20305+3454 ES 2304

 
 
20h 30m 27.80s +34° 54' 16.9" P.A. 39.00 sep 3.6 mag 10.11,13.90 Sp A5
 
 
Coord 2000 20305+3454 Discov num ES 2304 Comp Coord arcsec 2000 20 30 27.80 +34 54 16.9
Date first 1927 Date last 2015 Obs 3
Pa first 46 Pa last 39 P.A. Now (θ) 39°
Sep first 3.2 Sep last 3.638 Sep. Now (ρ) 3.638"
Mag pri 10.11 Mag sec 13.90 delta mag (ΔM) 3.79 Spectral class A5 (white)
Pri motion ra -002 Sec motion ra +159
Pri motion dec -002 Sec motion dec +200
Notes U (Proper motion indicates non-physical)
rPM=1.011
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2693-01056-1 Gaia DR2 2056534902309501184
 
 
WDS 20305+3454 ES 2304 : 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Es_1904a MNRAS 64, 238, 1904 (data superceded by MNRAS 65, 710, 1905) 1905MNRAS..65..710E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
20305+3454 ES 2304 1927 1 46 3.2 10.11 13.90 A5 203027.80+345416.9
20305+3454 ES 2304 2011 2 47 3.7 10.11 13.90 A5 u 203027.80+345416.9
20305+3454 ES 2304 2015 3 39 3.6 10.11 13.90 A5 U 203027.80+345416.9

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

 
 
WDS 20305+3454 ES 2304 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20305+3454 ES 2304 : MEASURES
 
 
No records found.

 
 
WDS 20305+3454 : VIRTUAL EYEPIECE
 
 

20305+3454 ES 2304A mag 10.11 Sp A5 20305+3454 ES 2304B sep 3.4 P.A. 33.60 mag 13.9 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.

Radius:
Components only
 
 
WDS 20305+3454 : ALADIN DSS IMAGE @ 20h 30m 27.80s +34° 54' 16.9"
 
 
 
