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Doubles in session


Current system
20461+4452
ES 30
RR Cyg


Nearby doubles
5' : 20459+4448
ES 2701

28' : 20472+4427
COU2424

30' : 20434+4501
ES 668AB

30' : 20433+4456
ES 2699

31' : 20449+4425
ES 1332

32' : 20432+4458
BKO 159

35' : 20436+4514
CBL 85

36' : 20485+4519
LDS2456

36' : 20494+4452
TDS1103

37' : 20494+4458
GRV 384

37' : 20440+4521
KPP3361

38' : 20432+4431
COU2422

43' : 20461+4410
BRT2275

45' : 20473+4535
HO 280

46' : 20427+4521
ES 1270

46' : 20490+4525
SMA 120

47' : 20492+4525
COU2646

48' : 20504+4518
SMA 121

51' : 20500+4521
ES 2702

54' : 20511+4459
LDS2459

55' : 20489+4537
HDS2965

55' : 20416+4424
COU2541

56' : 20414+4517
H N 73
Deneb

56' : 20504+4525
LDS5912

58' : 20506+4421
CHN 29

59' : 20421+4532
BKO 157



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.

20461+4452 ES 30 (RR Cyg)

 
 
20h 46m 04.55s +44° 52' 09.6" P.A. 57.00 sep 17.1 mag 9.62,12.50 Sp F8Ib
 
 
Coord 2000 20461+4452 Discov num ES   30 Comp Coord arcsec 2000 20 46 04.55 +44 52 09.6
Date first 1899 Date last 2015 Obs 9
Pa first 58 Pa last 57 P.A. Now (θ) 57°
Sep first 18.1 Sep last 17.138 Sep. Now (ρ) 17.138"
Mag pri 9.62 Mag sec 12.50 delta mag (ΔM) 2.88 Spectral class F8Ib (yellow-white)
Pri motion ra +000 Sec motion ra -002
Pri motion dec -002 Sec motion dec -005
Notes N (See Notes)
rPM=0.67
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name RR Cyg Constellation Cygnus Tycho2 3178-00345-1 Gaia DR2 2070149433243897728
 
 
WDS 20461+4452 ES 30 (RR Cyg) : NOTES
 
 
discov_num notes refcode
ES 30 A is the semiregular variable RR Cyg. BD+44@3571a.
 
 
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Es_1904a MNRAS 64, 238, 1904 (data superceded by MNRAS 65, 710, 1905) 1905MNRAS..65..710E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
20461+4452 ES 30 2003 3 57 17.2 9.62 12.50 F8Ib N D 204604.55+445209.6
20461+4452 ES 30 2008 4 58 17.2 9.62 12.50 F8Ib N D 204604.55+445209.6
20461+4452 ES 30 2015 7 57 17.1 9.62 12.50 F8Ib N 204604.55+445209.6

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

 
 
WDS 20461+4452 ES 30 (RR Cyg) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20461+4452 ES 30 (RR Cyg) : MEASURES
 
 
No records found.

 
 
WDS 20461+4452 (RR Cyg) : VIRTUAL EYEPIECE
 
 

20461+4452 ES 30A mag 9.62 Sp F8Ib 20461+4452 ES 30B sep 13.8 P.A. 47.50 mag 12.5 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 20461+4452 (RR Cyg) : ALADIN DSS IMAGE @ 20h 46m 04.55s +44° 52' 09.6"
 
 
 
