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Doubles in session


Current system
21308+3440
SEI 1522


Nearby doubles
7' : 21308+3446
COU1479

16' : 21295+3438
TDT2993

17' : 21320+3448
COU1480

26' : 21304+3504
HLD 45

32' : 21321+3412
HO 603AB

32' : 21284+3447
COU1638

36' : 21279+3439
TDT2980

37' : 21302+3404
HJ 1652

39' : 21334+3419
TDT3029

41' : 21299+3519
TDT2996

45' : 21326+3401
KPP1585

47' : 21272+3428
TDT2975

49' : 21291+3357
ES 2263

51' : 21267+3438
SEI1515

52' : 21318+3349
STF2802

54' : 21322+3349
HEI 882

55' : 21282+3355
TDT2982

56' : 21352+3431
TDT3044

57' : 21316+3535
TDS1132

58' : 21349+3505
GRV 478

58' : 21267+3413
ES 2261

60' : 21356+3446
COU1481

60' : 21271+3402
ES 2262

61' : 21261+3457
TDT2962

62' : 21322+3341
ES 2383

63' : 21318+3338
KUI 124



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21308+3440 SEI 1522

 
 
21h 30m 49.43s +34° 39' 17.3" P.A. 180.00 sep 23.7 mag 11.08,11.34
 
 
Coord 2000 21308+3440 Discov num SEI1522 Comp Coord arcsec 2000 21 30 49.43 +34 39 17.3
Date first 1894 Date last 2015 Obs 14
Pa first 178 Pa last 179.5 P.A. Now (θ) 179.5°
Sep first 22.8 Sep last 23.656 Sep. Now (ρ) 23.656"
Mag pri 11.08 Mag sec 11.34 delta mag (ΔM) 0.26 Spectral class
Pri motion ra -001 Sec motion ra -009
Pri motion dec -005 Sec motion dec -011
Notes
rPM=0.704
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2712-01437-1 Gaia DR2 1950473193200024960
 
 
WDS 21308+3440 SEI 1522 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Sei1908 Pa - Scheiner, J. 1908POPot..59.....S
Sei1908 +Po Pub. Obs. Potsdam 20, #59, 1908
Sei1913A Pa - Scheiner, J. 1913QB811.B8.......
Sei1913A cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Sei1932A Pa - Scheiner, J. 1932QB821.A43......
Sei1932A cited in ADS (Aitken Double Star Cat.), 1932
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21308+3440 SEI1522 1998 7 179 23.5 11.08 11.34 D 213049.43+343917.3
21308+3440 SEI1522 2008 8 179 24.0 11.08 11.34 D 213049.43+343917.3
21308+3440 SEI1522 2010 10 180 23.5 11.08 11.34 213049.43+343917.3
21308+3440 SEI1522 2015 11 180 23.7 11.08 11.34 213049.43+343917.3

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

 
 
WDS 21308+3440 SEI 1522 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21308+3440 SEI 1522 : MEASURES
 
 
No records found.

 
 
WDS 21308+3440 : VIRTUAL EYEPIECE
 
 

21308+3440 SEI1522A mag 11.08 21308+3440 SEI1522B sep 23.7 P.A. 179.60 mag 11.34 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 21308+3440 : ALADIN DSS IMAGE @ 21h 30m 49.43s +34° 39' 17.3"
 
 
 
