 20581+4043 COU2430AB distance=38' 20581+4043 COU2430AB,C distance=38' 20556+4004 TDT2634 distance=39' 20572+4110 HDS2986 distance=40' 20511+4051 TDT2578 distance=43' 20516+4106 ES 1683 distance=44' 20520+4009 MLB 955 distance=45' 20569+4122 LDS2471 distance=48' 20599+4016 HDS2989Da,Db distance=50' 20599+4016 RAO 72DE distance=50' 20558+3951 LDS2469 distance=53' 20539+4139 BRT2280 distance=58' 20585+4121 BLL 53 distance=58' 20553+3944 SEI1315 distance=59' 20508+4120 TDT2575 distance=59' 20509+4123 LDS2458 distance=60' 20534+4139 ES 1574 distance=60' 20495+4035 COU2426 distance=61' 20510+4125 COU2427 distance=61' 20551+3941 MLB 886 distance=62' 20555+3940 MLB 783 distance=62' 20525+4138 LDS2463 distance=62' 21002+4027 TDT2688 distance=64' 20514+4134 LDS2460 distance=64' 20599+4016 BUP 221BC distance=65' 20599+4016 COU2431Aa,Ab distance=65' 20599+4016 ENG 79AB distance=65' 20599+4016 LEP 98AD distance=65' 20599+4016 BUP 221AC distance=65' 20599+4016 LSC 1Aa1,2 distance=65' 20588+3957 TDT2670 distance=65' 20577+3943 COU2429 distance=65' 20531+3940 SEI1292 distance=66' 20545+3937 BRT2281 distance=66' 20519+4140 COU2428 distance=67' 20599+4016 SEI1363CR distance=68' 20549+3933 BKO 471 distance=70' 20514+3945 MLB 779AB distance=70' 20514+3945 DAM 316AC distance=70' 20514+3945 DAM 316AD distance=70' 20515+3944 DAM 317AB distance=71' 20515+3944 DAM 317AC distance=71' 20488+4024 ALI1192 distance=71' 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 20546+4042 ES 1685 BC 74 2.8
Show 20546+4042 ES 1685 AB 73 24.2 1
Show 20544+4042 STT 420 2 5.8 5
Show 20542+4111 ES 1684 277 7.9 30
Show 20526+4024 GRV 391 144 59.5 30
Show 20555+4112 ES 1686 196 7.7 32
Show 20539+4115 KPP1503 94 11.3 35
Show 20576+4058 A 400 69 1.9 37
Show 20581+4043 COU2430 AB 254 0.4 38
Show 20581+4043 COU2430 AB,C 176 3.0 38
Show 20556+4004 TDT2634 54 1.9 39
Show 20572+4110 HDS2986 176 0.1 40
Show 20511+4051 TDT2578 81 2.6 43
Show 20516+4106 ES 1683 205 5.2 44
Show 20520+4009 MLB 955 27 6.6 45
Show 20569+4122 LDS2471 43 3.2 48
Show 20599+4016 HDS2989 Da,Db 143 0.1 50
Show 20599+4016 RAO 72 DE 118 19.8 50
Show 20558+3951 LDS2469 2 3.3 53
Show 20539+4139 BRT2280 192 5.0 58
Show 20585+4121 BLL 53 352 169.0 58
Show 20553+3944 SEI1315 281 29.0 59
Show 20508+4120 TDT2575 4 2.6 59
Show 20509+4123 LDS2458 123 14.1 60
Show 20534+4139 ES 1574 158 1.4 60
Show 20495+4035 COU2426 328 1.2 61
Show 20510+4125 COU2427 312 0.5 61
Show 20551+3941 MLB 886 141 7.0 62
Show 20555+3940 MLB 783 288 5.6 62
Show 20525+4138 LDS2463 151 27.8 62
Show 21002+4027 TDT2688 104 0.5 64
Show 20514+4134 LDS2460 195 8.4 64
Show 20599+4016 BUP 221 BC 107 203.7 65
Show 20599+4016 COU2431 Aa,Ab 205 2.2 65
Show 20599+4016 ENG 79 AB 219 165.9 65
Show 20599+4016 LEP 98 AD 258 999.9 65
Show 20599+4016 BUP 221 AC 154 210.3 65
Show 20599+4016 LSC 1 Aa1,2 257 0.0 65
Show 20588+3957 TDT2670 6 0.5 65
Show 20577+3943 COU2429 209 0.8 65
Show 20531+3940 SEI1292 205 24.8 66
Show 20545+3937 BRT2281 73 3.6 66
Show 20519+4140 COU2428 113 0.7 67
Show 20599+4016 SEI1363 CR 37 8.7 68
Show 20549+3933 BKO 471 171 5.5 70
Show 20514+3945 MLB 779 AB 124 9.0 70
Show 20514+3945 DAM 316 AC 79 6.3 70
Show 20514+3945 DAM 316 AD 304 13.8 70
Show 20515+3944 DAM 317 AB 95 14.8 71
Show 20515+3944 DAM 317 AC 357 15.2 71
Show 20488+4024 ALI1192 2 16.5 71

 
 
WDS 20546+4042 : COMPONENTS
 
 
  A B
B pa=73.1°
sep=24.02"
 
C pa=72.7°
sep=26.16"
pa=68.7°
sep=2.15"
 
 
20546+4042 A
 
 
Coord arcsec 2000 205442.00+404138.9 Mag 11.02 PmRA -3.00 PmDE -17.0
Tycho2 3171-00377-1
Tycho2
Tycho2 3171-00377-1 Pflag RAmdeg 313.67500560 DEmdeg 40.69414689
PmRA -3.2 PmDE -16.4 E RAmdeg 35 E DEmdeg 39
E pmRA 2.6 E pmDE 2.4 EpRAm 1985.52 EpDEm 1987.40
Num 3 Q RAmdeg 1.6 Q DEmdeg 1.7 Q pmRA 1.6
Q pmDE 1.7 BTmag 12.826 E BTmag 0.229 VTmag 11.017
E VTmag 0.064 Prox 999 TYC HIP
CCDM RAdeg 313.67498972 DEdeg 40.69419472 EpRA 1990 1.51
EpDE 1990 1.72 E RAdeg 58.5 E DEdeg 45.3 Posflg
Corr 0.0
 
 
20546+4042 B
 
 
Coord arcsec 2000 205444.02+404145.9 Coord calc 205444.02+404145.9 Mag 14 PmRA 13.00
PmDE -4.0 Calc delta mag 2.98
 
 
20546+4042 C
 
 
Coord arcsec 2000 205444.20+404146.7 Mag 14.5 Calc delta mag 3.48 Calc coord yes