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Current system
20251+5727
MLB 84


Nearby doubles
24' : 20280+5723
MLR 641

26' : 20231+5745
STI2523

30' : 20217+5717
TDT2204

42' : 20242+5807
A 729AB

44' : 20289+5655
STI2535AB

50' : 20264+5638
STF2687

51' : 20309+5747
TDT2333

51' : 20298+5654
TDT2322

51' : 20312+5714
A 872

57' : 20305+5651
TDT2330

60' : 20312+5653
RAO 22

61' : 20208+5639
STI2520

61' : 20178+5717
KR 50AB

66' : 20330+5712
A 739

67' : 20306+5817
LDS1473

67' : 20311+5814
LDS1474

68' : 20169+5717
TDT2139

70' : 20265+5619
BU 433AB

72' : 20163+5735
TDT2133

75' : 20175+5646
STI2517

76' : 20258+5612
TDT2262

77' : 20187+5823
TDT2157

77' : 20343+5707
STI2541

78' : 20300+5621
STI2537

85' : 20354+5712
TDT2399

85' : 20243+5602
TDT2239



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.

20251+5727 MLB 84

 
 
20h 25m 08.64s +57° 26' 56.7" P.A. 156.00 sep 7.9 mag 9.55,14.10 Sp G0
 
 
Coord 2000 20251+5727 Discov num MLB  84 Comp Coord arcsec 2000 20 25 08.64 +57 26 56.7
Date first 1918 Date last 2015 Obs 9
Pa first 152 Pa last 156.4 P.A. Now (θ) 156.4°
Sep first 7.9 Sep last 7.939 Sep. Now (ρ) 7.939"
Mag pri 9.55 Mag sec 14.10 delta mag (ΔM) 4.55 Spectral class G0 (yellow)
Pri motion ra +016 Sec motion ra +037
Pri motion dec +038 Sec motion dec +025
Notes
rPM=0.553
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 32558 Tycho2 3945-00833-1 Gaia DR2 2187826142673280896
HD 239402
 
 
WDS 20251+5727 MLB 84 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Mlb1918 Mb - Milburn, W. (Espin, T.E.) 1918MNRAS..78..189E
Mlb1918 MNRAS 78, 189, 1918 (MLB 1 - 35; measures by Espin)
Mlb1919 Mb - Milburn, W. (Espin, T.E.) 1919MNRAS..79..211E
Mlb1919 MNRAS 79, 211, 1919 (MLB 36 - 106; measures by Espin)
Mlb1920 Mb - Milburn, W. 1920MNRAS..80..329M
Mlb1920 MNRAS 80, 329, 1920 (MLB 107 - 149)
Mlb1921 Mb - Milburn, W. 1921MNRAS..81..232E
Mlb1921 MNRAS 81, 232, 1921 (MLB 150 - 182)
Mlb1922 Mb j Milburn, W. (Espin, T.E.) 1922MNRAS..82..187E
Mlb1922 MNRAS 82, 187, 1922 (MLB 183 - 241; measures by Espin)
Mlb1923 Mb - Milburn, W. 1923MNRAS..83..154E
Mlb1923 MNRAS 83, 154, 1923 (MLB 242 - 275)
Mlb1924 Mb - Milburn, W. 1924MNRAS..84..162E
Mlb1924 MNRAS 84, 162, 1924 (MLB 276 - 322)
Mlb1925 Mb j Milburn, W. 1925MNRAS..85..276E
Mlb1925 MNRAS 85, 276, 1925 (MLB 323 - 376)
Mlb1926 Mb - Milburn, W. 1926MNRAS..86..131E
Mlb1926 MNRAS 86, 131, 1926 (MLB 377 - 440)
Mlb1927 Mb j Milburn, W. 1927MNRAS..87..215E
Mlb1927 +Po MNRAS 87, 215, 1927 (MLB 441 - 510)
Mlb1928 Mb - Milburn, W. 1928MNRAS..88..185E
Mlb1928 MNRAS 88, 185, 1928 (MLB 511 - 551)
Mlb1929 Mb - Milburn, W. 1929MNRAS..89..268E
Mlb1929 MNRAS 89, 268, 1929 (MLB 552 - 591)
Mlb1930 Mb - Milburn, W. 1930MNRAS..90..317E
Mlb1930 MNRAS 90, 317, 1930 (MLB 592 - 630)
Mlb1931 Mb j Milburn, W. 1931MNRAS..91..294E
Mlb1931 MNRAS 91, 294, 1931 (MLB 631 - 673)
Mlb1932 Ma - Milburn, W. 1932MNRAS..92..214E
Mlb1932 +Mb MNRAS 92, 214, 1932 (MLB 674 - 732)
Mlb1932B Ma - Milburn, W. 1932QB821.A43......
Mlb1932B cited by ADS (Aitken Double Star Cat., 1932)
Mlb1933 Ma j Milburn, W. 1933MNRAS..93..192E
Mlb1933 +Mb MNRAS 93, 192, 1933 (MLB 733 - 806)
Mlb1934 Mb j Milburn, W. 1934MNRAS..94..255M
Mlb1934 MNRAS 94, 255, 1934 (MLB 807 - 912)
Mlb1935 Mb j Milburn, W. 1935MNRAS..95..298M
Mlb1935 MNRAS 95, 298, 1935 (MLB 913 - 969)
Mlb1936 Mb - Milburn, W. 1936MNRAS..96..266M
Mlb1936 MNRAS 96, 266, 1936 (MLB 970 - 997)
Mlb1937 Ma - Milburn, W. 1937MNRAS..97..222M
Mlb1937 +Mb MNRAS 97, 222, 1937 (MLB 998 - 1025)
Mlb1938 Ma - Milburn, W. 1938MNRAS..98..223M
Mlb1938 +Mb MNRAS 98, 223, 1938 (MLB 1026 - 1032)
Mlb1939 Mb - Milburn, W. 1939MNRAS..99..278M
Mlb1939 MNRAS 99, 278, 1939 (MLB 1033 - 1051)
Mlb9999 Mb - Milburn, W. ...................
Mlb9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20251+5727 MLB 84 1999 2 157 7.8 9.55 14.10 G0 D 202508.64+572656.7
20251+5727 MLB 84 2003 3 157 8.0 9.55 14.10 G0 D 202508.64+572656.7
20251+5727 MLB 84 2010 4 157 7.6 9.55 14.10 G0 202508.64+572656.7
20251+5727 MLB 84 2015 5 157 7.9 9.55 14.10 G0 202508.64+572656.7