 
WDS 21308+3440 SEI 1522 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21308+3440 SEI1522 distance=0' 21308+3446 COU1479 distance=7' 21295+3438 TDT2993 distance=16' 21320+3448 COU1480 distance=17' 21304+3504 HLD 45 distance=26' 21321+3412 HO 603BC distance=32' 21321+3412 HO 603AB distance=32' 21284+3447 COU1638 distance=32' 21279+3439 TDT2980 distance=36' 21302+3404 HJ 1652 distance=37' 21334+3419 TDT3029 distance=39' 21299+3519 TDT2996 distance=41' 21326+3401 KPP1585 distance=45' 21272+3428 TDT2975 distance=47' 21291+3357 ES 2263 distance=49' 21267+3438 SEI1515 distance=51' 21318+3349 STF2802 distance=52' 21322+3349 HEI 882 distance=54' 21282+3355 TDT2982 distance=55' 21352+3431 TDT3044 distance=56' 21316+3535 TDS1132 distance=57' 21349+3505 GRV 478 distance=58' 21267+3413 ES 2261 distance=58' 21356+3446 COU1481 distance=60' 21271+3402 ES 2262 distance=60' 21261+3457 TDT2962 distance=61' 21322+3341 ES 2383 distance=62' 21318+3338 KUI 124 distance=63' 21339+3530 TDT3033 distance=64' 21358+3423 GYL 62 distance=64' 21257+3422 GRV 465 distance=65' 21254+3446 TDS1128 distance=67' 21300+3549 TDT2998 distance=71' 21328+3546 SEI1524 distance=71' 21261+3529 POP 49 distance=77' 21268+3337 ES 2382 distance=77' 21336+3325 TOB 222AB distance=82' 21336+3325 TOB 222AC distance=82' 21336+3325 TOB 222AD distance=82' 21336+3325 GYL 59BD distance=82' 21262+3339 TDT2964 distance=84' 21267+3329 TDT2973 distance=87' 21353+3549 GRV 479 distance=90' 21350+3324 TDT3042 distance=92' 21258+3329 GYL 56 distance=95' 21340+3605 TDT3034 distance=95' 21382+3514 SEI1528 distance=97' 21317+3302 GYL 63 distance=98' 21242+3358 J 2346 distance=98' 21265+3315 HJ 935BC distance=99' 21265+3315 HJ 935AB distance=100' 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 21308+3440 SEI1522 180 23.7
Show 21308+3446 COU1479 143 0.7 7
Show 21295+3438 TDT2993 246 0.5 16
Show 21320+3448 COU1480 204 1.7 17
Show 21304+3504 HLD 45 198 1.3 26
Show 21321+3412 HO 603 BC 276 3.6 32
Show 21321+3412 HO 603 AB 251 80.6 32
Show 21284+3447 COU1638 226 1.3 32
Show 21279+3439 TDT2980 235 2.3 36
Show 21302+3404 HJ 1652 26 15.4 37
Show 21334+3419 TDT3029 133 2.3 39
Show 21299+3519 TDT2996 122 1.3 41
Show 21326+3401 KPP1585 342 12.0 45
Show 21272+3428 TDT2975 259 2.1 47
Show 21291+3357 ES 2263 28 2.8 49
Show 21267+3438 SEI1515 43 10.6 51
Show 21318+3349 STF2802 9 3.9 52
Show 21322+3349 HEI 882 182 2.0 54
Show 21282+3355 TDT2982 358 1.8 55
Show 21352+3431 TDT3044 63 0.6 56
Show 21316+3535 TDS1132 306 1.4 57
Show 21349+3505 GRV 478 134 28.6 58
Show 21267+3413 ES 2261 155 4.1 58
Show 21356+3446 COU1481 178 0.5 60
Show 21271+3402 ES 2262 74 1.3 60
Show 21261+3457 TDT2962 238 2.4 61
Show 21322+3341 ES 2383 44 5.2 62
Show 21318+3338 KUI 124 143 4.2 63
Show 21339+3530 TDT3033 150 0.6 64
Show 21358+3423 GYL 62 175 58.7 64
Show 21257+3422 GRV 465 6 51.1 65
Show 21254+3446 TDS1128 18 1.3 67
Show 21300+3549 TDT2998 209 2.0 71
Show 21328+3546 SEI1524 130 24.8 71
Show 21261+3529 POP 49 205 4.8 77
Show 21268+3337 ES 2382 257 7.7 77
Show 21336+3325 TOB 222 AB 119 20.8 82
Show 21336+3325 TOB 222 AC 335 22.1 82
Show 21336+3325 TOB 222 AD 68 26.4 82
Show 21336+3325 GYL 59 BD 17 21.0 82
Show 21262+3339 TDT2964 258 0.4 84
Show 21267+3329 TDT2973 330 0.5 87
Show 21353+3549 GRV 479 117 52.1 90
Show 21350+3324 TDT3042 53 1.0 92
Show 21258+3329 GYL 56 3 16.3 95
Show 21340+3605 TDT3034 125 0.6 95
Show 21382+3514 SEI1528 64 22.0 97
Show 21317+3302 GYL 63 306 15.7 98
Show 21242+3358 J 2346 229 4.1 98
Show 21265+3315 HJ 935 BC 52 1.7 99
Show 21265+3315 HJ 935 AB 16 12.9 100

 
 
WDS 21308+3440 : COMPONENTS
 
 
  A
B pa=179.6°
sep=23.66"
 
 
21308+3440 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 213049.43+343917.3 Mag 11.08 PmRA -1.00
PmDE -5.0 Tycho2 2712-01437-1
Tycho2
Tycho2 2712-01437-1 Pflag RAmdeg 322.70595220 DEmdeg 34.65480129
PmRA 0.6 PmDE -1.7 E RAmdeg 30 E DEmdeg 26
E pmRA 1.7 E pmDE 1.7 EpRAm 1987.44 EpDEm 1988.69
Num 6 Q RAmdeg 1.6 Q DEmdeg 1.1 Q pmRA 1.6
Q pmDE 1.1 BTmag 11.423 E BTmag 0.046 VTmag 11.078
E VTmag 0.051 Prox 235 TYC T HIP
CCDM RAdeg 322.70594889 DEdeg 34.65480611 EpRA 1990 1.48
EpDE 1990 1.62 E RAdeg 31.1 E DEdeg 27.3 Posflg
Corr 0.2
 
 
21308+3440 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 213049.44+343853.6 Mag 11.34 PmRA -9.00
PmDE -11.0 Tycho2 2712-01456-1 Calc delta mag 0.26 Calc coord yes
Tycho2
Tycho2 2712-01456-1 Pflag RAmdeg 322.70604959 DEmdeg 34.64826882
PmRA -7.2 PmDE -7.9 E RAmdeg 38 E DEmdeg 33
E pmRA 1.7 E pmDE 1.7 EpRAm 1985.00 EpDEm 1987.09
Num 6 Q RAmdeg 1.8 Q DEmdeg 0.7 Q pmRA 1.8
Q pmDE 0.7 BTmag 11.711 E BTmag 0.054 VTmag 11.341
E VTmag 0.064 Prox 235 TYC T HIP
CCDM RAdeg 322.70606694 DEdeg 34.64828806 EpRA 1990 1.49
EpDE 1990 1.64 E RAdeg 39.6 E DEdeg 34.2 Posflg
Corr 0.2