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Current system
20494+4613
ES 670


Nearby doubles
8' : 20489+4607
HJ 1581

22' : 20508+4628
BRT2276AB

24' : 20501+4635
ES 671

28' : 20499+4640
BU 250

35' : 20527+4607
A 750

35' : 20466+4632
KUI 101

36' : 20489+4537
HDS2965

39' : 20464+4551
CVR 230

41' : 20456+4621
HDS2955

42' : 20528+4551
COU2647

43' : 20482+4653
ES 669

43' : 20527+4547
TDT2597

44' : 20519+4537
SMA 122

44' : 20473+4535
HO 280

48' : 20490+4525
SMA 120

49' : 20492+4525
COU2646

49' : 20522+4653
BRT2278

49' : 20504+4525
LDS5912

50' : 20539+4632
ES 673

53' : 20500+4521
ES 2702

55' : 20547+4614
YSC 163

56' : 20485+4519
LDS2456

58' : 20514+4519
ARG 40

59' : 20438+4610
TDT2503

60' : 20437+4619
HO 140

66' : 20535+4523
HDS2975



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.

20494+4613 ES 670

 
 
20h 49m 27.16s +46° 12' 39.2" P.A. 81.00 sep 6.5 mag 11.00,11.10
 
 
Coord 2000 20494+4613 Discov num ES  670 Comp Coord arcsec 2000 20 49 27.16 +46 12 39.2
Date first 1892 Date last 2015 Obs 12
Pa first 82 Pa last 80.7 P.A. Now (θ) 80.7°
Sep first 6.7 Sep last 6.474 Sep. Now (ρ) 6.474"
Mag pri 11.00 Mag sec 11.10 delta mag (ΔM) 0.1 Spectral class
Pri motion ra -019 Sec motion ra -018
Pri motion dec -020 Sec motion dec -019
Notes
rPM=0.051 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2166395698992059648 ADS 14343
 
 
WDS 20494+4613 ES 670 : 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Es_1904a MNRAS 64, 238, 1904 (data superceded by MNRAS 65, 710, 1905) 1905MNRAS..65..710E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
20494+4613 ES 670 2000 6 81 6.4 11.00 11.10 D 204927.16+461239.2
20494+4613 ES 670 2003 7 81 6.4 11.00 11.10 D 204927.16+461239.2
20494+4613 ES 670 2010 8 80 6.3 11.00 11.10 204927.16+461239.2
20494+4613 ES 670 2015 9 81 6.5 11.00 11.10 204927.16+461239.2

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

 
 
WDS 20494+4613 ES 670 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20494+4613 ES 670 : MEASURES
 
 
No records found.

 
 
WDS 20494+4613 : VIRTUAL EYEPIECE
 
 

20494+4613 ES 670A mag 11 20494+4613 ES 670B sep 4.5 P.A. 76.70 mag 11.1 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 20494+4613 : ALADIN DSS IMAGE @ 20h 49m 27.16s +46° 12' 39.2"
 
 
 
