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Current system
20493+3314
ES 31 AC


Nearby doubles
19' : 20482+3326
ES 2377

22' : 20487+3334
ES 9006

25' : 20477+3258
COU1634

26' : 20503+3337
ES 2378

29' : 20470+3318
TDT2535

30' : 20483+3247
TDT2550

35' : 20520+3320
TDT2590

36' : 20477+3343
NSN 736

36' : 20519+3327
GYL 26AB

37' : 20469+3252
ARG 93

42' : 20521+3254
TDT2591

42' : 20460+3308
GYL 69

44' : 20528+3320
LDS2932

44' : 20491+3230
GYL 70

50' : 20525+3246
GYL 39

51' : 20532+3301
ES 2356

51' : 20533+3319
LDS2933

53' : 20481+3403
LDS1047

55' : 20504+3406
GRV 387

57' : 20493+3217
LDS2931AB

58' : 20539+3320
TDT2612

59' : 20462+3358
STT 594AB
Aljanah

60' : 20539+3326
BLL 52

60' : 20522+3401
TDT2593

61' : 20532+3349
TDT2605

61' : 20452+3240
TDT2517



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.

20493+3314 ES 31 AC

 
 
20h 49m 16.21s +33° 13' 47.2" P.A. 143.00 sep 18.7 mag 9.62,9.50 Sp K
 
 
Coord 2000 20493+3314 Discov num ES   31 Comp AC Coord arcsec 2000 20 49 16.21 +33 13 47.2
Date first 1892 Date last 2015 Obs 16
Pa first 141 Pa last 143 P.A. Now (θ) 143°
Sep first 17.9 Sep last 18.665 Sep. Now (ρ) 18.665"
Mag pri 9.62 Mag sec 9.50 delta mag (ΔM) 0.12 Spectral class K (yellow-orange)
Pri motion ra +002 Sec motion ra -007
Pri motion dec +001 Sec motion dec -004
Notes N (See Notes)
rPM=1.277
This double is not physical.
 
 
20493+3314 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show V1862 Cyg 20 49 16 +33 13 47 ES 31 AB 2015 24 238 13.8 9.62 10.92 1.30
Show 20 49 16 +33 13 47 ES 31 AC 2015 16 143 18.7 9.62 9.50 0.12 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2691-03115-1 Gaia DR2 1869010445422735360
 
 
WDS 20493+3314 ES 31 AC : NOTES
 
 
discov_num notes refcode
ES 31 A is a semiregular variable.
 
 
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
20493+3314 ES 31 AC 2007 9 143 18.6 9.62 9.50 K N D 204916.21+331347.2
20493+3314 ES 31 AC 2010 10 143 18.7 9.62 9.50 K N D 204916.21+331347.2
20493+3314 ES 31 AC 2012 12 143 19.2 9.62 9.50 K N 204916.21+331347.2
20493+3314 ES 31 AC 2015 13 143 18.7 9.62 9.50 K N 204916.21+331347.2

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

 
 
WDS 20493+3314 ES 31 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20493+3314 ES 31 AC : MEASURES
 
 
No records found.

 
 
WDS 20493+3314 : VIRTUAL EYEPIECE
 
 

20493+3314 ES 31A mag 9.62 Sp K 20493+3314 ES 31B sep 12.3 P.A. 232.90 mag 10.92 20493+3314 ES 31C sep 17.6 P.A. 147.80 mag 9.5 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 20493+3314 : ALADIN DSS IMAGE @ 20h 49m 16.21s +33° 13' 47.2"
 
 
 
