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Doubles in session


Current system
21072+3958
TDT 2765 Aa,Ab


Nearby doubles
15' : 21061+4001
COU2224

21' : 21086+3942
ALI1154

24' : 21068+4021
ES 1989

30' : 21098+4001
GRV 430AB

31' : 21054+3937
CRB 137

33' : 21099+4013
COU1968

34' : 21058+3929
A 2691AB

35' : 21050+4021
COU2135

36' : 21105+4000
ALI1155

48' : 21102+3923
ALI 963

49' : 21031+3959
LDS2483AB

50' : 21042+3924
SEI1389

51' : 21051+3914
ES 1987

53' : 21029+3946
SEI1379

53' : 21071+3905
ALI 960

54' : 21120+4000
TDT2817

55' : 21032+4024
ES 1986

55' : 21109+4034
ES 255

56' : 21112+3925
COU1969

58' : 21110+3919
MLB 891

58' : 21082+4055
AG 414

59' : 21118+3931
ES 1992

59' : 21094+3905
GUR 1

59' : 21047+3908
SEI1393

60' : 21111+3918
MLB 892

61' : 21073+3857
MLB 889



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.

21072+3958 TDT 2765 Aa,Ab

 
 
21h 07m 19.64s +39° 57' 51.0" P.A. 149.00 sep 0.4 mag 11.31,11.56 Sp A0IV
 
 
Coord 2000 21072+3958 Discov num TDT2765 Comp Aa,Ab Coord arcsec 2000 21 07 19.64 +39 57 51.0
Date first 1991 Date last 1991 Obs 1
Pa first 149 Pa last 148.8 P.A. Now (θ) 148.8°
Sep first 0.4 Sep last 0.44 Sep. Now (ρ) 0.44"
Mag pri 11.31 Mag sec 11.56 delta mag (ΔM) 0.25 Spectral class A0IV (white)
Pri motion ra +001 Sec motion ra +001
Pri motion dec -002 Sec motion dec -002
Notes
Nature of this double is uncertain.
 
 
21072+3958 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 07 20 +39 57 51 TDT 2765 Aa,Ab 1991 1 149 0.4 11.31 11.56 0.25 <===
Show 21 07 20 +39 57 51 ES 1990 AB 2014 7 38 5.8 10.86 12.78 1.92
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3172-01586-1 Gaia DR2 1968427148627074688
 
 
WDS 21072+3958 TDT 2765 Aa,Ab : 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
21072+3958 TDT2765 Aa,Ab 1991 1 149 0.4 11.31 11.56 210719.64+395751.0

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

 
 
WDS 21072+3958 TDT 2765 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21072+3958 TDT 2765 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 21072+3958 : VIRTUAL EYEPIECE
 
 

21072+3958 ES 1990A mag 10.86 Sp A0IV 21072+3958 TDT2765Ab sep 0.4 P.A. 155.10 mag 11.56 21072+3958 ES 1990B sep 5.3 P.A. 31.30 mag 12.78 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 21072+3958 : ALADIN DSS IMAGE @ 21h 07m 19.64s +39° 57' 51.0"
 
 
 