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

 
 
WDS 20251+5727 MLB 84 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20251+5727 MLB 84 : MEASURES
 
 
No records found.

 
 
WDS 20251+5727 : VIRTUAL EYEPIECE
 
 

20251+5727 MLB 84A mag 9.55 Sp G0 20251+5727 MLB 84B sep 7.5 P.A. 166.80 mag 14.1 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 20251+5727 : ALADIN DSS IMAGE @ 20h 25m 08.64s +57° 26' 56.7"
 
 
 
 
WDS 20251+5727 MLB 84 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20251+5727 MLB 84 distance=0' 20280+5723 MLR 641 distance=24' 20231+5745 STI2523 distance=26' 20217+5717 TDT2204 distance=30' 20242+5807 A 729AB distance=42' 20242+5807 A 729AC distance=42' 20289+5655 STI2535AB distance=44' 20289+5655 TOB 187AC distance=44' 20289+5655 TOB 187AD distance=44' 20264+5638 STF2687 distance=50' 20309+5747 TDT2333 distance=51' 20298+5654 TDT2322 distance=51' 20312+5714 A 872 distance=51' 20305+5651 TDT2330 distance=57' 20178+5717 KR 50CD distance=60' 20312+5653 RAO 22 distance=60' 20208+5639 STI2520 distance=61' 20178+5717 KR 50AB distance=61' 20178+5717 KR 50AC distance=61' 20330+5712 A 739 distance=66' 20306+5817 LDS1473 distance=67' 20311+5814 LDS1474 distance=67' 20169+5717 TDT2139 distance=68' 20265+5619 BU 433AB distance=70' 20265+5619 BU 433AC distance=70' 20163+5735 TDT2133 distance=72' 20175+5646 STI2517 distance=75' 20258+5612 TDT2262 distance=76' 20187+5823 TDT2157 distance=77' 20343+5707 STI2541 distance=77' 20300+5621 STI2537 distance=78' 20354+5712 TDT2399 distance=85' 20243+5602 TDT2239 distance=85' 20227+5850 HJ 2965 distance=86' 20164+5636 STI2516 distance=88' 20185+5840 HJ 2956 distance=91' 20295+5604 KUI 97 distance=91' 20315+5611 HJ 1540AB distance=93' 20315+5611 HJ 1540AC distance=93' 20194+5607 STF2669AB distance=93' 20194+5607 BU 1486AC distance=93' 20356+5808 A 741AB distance=93' 20356+5808 A 741AC distance=93' 20303+5851 STI2538 distance=94' 20268+5900 HJ 1522 distance=95' 20342+5622 HJ 1546 distance=99' 20337+5616 HJ 1545 distance=101' 20256+5544 KPP4196 distance=103' 20351+5624 HJ 1551 distance=104' 20352+5622 HJ 1552 distance=106' 20248+5534 TDS1071 distance=114' 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 20251+5727 MLB 84 156 7.9
Show 20280+5723 MLR 641 43 1.5 24
Show 20231+5745 STI2523 170 5.8 26
Show 20217+5717 TDT2204 306 2.1 30
Show 20242+5807 A 729 AB 252 2.8 42
Show 20242+5807 A 729 AC 69 36.4 42
Show 20289+5655 STI2535 AB 227 13.6 44
Show 20289+5655 TOB 187 AC 132 26.9 44
Show 20289+5655 TOB 187 AD 189 31.2 44