 
WDS 20461+4452 ES 30 (RR Cyg) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20461+4452 ES 30 distance=0' 20459+4448 ES 2701 distance=5' 20472+4427 COU2424 distance=28' 20434+4501 ES 668AB distance=30' 20434+4501 ES 668AC distance=30' 20434+4501 FYM 322AD distance=30' 20433+4456 ES 2699 distance=30' 20449+4425 ES 1332 distance=31' 20432+4458 BKO 159 distance=32' 20436+4514 CBL 85 distance=35' 20485+4519 LDS2456 distance=36' 20494+4452 TDS1103 distance=36' 20494+4458 GRV 384 distance=37' 20440+4521 KPP3361 distance=37' 20432+4431 COU2422 distance=38' 20461+4410 BRT2275 distance=43' 20473+4535 HO 280 distance=45' 20427+4521 ES 1270 distance=46' 20490+4525 SMA 120 distance=46' 20492+4525 COU2646 distance=47' 20504+4518 SMA 121 distance=48' 20500+4521 ES 2702 distance=51' 20511+4459 LDS2459 distance=54' 20489+4537 HDS2965 distance=55' 20416+4424 COU2541 distance=55' 20414+4517 H N 73 (Deneb) distance=56' 20504+4525 LDS5912 distance=56' 20506+4421 CHN 29 distance=58' 20421+4532 BKO 157 distance=59' 20420+4532 BRT2271 distance=59' 20461+4353 GRV 378 distance=59' 20464+4551 CVR 230 distance=59' 20509+4421 CHN 30AB distance=60' 20509+4421 CHN 30Aa,Ab distance=60' 20514+4519 ARG 40 distance=63' 20501+4404 STT 595AB distance=65' 20501+4404 STG 9AC distance=65' 20501+4404 FYM 92AD distance=65' 20501+4404 FYM 92AE distance=65' 20501+4404 FYM 92AF distance=65' 20521+4438 HER 18 distance=66' 20512+4415 CHN 31 distance=67' 20476+4347 CHN 28 distance=67' 20473+4345 COU2425 distance=69' 20423+4549 BKO 158EH distance=69' 20423+4549 BKO 158EF distance=69' 20423+4549 BKO 158EG distance=69' 20423+4549 BKO 158EI distance=69' 20423+4549 STT 411AB distance=70' 20423+4549 WAL 132AC distance=70' 20423+4549 BKO 158AF 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 20461+4452 ES 30 57 17.1
Show 20459+4448 ES 2701 81 50.9 5
Show 20472+4427 COU2424 255 0.5 28
Show 20434+4501 ES 668 AB 68 5.2 30
Show 20434+4501 ES 668 AC 269 23.4 30
Show 20434+4501 FYM 322 AD 200 18.7 30
Show 20433+4456 ES 2699 296 40.1 30
Show 20449+4425 ES 1332 325 7.0 31
Show 20432+4458 BKO 159 37 13.2 32
Show 20436+4514 CBL 85 166 17.7 35
Show 20485+4519 LDS2456 236 18.0 36
Show 20494+4452 TDS1103 200 0.8 36
Show 20494+4458 GRV 384 222 22.1 37
Show 20440+4521 KPP3361 134 2.2 37
Show 20432+4431 COU2422 236 1.3 38
Show 20461+4410 BRT2275 10 2.8 43
Show 20473+4535 HO 280 75 11.7 45
Show 20427+4521 ES 1270 289 5.9 46
Show 20490+4525 SMA 120 313 4.3 46
Show 20492+4525 COU2646 266 0.4 47
Show 20504+4518 SMA 121 32 11.6 48
Show 20500+4521 ES 2702 348 8.6 51
Show 20511+4459 LDS2459 228 43.7 54
Show 20489+4537 HDS2965 282 0.1 55
Show 20416+4424 COU2541 25 0.4 55
Show Deneb 20414+4517 H N 73 105 75.6 56
Show 20504+4525 LDS5912 252 17.4 56
Show 20506+4421 CHN 29 52 5.3 58
Show 20421+4532 BKO 157 240 8.9 59
Show 20420+4532 BRT2271 269 4.5 59
Show 20461+4353 GRV 378 135 35.3 59
Show 20464+4551 CVR 230 7 112.9 59
Show 20509+4421 CHN 30 AB 92 2.7 60
Show 20509+4421 CHN 30 Aa,Ab 108 0.6 60
Show 20514+4519 ARG 40 250 9.2 63
Show 20501+4404 STT 595 AB 48 55.4 65
Show 20501+4404 STG 9 AC 83 102.7 65
Show 20501+4404 FYM 92 AD 242 51.8 65
Show 20501+4404 FYM 92 AE 190 35.2 65
Show 20501+4404 FYM 92 AF 80 46.9 65
Show 20521+4438 HER 18 85 60.7 66
Show 20512+4415 CHN 31 47 6.7 67
Show 20476+4347 CHN 28 57 5.0 67
Show 20473+4345 COU2425 58 0.2 69
Show 20423+4549 BKO 158 EH 340 51.6 69
Show 20423+4549 BKO 158 EF 281 24.9 69
Show 20423+4549 BKO 158 EG 221 28.7 69
Show 20423+4549 BKO 158 EI 236 39.6 69
Show 20423+4549 STT 411 AB 349 31.8 70
Show 20423+4549 WAL 132 AC 357 71.2 70
Show 20423+4549 BKO 158 AF 143 41.0 70

 
 
WDS 20461+4452 : COMPONENTS
 
 
  A
B pa=47.5°
sep=13.82"
 
 
20461+4452 A
 
 
Componente originario normalizzato AB Var name RR Cyg Coord arcsec 2000 204604.55+445209.6 Mag 9.62
Spectral class F8Ib (yellow-white) PmRA 0.00 PmDE -2.0 Tycho2 3178-00345-1
Tycho2
Tycho2 3178-00345-1 Pflag RAmdeg 311.51898191 DEmdeg 44.86935035
PmRA 0.5 PmDE -1.3 E RAmdeg 17 E DEmdeg 18
E pmRA 1.3 E pmDE 1.2 EpRAm 1988.85 EpDEm 1988.24
Num 9 Q RAmdeg 1.6 Q DEmdeg 1.0 Q pmRA 1.6
Q pmDE 1.1 BTmag 12.253 E BTmag 0.152 VTmag 9.623
E VTmag 0.022 Prox 999 TYC T HIP
CCDM RAdeg 311.51897611 DEdeg 44.86935556 EpRA 1990 1.67
EpDE 1990 1.74 E RAdeg 19.1 E DEdeg 20.0 Posflg
Corr 0.0
CCDM
Ccdm 20461+4452 RComp Comp A Note1
Note2 Discov num DRAs -1.49 DDEs 10.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag Sp M PmNote *
PmRA -12 PmDE 9 Dm number +44 3571 Cat1 BD
Name2 +44 1827 Cat2 AGK2/3 HD M HD
ADS BDS B10521 M ADS BDS N IDS IDS 20426N4430A
HIC
 
 
20461+4452 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204605.51+445218.9 Mag 12.5 PmRA -2.00
PmDE -5.0 Calc delta mag 2.88 Calc coord yes
CCDM
Ccdm 20461+4452 RComp Comp B Note1
Note2 Discov num ES 30 DRAs DDEs
R dRAs Year 1899 Theta 058 Rho 18.1
Obs 1 Vmag 12.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B10521 M ADS BDS N N IDS IDS 20426N4430B
HIC