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Current system
20397+5227
ES 992


Nearby doubles
13' : 20405+5217
TDT2463

20' : 20384+5212
TDT2443

24' : 20384+5248
SKF 348AB

30' : 20427+5238
A 1683

36' : 20429+5206
ES 995

37' : 20372+5159
TDT2428

37' : 20435+5217
TVB 6

41' : 20408+5307
ES 2698AB

43' : 20385+5308
MLR 642

47' : 20379+5144
OSO 128AB

51' : 20444+5253
MLR 643

55' : 20337+5232
TDS1082

61' : 20460+5247
ES 996

65' : 20327+5235
TDT2350

74' : 20334+5142
TDT2369

75' : 20479+5224
ES 93

80' : 20472+5148
BU 365

80' : 20336+5131
KPP2429AB

83' : 20379+5106
ES 88AB

86' : 20377+5351
A 1681AB

90' : 20487+5155
STF2732

91' : 20349+5109
ES 990

93' : 20356+5104
TDT2400

95' : 20318+5128
TDT2339

99' : 20367+5053
HLD 39AB

104' : 20300+5135
RAO 435



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.

20397+5227 ES 992

 
 
20h 39m 42.59s +52° 27' 29.1" P.A. 166.00 sep 7.3 mag 9.90,11.30 Sp F8
 
 
Coord 2000 20397+5227 Discov num ES  992 Comp Coord arcsec 2000 20 39 42.59 +52 27 29.1
Date first 1902 Date last 2019 Obs 13
Pa first 170 Pa last 166.4 P.A. Now (θ) 166.4°
Sep first 6.1 Sep last 7.33 Sep. Now (ρ) 7.33"
Mag pri 9.90 Mag sec 11.30 delta mag (ΔM) 1.4 Spectral class F8 (yellow-white)
Pri motion ra -006 Sec motion ra +001
Pri motion dec +015 Sec motion dec +006
Notes
rPM=0.706
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3586-00617-1 Gaia DR2 2180845545206059392 ADS 14146
 
 
WDS 20397+5227 ES 992 : 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Es_1904a MNRAS 64, 238, 1904 (data superceded by MNRAS 65, 710, 1905) 1905MNRAS..65..710E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
20397+5227 ES 992 2000 4 168 7.4 9.90 11.30 D 203942.59+522729.1
20397+5227 ES 992 2010 5 167 7.4 9.90 11.30 D 203942.59+522729.1
20397+5227 ES 992 2015 8 167 7.5 9.90 11.30 F8 203942.59+522729.1
20397+5227 ES 992 2019 13 166 7.3 9.90 11.30 F8 203942.59+522729.1

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

 
 
WDS 20397+5227 ES 992 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20397+5227 ES 992 : MEASURES
 
 
No records found.

 
 
WDS 20397+5227 : VIRTUAL EYEPIECE
 
 

20397+5227 ES 992A mag 9.9 Sp F8 20397+5227 ES 992B sep 7.2 P.A. 171.60 mag 11.3 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 20397+5227 : ALADIN DSS IMAGE @ 20h 39m 42.59s +52° 27' 29.1"
 
 
 