 
WDS 20493+3314 ES 31 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20493+3314 ES 31AC distance=0' 20482+3326 ES 2377 distance=19' 20487+3334 ES 9006 distance=22' 20477+3258 COU1634 distance=25' 20503+3337 ES 2378 distance=26' 20470+3318 TDT2535 distance=29' 20483+3247 TDT2550 distance=30' 20520+3320 TDT2590 distance=35' 20477+3343 NSN 736 distance=36' 20519+3327 GYL 26AB distance=36' 20519+3327 WSI 47AC distance=36' 20469+3252 ARG 93 distance=37' 20521+3254 TDT2591 distance=42' 20460+3308 GYL 69 distance=42' 20528+3320 LDS2932 distance=44' 20491+3230 GYL 70 distance=44' 20525+3246 GYL 39 distance=50' 20532+3301 ES 2356 distance=51' 20533+3319 LDS2933 distance=51' 20481+3403 LDS1047 distance=53' 20504+3406 GRV 387 distance=55' 20493+3217 LDS2931AB distance=57' 20493+3217 HLA 28AC distance=57' 20539+3320 TDT2612 distance=58' 20462+3358 CHR 100Aa,Ab (Aljanah) distance=59' 20462+3358 STT 594AB (Aljanah) distance=59' 20462+3358 BU 676AC (Aljanah) distance=59' 20462+3358 LEP 96AD (Aljanah) distance=59' 20539+3326 BLL 52 distance=60' 20522+3401 TDT2593 distance=60' 20532+3349 TDT2605 distance=61' 20452+3240 TDT2517 distance=61' 20471+3210 ARY 61 distance=69' 20447+3357 ES 2311 distance=71' 20437+3332 GRV 373 distance=72' 20435+3302 GRV 372 distance=73' 20531+3221 ES 2379 distance=73' 20488+3426 SEI1256 distance=73' 20486+3424 ES 249 distance=74' 20448+3401 GRV 376 distance=74' 20472+3422 BU 677AB distance=74' 20472+3422 BU 677AC distance=74' 20534+3220 ES 2380 distance=75' 20487+3159 ES 369 distance=75' 20446+3401 TDT2511 distance=76' 20437+3243 COU1633Aa,Ab distance=77' 20437+3243 ES 2376AB distance=77' 20548+3242 STT 418 distance=77' 20493+3430 POP 51 distance=78' 20540+3220 TDT2615 distance=81' 20442+3404 TDT2507 distance=81' 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 20493+3314 ES 31 AB 238 13.8
Show 20493+3314 ES 31 AC 143 18.7
Show 20482+3326 ES 2377 220 4.3 19
Show 20487+3334 ES 9006 93 25.3 22
Show 20477+3258 COU1634 61 0.4 25
Show 20503+3337 ES 2378 193 6.2 26
Show 20470+3318 TDT2535 86 0.7 29
Show 20483+3247 TDT2550 132 0.9 30
Show 20520+3320 TDT2590 116 0.5 35
Show 20477+3343 NSN 736 354 45.5 36
Show 20519+3327 GYL 26 AB 353 28.6 36
Show 20519+3327 WSI 47 AC 337 11.0 36
Show 20469+3252 ARG 93 87 10.9 37
Show 20521+3254 TDT2591 5 0.5 42
Show 20460+3308 GYL 69 357 26.7 42
Show 20528+3320 LDS2932 107 9.1 44
Show 20491+3230 GYL 70 188 61.2 44
Show 20525+3246 GYL 39 83 14.9 50
Show 20532+3301 ES 2356 250 5.0 51
Show 20533+3319 LDS2933 146 9.0 51
Show 20481+3403 LDS1047 7 110.2 53
Show 20504+3406 GRV 387 254 26.4 55
Show 20493+3217 LDS2931 AB 246 34.4 57
Show 20493+3217 HLA 28 AC 125 5.3 57
Show 20539+3320 TDT2612 202 0.5 58
Show Aljanah 20462+3358 CHR 100 Aa,Ab 350 0.0 59
Show Aljanah 20462+3358 STT 594 AB 261 79.2 59
Show Aljanah 20462+3358 BU 676 AC 269 79.0 59
Show Aljanah 20462+3358 LEP 96 AD 271 93.4 59
Show 20539+3326 BLL 52 59 186.6 60
Show 20522+3401 TDT2593 357 2.3 60
Show 20532+3349 TDT2605 301 0.8 61
Show 20452+3240 TDT2517 144 1.6 61
Show 20471+3210 ARY 61 237 99.4 69
Show 20447+3357 ES 2311 44 7.0 71
Show 20437+3332 GRV 373 178 26.2 72
Show 20435+3302 GRV 372 109 17.3 73
Show 20531+3221 ES 2379 115 7.0 73
Show 20488+3426 SEI1256 279 26.3 73
Show 20486+3424 ES 249 26 7.7 74
Show 20448+3401 GRV 376 179 65.2 74
Show 20472+3422 BU 677 AB 120 10.0 74
Show 20472+3422 BU 677 AC 211 16.8 74
Show 20534+3220 ES 2380 333 5.5 75
Show 20487+3159 ES 369 316 7.1 75
Show 20446+3401 TDT2511 239 0.6 76
Show 20437+3243 COU1633 Aa,Ab 239 1.9 77
Show 20437+3243 ES 2376 AB 124 7.6 77
Show 20548+3242 STT 418 283 0.9 77
Show 20493+3430 POP 51 347 6.6 78
Show 20540+3220 TDT2615 281 0.4 81

 
 
WDS 20493+3314 : COMPONENTS
 
 
  A B
B pa=232.9°
sep=12.27"
 