 
WDS 20305+3454 ES 2304 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


20305+3454  ES 2304 distance=0' 20306+3452  ES 2305 distance=3' 20309+3459  SEI1145 distance=8' 20300+3448  J   789 distance=9' 20294+3447  GCB  53 distance=14' 20288+3447  COU2132 distance=23' 20307+3521  HU  760BC distance=27' 20307+3521  HJ 1526A,BC distance=27' 20315+3517  CRB 135 distance=27' 20318+3517  SEI1152 distance=29' 20306+3525  COU1961 distance=32' 20278+3447  COU2131AB distance=33' 20278+3447  GII  86Aa,Ab distance=33' 20329+3515  ES 2306 distance=36' 20316+3420  TOK 338 distance=38' 20287+3423  COU1957 distance=38' 20337+3452  TDT2373 distance=40' 20340+3505  SEI1169 distance=45' 20290+3535  COU1959 distance=46' 20305+3540  SEI1142 distance=46' 20340+3441  STT 408 distance=47' 20339+3515  WRH  34AB distance=48' 20339+3515  BU 1490AC distance=48' 20288+3541  SEI1130 distance=51' 20344+3510  TDT2383 distance=52' 20344+3513  J  1143 distance=52' 20266+3424  TDT2274 distance=57' 20258+3504  TDT2264 distance=58' 20260+3512  COU2129 distance=58' 20291+3550  HO  594AB distance=59' 20291+3550  GRF  16AC distance=59' 20355+3450  ES 2307 distance=63' 20322+3552  GRV 350 distance=63' 20355+3510  POP   6 distance=64' 20355+3507  SEI1183 distance=64' 20265+3414  TDT2271 distance=64' 20355+3509  POP   7 distance=64' 20356+3510  STF2702 distance=65' 20350+3419  J   791AB distance=66' 20350+3419  J   791AC distance=66' 20356+3432  J   792 distance=67' 20353+3525  ES 2250 distance=67' 20321+3558  COU2133AB distance=67' 20321+3558  COU2133Aa,Ab distance=67' 20359+3458  J   793 distance=68' 20281+3353  COU1956 distance=68' 20346+3541  TDT2386 distance=69' 20315+3347  LAF  62AB distance=70' 20315+3347  LAF  62AC distance=70' 20315+3347  LAF  62AD distance=70' 20315+3347  LAF  62AE distance=70' 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 20305+3454 ES 2304 39 3.6
Show 20306+3452 ES 2305 286 6.7 3
Show 20309+3459 SEI1145 88 7.7 8
Show 20300+3448 J 789 97 2.3 9
Show 20294+3447 GCB 53 338 4.3 14
Show 20288+3447 COU2132 108 1.2 23
Show 20307+3521 HU 760 BC 67 0.3 27
Show 20307+3521 HJ 1526 A,BC 148 8.8 27
Show 20315+3517 CRB 135 4 16.6 27
Show 20318+3517 SEI1152 316 25.3 29
Show 20306+3525 COU1961 205 0.4 32
Show 20278+3447 COU2131 AB 281 1.1 33
Show 20278+3447 GII 86 Aa,Ab 113 0.4 33
Show 20329+3515 ES 2306 328 7.4 36
Show 20316+3420 TOK 338 2 94.2 38
Show 20287+3423 COU1957 84 1.2 38
Show 20337+3452 TDT2373 67 0.8 40
Show 20340+3505 SEI1169 262 20.8 45
Show 20290+3535 COU1959 323 0.4 46
Show 20305+3540 SEI1142 78 21.7 46
Show 20340+3441 STT 408 193 1.6 47
Show 20339+3515 WRH 34 AB 278 0.3 48
Show 20339+3515 BU 1490 AC 210 115.1 48
Show 20288+3541 SEI1130 26 11.3 51
Show 20344+3510 TDT2383 124 0.6 52
Show 20344+3513 J 1143 271 4.1 52
Show 20266+3424 TDT2274 339 0.5 57
Show 20258+3504 TDT2264 59 1.2 58
Show 20260+3512 COU2129 163 0.1 58
Show 20291+3550 HO 594 AB 212 15.9 59
Show 20291+3550 GRF 16 AC 163 104.0 59
Show 20355+3450 ES 2307 90 3.3 63
Show 20322+3552 GRV 350 159 36.5 63
Show 20355+3510 POP 6 219 6.5 64
Show 20355+3507 SEI1183 -1 -1.0 64
Show 20265+3414 TDT2271 171 1.6 64
Show 20355+3509 POP 7 66 7.9 64
Show 20356+3510 STF2702 208 3.1 65
Show 20350+3419 J 791 AB 181 3.7 66
Show 20350+3419 J 791 AC 229 18.2 66
Show 20356+3432 J 792 321 3.4 67
Show 20353+3525 ES 2250 121 5.5 67
Show 20321+3558 COU2133 AB 29 2.4 67
Show 20321+3558 COU2133 Aa,Ab 119 0.1 67
Show 20359+3458 J 793 67 2.9 68
Show 20281+3353 COU1956 239 0.4 68
Show 20346+3541 TDT2386 203 0.5 69
Show 20315+3347 LAF 62 AB 341 2.0 70
Show 20315+3347 LAF 62 AC 51 2.4 70
Show 20315+3347 LAF 62 AD 289 3.8 70
Show 20315+3347 LAF 62 AE 138 3.8 70

 
 
WDS 20305+3454 : COMPONENTS
 
 
  A
B pa=33.6°
sep=3.39"
 
 
20305+3454 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 203027.80+345416.9 Mag 10.11 Spectral class A5 (white)
PmRA -2.00 PmDE -2.0 Tycho2 2693-01056-1
Tycho2
Tycho2 2693-01056-1 Pflag RAmdeg 307.61587839 DEmdeg 34.90470689
PmRA -2.8 PmDE 0.2 E RAmdeg 16 E DEmdeg 15
E pmRA 1.6 E pmDE 1.6 EpRAm 1990.06 EpDEm 1989.45
Num 7 Q RAmdeg 0.6 Q DEmdeg 2.0 Q pmRA 0.6
Q pmDE 2.1 BTmag 10.371 E BTmag 0.026 VTmag 10.107
E VTmag 0.027 Prox 999 TYC T HIP
CCDM RAdeg 307.61588556 DEdeg 34.90470083 EpRA 1990 1.60
EpDE 1990 1.64 E RAdeg 15.9 E DEdeg 15.8 Posflg
Corr 0.1
 
 
20305+3454 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203027.95+345419.7 Mag 13.9 PmRA 159.00
PmDE 200.0 Calc delta mag 3.79 Calc coord yes