 
WDS 20397+5227 ES 992 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20397+5227 ES 992 distance=0' 20405+5217 TDT2463 distance=13' 20384+5212 TDT2443 distance=20' 20384+5248 TDT2442Aa,Ab distance=24' 20384+5248 SKF 348AB distance=24' 20427+5238 A 1683 distance=30' 20429+5206 ES 995 distance=36' 20372+5159 TDT2428 distance=37' 20435+5217 TVB 6 distance=37' 20408+5307 ES 2698AB distance=41' 20385+5308 MLR 642 distance=43' 20379+5144 OSO 128AB distance=47' 20379+5144 OSO 128AC distance=47' 20444+5253 MLR 643 distance=51' 20424+5312 RAO 618CD distance=51' 20337+5232 TDS1082 distance=55' 20460+5247 ES 996 distance=61' 20327+5235 TDT2350 distance=65' 20334+5142 TDT2369 distance=74' 20479+5224 ES 93 distance=75' 20472+5148 BU 365 distance=80' 20336+5131 KPP2429AB distance=80' 20379+5106 ES 88AB distance=83' 20379+5106 KPP4397AC distance=83' 20379+5106 KPP4397BC distance=83' 20379+5106 KPP4397CD distance=84' 20377+5351 A 1681AB distance=86' 20377+5351 A 1681AC distance=86' 20487+5155 STF2732 distance=90' 20349+5109 ES 990 distance=91' 20356+5104 TDT2400 distance=93' 20318+5128 TDT2339 distance=95' 20367+5053 HEI 879Aa,Ab distance=99' 20367+5053 HLD 39AB distance=99' 20300+5135 RAO 435 distance=104' 20403+5413 OSO 129AB distance=106' 20403+5413 OSO 129AC distance=106' 20403+5413 OSO 129AD distance=106' 20403+5413 OSO 129AE distance=106' 20455+5401 HLD 41AB distance=107' 20455+5401 HLD 41AC distance=107' 20441+5043 LEP 171 distance=113' 20285+5141 KPP2206 distance=114' 20402+5427 A 1682 distance=120' 20457+5040 STT 412BC distance=121' 20457+5040 STT 412AB distance=121' 20457+5040 STT 412AC distance=121' 20474+5407 ES 997 distance=122' 20323+5048 RAO 615 distance=122' 20376+5028 L 49 distance=122' 20483+5054 ES 998 distance=123' 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 20397+5227 ES 992 166 7.3
Show 20405+5217 TDT2463 180 2.4 13
Show 20384+5212 TDT2443 111 2.2 20
Show 20384+5248 TDT2442 Aa,Ab 304 0.5 24
Show 20384+5248 SKF 348 AB 178 19.9 24
Show 20427+5238 A 1683 209 0.1 30
Show 20429+5206 ES 995 107 8.6 36
Show 20372+5159 TDT2428 221 0.7 37
Show 20435+5217 TVB 6 318 11.7 37
Show 20408+5307 ES 2698 AB 28 8.3 41
Show 20385+5308 MLR 642 143 5.2 43
Show 20379+5144 OSO 128 AB 58 8.9 47
Show 20379+5144 OSO 128 AC 157 21.3 47
Show 20444+5253 MLR 643 127 0.3 51
Show 20424+5312 RAO 618 CD 36 0.3 51
Show 20337+5232 TDS1082 5 1.0 55
Show 20460+5247 ES 996 264 8.8 61
Show 20327+5235 TDT2350 329 1.4 65
Show 20334+5142 TDT2369 61 2.4 74
Show 20479+5224 ES 93 321 26.0 75
Show 20472+5148 BU 365 288 17.2 80
Show 20336+5131 KPP2429 AB 346 20.8 80
Show 20379+5106 ES 88 AB 127 7.8 83
Show 20379+5106 KPP4397 AC 193 51.7 83
Show 20379+5106 KPP4397 BC 201 49.0 83
Show 20379+5106 KPP4397 CD 35 2.2 84
Show 20377+5351 A 1681 AB 209 4.4 86
Show 20377+5351 A 1681 AC 339 56.9 86
Show 20487+5155 STF2732 73 4.3 90
Show 20349+5109 ES 990 299 2.6 91
Show 20356+5104 TDT2400 43 1.2 93
Show 20318+5128 TDT2339 338 1.0 95
Show 20367+5053 HEI 879 Aa,Ab 137 0.1 99
Show 20367+5053 HLD 39 AB 174 7.5 99
Show 20300+5135 RAO 435 301 3.1 104
Show 20403+5413 OSO 129 AB 141 10.8 106
Show 20403+5413 OSO 129 AC 115 17.1 106
Show 20403+5413 OSO 129 AD 143 19.9 106
Show 20403+5413 OSO 129 AE 70 19.7 106
Show 20455+5401 HLD 41 AB 225 3.7 107
Show 20455+5401 HLD 41 AC 262 9.6 107
Show 20441+5043 LEP 171 172 4.4 113
Show 20285+5141 KPP2206 256 18.3 114
Show 20402+5427 A 1682 49 1.4 120
Show 20457+5040 STT 412 BC 186 5.0 121
Show 20457+5040 STT 412 AB 279 26.0 121
Show 20457+5040 STT 412 AC 268 26.2 121
Show 20474+5407 ES 997 274 3.3 122
Show 20323+5048 RAO 615 157 0.8 122
Show 20376+5028 L 49 82 4.1 122
Show 20483+5054 ES 998 176 3.2 123

 
 
WDS 20397+5227 : COMPONENTS
 
 
  A
B pa=171.6°
sep=7.20"
 
 
20397+5227 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 203942.59+522729.1 Mag 9.9 Spectral class F8 (yellow-white)
PmRA -6.00 PmDE 15.0 Tycho2 3586-00617-1 ADS 14146
DM BD+51 2920
Tycho2
Tycho2 3586-00617-1 Pflag RAmdeg 309.92750484 DEmdeg 52.45809896
PmRA -6.7 PmDE 14.5 E RAmdeg 19 E DEmdeg 21
E pmRA 1.6 E pmDE 1.5 EpRAm 1989.95 EpDEm 1989.50
Num 5 Q RAmdeg 0.7 Q DEmdeg 2.9 Q pmRA 0.7
Q pmDE 3.1 BTmag 10.572 E BTmag 0.036 VTmag 10.047
E VTmag 0.031 Prox 999 TYC T HIP
CCDM RAdeg 309.92752944 DEdeg 52.45806861 EpRA 1990 1.65
EpDE 1990 1.63 E RAdeg 19.1 E DEdeg 21.3 Posflg
Corr 0.1
 
 
20397+5227 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203942.70+522722.0 Mag 11.3 PmRA 1.00
PmDE 6.0 Calc delta mag 1.4 Calc coord yes