C pa=147.8°
sep=17.62"
pa=111.4°
sep=20.60"
 
 
20493+3314 A
 
 
Name V1862 Cyg Coord arcsec 2000 204916.21+331347.2 Mag 9.62 Spectral class K (yellow-orange)
PmRA 2.00 PmDE 1.0 HIP 102764 Tycho2 2691-03115-1
BD BD+32 3954
Tycho2
Tycho2 2691-03115-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 13.480 E BTmag 0.274 VTmag 9.620
E VTmag 0.018 Prox 131 TYC T HIP 102764
CCDM A RAdeg 312.31752861 DEdeg 33.22977556 EpRA 1990 1.67
EpDE 1990 1.74 E RAdeg 16.3 E DEdeg 14.8 Posflg
Corr 0.2
Hipparcos
Catalog H HIP 102764 Proxy RAhms 20 49 16.21
DEdms +33 13 47.2 Vmag 8.98 VarFlag 2 R Vmag H
RAdeg 312.318 DEdeg 33.2298 AstroRef A Plx 3.13
CCDM 20493+3314 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual B M HIP AB
Theta 239 Rho 13.142 HD BD BD+32 3954
CD CP Dm number +32 3954 VIred 1.72
SpType N0 R SpType Coord arcsec 2000 204916.21+331347.2
Hipparcos 2
HIP 102764 Sn 15 So 3 Nc 2
RArad 5.4509692389 DErad 0.5799690271 Plx 0.71 PmRA 0.22
PmDE -8.29 E RArad 1.42 E DErad 1.58 E Plx 2.4
E pmRA 1.52 E pmDE 1.62 Hpmag 9.0829 E Hpmag 0.024
SHp 0.13 VA 2 BV 1.745 E BV 0.4
VI 1.72
CCDM
Ccdm 20493+3314 RComp Comp A Note1
Note2 Discov num DRAs -1.81 DDEs -10.2
R dRAs 10 Year Theta Rho
Obs 3 Vmag 10.7 Sp PmNote *
PmRA 6 PmDE 41 Dm number +32 3954 Cat1 BD
Name2 +33 2009 Cat2 AGK2/3 HD M HD
ADS BDS A14338 M ADS BDS N IDS IDS 20452N3252A
HIC 102764
 
 
20493+3314 B
 
 
Coord arcsec 2000 204915.43+331339.8 Mag 10.92 PmRA -25.00 PmDE -22.0
Tycho2 2691-03116-1 Calc delta mag 1.3 Calc coord yes
Tycho2
Tycho2 2691-03116-1 Pflag RAmdeg 312.31376924 DEmdeg 33.22780942
PmRA -22.3 PmDE -21.1 E RAmdeg 37 E DEmdeg 33
E pmRA 1.8 E pmDE 1.7 EpRAm 1986.47 EpDEm 1987.30
Num 5 Q RAmdeg 1.3 Q DEmdeg 0.6 Q pmRA 1.3
Q pmDE 0.6 BTmag 11.879 E BTmag 0.069 VTmag 10.920
E VTmag 0.050 Prox 131 TYC T HIP 102764
CCDM B RAdeg 312.31383167 DEdeg 33.22785778 EpRA 1990 1.66
EpDE 1990 1.73 E RAdeg 38.2 E DEdeg 34.4 Posflg
Corr 0.2
CCDM
Ccdm 20493+3314 RComp Comp B Note1
Note2 Discov num ES 31 DRAs -2.69 DDEs -17.3
R dRAs 10 Year 1892 Theta 245 Rho 9.8
Obs 1 Vmag 11.0 Sp K PmNote *
PmRA -36 PmDE 6 Dm number Cat1
Name2 +33 2008 Cat2 AGK2/3 HD M HD
ADS BDS A14338 M ADS BDS N IDS IDS 20452N3252B
HIC 102764
 
 
20493+3314 C
 
 
Coord arcsec 2000 204916.96+331332.3 Mag 9.5 PmRA -7.00 PmDE -4.0
Calc delta mag 0.12 Calc coord yes
CCDM
Ccdm 20493+3314 RComp Comp C Note1
Note2 Discov num ES 31 DRAs -0.85 DDEs -27.2
R dRAs 10 Year 1892 Theta 141 Rho 17.6
Obs 1 Vmag 11.7 Sp PmNote *
PmRA -6 PmDE 6 Dm number Cat1
Name2 +33 2010 Cat2 AGK2/3 HD M HD
ADS BDS A14338 M ADS BDS N IDS IDS 20452N3252C
HIC