Show 20264+5638 STF2687 118 25.1 50
Show 20309+5747 TDT2333 138 2.4 51
Show 20298+5654 TDT2322 20 1.7 51
Show 20312+5714 A 872 178 0.2 51
Show 20305+5651 TDT2330 63 0.6 57
Show 20178+5717 KR 50 CD 355 1.7 60
Show 20312+5653 RAO 22 152 0.2 60
Show 20208+5639 STI2520 162 10.8 61
Show 20178+5717 KR 50 AB 129 2.1 61
Show 20178+5717 KR 50 AC 73 66.6 61
Show 20330+5712 A 739 195 4.6 66
Show 20306+5817 LDS1473 219 63.9 67
Show 20311+5814 LDS1474 209 10.2 67
Show 20169+5717 TDT2139 101 3.2 68
Show 20265+5619 BU 433 AB 207 7.6 70
Show 20265+5619 BU 433 AC 241 29.3 70
Show 20163+5735 TDT2133 246 3.1 72
Show 20175+5646 STI2517 151 16.1 75
Show 20258+5612 TDT2262 95 0.8 76
Show 20187+5823 TDT2157 37 0.8 77
Show 20343+5707 STI2541 205 10.6 77
Show 20300+5621 STI2537 343 12.7 78
Show 20354+5712 TDT2399 4 0.5 85
Show 20243+5602 TDT2239 256 1.7 85
Show 20227+5850 HJ 2965 82 15.1 86
Show 20164+5636 STI2516 95 4.4 88
Show 20185+5840 HJ 2956 233 9.1 91
Show 20295+5604 KUI 97 129 0.8 91
Show 20315+5611 HJ 1540 AB 346 22.7 93
Show 20315+5611 HJ 1540 AC 130 40.7 93
Show 20194+5607 STF2669 AB 259 23.4 93
Show 20194+5607 BU 1486 AC 162 18.4 93
Show 20356+5808 A 741 AB 157 1.3 93
Show 20356+5808 A 741 AC 211 19.8 93
Show 20303+5851 STI2538 333 12.1 94
Show 20268+5900 HJ 1522 88 22.6 95
Show 20342+5622 HJ 1546 246 17.4 99
Show 20337+5616 HJ 1545 180 15.5 101
Show 20256+5544 KPP4196 114 2.7 103
Show 20351+5624 HJ 1551 225 42.2 104
Show 20352+5622 HJ 1552 234 21.3 106
Show 20248+5534 TDS1071 184 0.9 114

 
 
WDS 20251+5727 : COMPONENTS
 
 
  A
B pa=166.8°
sep=7.47"
 
 
20251+5727 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 202508.64+572656.7 Mag 9.55 Spectral class G0 (yellow)
PmRA 16.00 PmDE 38.0 SAO 32558 Tycho2 3945-00833-1
HD 239402 DM BD+56 2414
Tycho2
Tycho2 3945-00833-1 Pflag RAmdeg 306.28604806 DEmdeg 57.44909009
PmRA 18.5 PmDE 37.5 E RAmdeg 14 E DEmdeg 13
E pmRA 1.5 E pmDE 1.5 EpRAm 1989.59 EpDEm 1989.95
Num 8 Q RAmdeg 1.9 Q DEmdeg 2.0 Q pmRA 1.9
Q pmDE 2.0 BTmag 10.200 E BTmag 0.028 VTmag 9.545
E VTmag 0.022 Prox 999 TYC T HIP
CCDM RAdeg 306.28596000 DEdeg 57.44900861 EpRA 1990 1.68
EpDE 1990 1.74 E RAdeg 14.9 E DEdeg 14.4 Posflg
Corr -0.1
SAO
SAO 32558 DelFlag RA1950 PmRA1950 0.0041
DE1950 PmDE1950 0.053 Vmag 9 SpType G0
Double code Source 38 CatNum 11346 DM BD+56 2414
DMcomp BDsup HD 239402 M HD 0
GC RA1950rad 5.34063521 DE1950rad 0.99980269 PmRA2000 0.0046
PmDE2000 0.051
 
 
20251+5727 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 202508.85+572649.4 Mag 14.1 PmRA 37.00
PmDE 25.0 Calc delta mag 4.55 Calc coord yes