 
WDS 20494+4613 ES 670 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20494+4613 ES 670 distance=0' 20489+4607 HJ 1581 distance=8' 20508+4628 BRT2276AB distance=22' 20508+4628 FYM 314AC distance=22' 20508+4628 FYM 314AD distance=22' 20501+4635 ES 671 distance=24' 20499+4640 BU 250 distance=28' 20527+4607 A 750 distance=35' 20466+4632 KUI 101 distance=35' 20489+4537 HDS2965 distance=36' 20464+4551 CVR 230 distance=39' 20456+4621 HDS2955 distance=41' 20528+4551 COU2647 distance=42' 20482+4653 ES 669 distance=43' 20527+4547 TDT2597 distance=43' 20519+4537 SMA 122 distance=44' 20473+4535 HO 280 distance=44' 20490+4525 SMA 120 distance=48' 20492+4525 COU2646 distance=49' 20522+4653 BRT2278 distance=49' 20504+4525 LDS5912 distance=49' 20539+4632 ES 673 distance=50' 20500+4521 ES 2702 distance=53' 20547+4614 YSC 163 distance=55' 20485+4519 LDS2456 distance=56' 20514+4519 ARG 40 distance=58' 20438+4610 TDT2503 distance=59' 20437+4619 HO 140 distance=60' 20535+4523 HDS2975 distance=66' 20531+4615 HJ 1591 distance=66' 20504+4518 SMA 121 distance=69' 20431+4637 BRT2273 distance=70' 20562+4615 A 753AB distance=70' 20562+4615 A 753AB,C distance=70' 20437+4651 TDS1096 distance=71' 20427+4627 TDS1092 distance=72' 20517+4721 TDT2584 distance=73' 20494+4458 GRV 384 distance=75' 20511+4459 LDS2459 distance=75' 20440+4521 KPP3361 distance=77' 20423+4549 BKO 158EH distance=78' 20423+4549 BKO 158EF distance=78' 20423+4549 BKO 158EG distance=78' 20423+4549 BKO 158EI distance=78' 20423+4549 WAL 132BC distance=78' 20423+4549 CTT 15BD distance=78' 20423+4549 CTT 15BE distance=78' 20423+4549 STT 411AB distance=78' 20423+4549 WAL 132AC distance=78' 20423+4549 BKO 158AF distance=78' 20450+4718 BRT2274 distance=80' 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 20494+4613 ES 670 81 6.5
Show 20489+4607 HJ 1581 170 22.4 8
Show 20508+4628 BRT2276 AB 254 3.7 22
Show 20508+4628 FYM 314 AC 149 9.5 22
Show 20508+4628 FYM 314 AD 86 11.2 22
Show 20501+4635 ES 671 91 1.6 24
Show 20499+4640 BU 250 7 18.3 28
Show 20527+4607 A 750 211 0.1 35
Show 20466+4632 KUI 101 112 0.3 35
Show 20489+4537 HDS2965 282 0.1 36
Show 20464+4551 CVR 230 7 112.9 39
Show 20456+4621 HDS2955 289 0.4 41
Show 20528+4551 COU2647 225 0.4 42
Show 20482+4653 ES 669 28 6.8 43
Show 20527+4547 TDT2597 327 1.3 43
Show 20519+4537 SMA 122 262 7.4 44
Show 20473+4535 HO 280 75 11.7 44
Show 20490+4525 SMA 120 313 4.3 48
Show 20492+4525 COU2646 266 0.4 49
Show 20522+4653 BRT2278 196 3.2 49
Show 20504+4525 LDS5912 252 17.4 49
Show 20539+4632 ES 673 76 5.2 50
Show 20500+4521 ES 2702 348 8.6 53
Show 20547+4614 YSC 163 101 0.7 55
Show 20485+4519 LDS2456 236 18.0 56
Show 20514+4519 ARG 40 250 9.2 58
Show 20438+4610 TDT2503 68 0.5 59
Show 20437+4619 HO 140 313 8.0 60
Show 20535+4523 HDS2975 191 0.2 66
Show 20531+4615 HJ 1591 134 10.1 66
Show 20504+4518 SMA 121 32 11.6 69
Show 20431+4637 BRT2273 308 4.7 70
Show 20562+4615 A 753 AB 256 1.0 70
Show 20562+4615 A 753 AB,C 263 9.3 70
Show 20437+4651 TDS1096 147 0.9 71
Show 20427+4627 TDS1092 315 0.9 72
Show 20517+4721 TDT2584 177 2.4 73
Show 20494+4458 GRV 384 222 22.1 75
Show 20511+4459 LDS2459 228 43.7 75
Show 20440+4521 KPP3361 134 2.2 77
Show 20423+4549 BKO 158 EH 340 51.6 78
Show 20423+4549 BKO 158 EF 281 24.9 78
Show 20423+4549 BKO 158 EG 221 28.7 78
Show 20423+4549 BKO 158 EI 236 39.6 78
Show 20423+4549 WAL 132 BC 4 40.1 78
Show 20423+4549 CTT 15 BD 178 86.6 78
Show 20423+4549 CTT 15 BE 141 87.9 78
Show 20423+4549 STT 411 AB 349 31.8 78
Show 20423+4549 WAL 132 AC 357 71.2 78
Show 20423+4549 BKO 158 AF 143 41.0 78
Show 20450+4718 BRT2274 41 4.9 80

 
 
WDS 20494+4613 : COMPONENTS
 
 
  A
B pa=76.7°
sep=4.54"
 
 
20494+4613 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204927.16+461239.2 Mag 11 PmRA -19.00
PmDE -20.0 ADS 14343 DM BD+45 3294
 
 
20494+4613 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204927.59+461240.2 Mag 11.1 PmRA -18.00
PmDE -19.0 Calc delta mag 0.1 Calc coord yes