 
WDS 21072+3958 TDT 2765 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21072+3958 TDT2765Aa,Ab distance=0' 21061+4001 COU2224 distance=15' 21086+3942 ALI1154 distance=21' 21068+4021 ES 1989 distance=24' 21098+4001 GRV 430AB distance=30' 21098+4001 GRV 429AC distance=30' 21054+3937 CRB 137 distance=31' 21099+4013 COU1968 distance=33' 21058+3929 A 2691CD distance=34' 21058+3929 A 2691AB distance=34' 21058+3929 A 2691AC distance=34' 21050+4021 COU2135 distance=35' 21105+4000 ALI1155 distance=36' 21102+3923 ALI 963 distance=48' 21031+3959 LDS2483AB distance=49' 21042+3924 SEI1389 distance=50' 21051+3914 ES 1987 distance=51' 21029+3946 SEI1379 distance=53' 21071+3905 ALI 960 distance=53' 21120+4000 TDT2817 distance=54' 21032+4024 ES 1986 distance=55' 21109+4034 ES 255 distance=55' 21112+3925 COU1969 distance=56' 21110+3919 MLB 891 distance=58' 21082+4055 AG 414 distance=58' 21118+3931 ES 1992 distance=59' 21094+3905 GUR 1 distance=59' 21047+3908 SEI1393 distance=59' 21111+3918 MLB 892 distance=60' 21073+3857 MLB 889 distance=61' 21023+3931 WRD 4ED distance=63' 21023+3931 WRD 4EH distance=63' 21129+4003 LDS2495 distance=64' 21023+3931 H 4 113AB distance=64' 21023+3931 H 4 113AC distance=64' 21023+3931 SMY 6AE distance=64' 21023+3931 WRD 4AF distance=64' 21023+3931 SMY 6AD distance=64' 21023+3931 WRD 4AG distance=64' 21023+3931 FYM 114AI distance=64' 21054+4058 TDT2732 distance=65' 21074+3853 MLB 890 distance=65' 21071+3852 MLB 888 distance=66' 21108+3906 GUR 4 distance=66' 21044+4057 ROE 44 distance=68' 21097+3856 COU1967 distance=68' 21014+3948 SEI1370 distance=69' 21037+4053 LDS2485 distance=70' 21012+3949 SEI1369 distance=72' 21129+4033 ES 256 distance=73' 21110+3859 GUR 5 distance=73' 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 21072+3958 TDT2765 Aa,Ab 149 0.4
Show 21072+3958 ES 1990 AB 38 5.8
Show 21061+4001 COU2224 67 0.4 15
Show 21086+3942 ALI1154 251 12.5 21
Show 21068+4021 ES 1989 174 6.0 24
Show 21098+4001 GRV 430 AB 351 47.1 30
Show 21098+4001 GRV 429 AC 168 48.5 30
Show 21054+3937 CRB 137 352 29.3 31
Show 21099+4013 COU1968 104 0.2 33
Show 21058+3929 A 2691 CD 275 6.4 34
Show 21058+3929 A 2691 AB 217 2.7 34
Show 21058+3929 A 2691 AC 313 27.4 34
Show 21050+4021 COU2135 351 0.2 35
Show 21105+4000 ALI1155 305 13.4 36
Show 21102+3923 ALI 963 291 6.9 48
Show 21031+3959 LDS2483 AB 41 30.6 49
Show 21042+3924 SEI1389 61 18.2 50
Show 21051+3914 ES 1987 354 7.0 51
Show 21029+3946 SEI1379 7 19.4 53
Show 21071+3905 ALI 960 110 12.9 53
Show 21120+4000 TDT2817 335 0.6 54
Show 21032+4024 ES 1986 21 4.2 55
Show 21109+4034 ES 255 34 4.6 55
Show 21112+3925 COU1969 216 0.1 56
Show 21110+3919 MLB 891 253 8.7 58
Show 21082+4055 AG 414 108 5.3 58
Show 21118+3931 ES 1992 203 3.1 59
Show 21094+3905 GUR 1 150 8.3 59
Show 21047+3908 SEI1393 132 25.7 59
Show 21111+3918 MLB 892 188 4.3 60
Show 21073+3857 MLB 889 5 7.0 61
Show 21023+3931 WRD 4 ED 230 77.7 63
Show 21023+3931 WRD 4 EH 159 37.4 63
Show 21129+4003 LDS2495 173 5.0 64
Show 21023+3931 H 4 113 AB 299 18.9 64
Show 21023+3931 H 4 113 AC 248 26.7 64
Show 21023+3931 SMY 6 AE 87 95.7 64
Show 21023+3931 WRD 4 AF 223 101.8 64
Show 21023+3931 SMY 6 AD 141 57.0 64
Show 21023+3931 WRD 4 AG 230 95.0 64
Show 21023+3931 FYM 114 AI 277 41.1 64
Show 21054+4058 TDT2732 64 0.7 65
Show 21074+3853 MLB 890 250 5.3 65
Show 21071+3852 MLB 888 55 4.0 66
Show 21108+3906 GUR 4 106 5.2 66
Show 21044+4057 ROE 44 43 7.2 68
Show 21097+3856 COU1967 192 0.8 68
Show 21014+3948 SEI1370 141 20.7 69
Show 21037+4053 LDS2485 226 15.3 70
Show 21012+3949 SEI1369 309 4.5 72
Show 21129+4033 ES 256 281 4.5 73

 
 
WDS 21072+3958 : COMPONENTS
 
 
  A Ab
Ab pa=155.1°
sep=0.41"
 
B pa=31.3°
sep=5.30"
pa=27.7°
sep=5.54"
 
 
21072+3958 A
 
 
Coord arcsec 2000 210719.64+395751.0 Mag 10.86 Spectral class A0IV (white) PmRA 0.00
PmDE -7.0 Tycho2 3172-01586-1 ADS 14663 DM BD+39 4442
Tycho2
Tycho2 3172-01586-1 Pflag RAmdeg 316.83189397 DEmdeg 39.96412000
PmRA 1.4 PmDE -1.7 E RAmdeg 26 E DEmdeg 24
E pmRA 1.9 E pmDE 1.8 EpRAm 1989.56 EpDEm 1989.77
Num 3 Q RAmdeg 1.0 Q DEmdeg 0.0 Q pmRA 0.9
Q pmDE 0.1 BTmag 10.855 E BTmag 0.038 VTmag 10.690
E VTmag 0.046 Prox 999 TYC T HIP
CCDM RAdeg 316.83189000 DEdeg 39.96412389 EpRA 1990 1.63
EpDE 1990 1.71 E RAdeg 26.1 E DEdeg 24.1 Posflg
Corr 0.1
 
 
21072+3958 Ab
 
 
Coord arcsec 2000 210719.66+395750.6 Mag 11.56 PmRA 1.00 PmDE -2.0
Calc delta mag 0.25 Calc coord yes
 
 
21072+3958 B
 
 
Coord arcsec 2000 210719.88+395755.5 Mag 12.78 PmRA 0.00 PmDE 2.0
Calc delta mag 1.47 Calc coord yes