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Current system
20546+3900
SEI 1308


Nearby doubles
11' : 20554+3907
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MLB 785

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MLB 887

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ES 1984

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ES 2055

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ALI 954

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A 1436

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MLB 958

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BKO 472

34' : 20528+3925
SEI1290

35' : 20519+3911
SEI1283

35' : 20569+3922
SEI1326



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

20546+3900 SEI 1308

 
 
20h 54m 39.46s +38° 59' 48.1" P.A. 93.00 sep 6.0 mag 10.83,12.70 Sp B9III
 
 
Coord 2000 20546+3900 Discov num SEI1308 Comp Coord arcsec 2000 20 54 39.46 +38 59 48.1
Date first 1896 Date last 2015 Obs 10
Pa first 96 Pa last 93.1 P.A. Now (θ) 93.1°
Sep first 5.7 Sep last 5.982 Sep. Now (ρ) 5.982"
Mag pri 10.83 Mag sec 12.70 delta mag (ΔM) 1.87 Spectral class B9III (blue-white)
Pri motion ra +001 Sec motion ra +002
Pri motion dec -005 Sec motion dec -002
Notes B (Blue magnitudes)
rPM=0.62
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3167-01800-1 Gaia DR2 1872807024714710528
 
 
WDS 20546+3900 SEI 1308 : 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
20546+3900 SEI1308 1998 5 93 6.0 10.83 12.70 B9III DB 205439.46+385948.1
20546+3900 SEI1308 2002 6 93 6.0 10.83 12.70 B9III DB 205439.46+385948.1
20546+3900 SEI1308 2010 7 99 5.3 10.83 12.70 B9III B 205439.46+385948.1
20546+3900 SEI1308 2015 7 93 6.0 10.83 12.70 B9III B 205439.46+385948.1

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

 
 
WDS 20546+3900 SEI 1308 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20546+3900 SEI 1308 : MEASURES
 
 
No records found.

 
 
WDS 20546+3900 : VIRTUAL EYEPIECE
 
 

20546+3900 SEI1308A mag 10.83 Sp B9III 20546+3900 SEI1308B sep 4.7 P.A. 94.00 mag 12.7 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 20546+3900 : ALADIN DSS IMAGE @ 20h 54m 39.46s +38° 59' 48.1"
 
 
 
 
WDS 20546+3900 SEI 1308 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20546+3900 SEI1308 distance=0' 20554+3907 TDT2629 distance=11' 20556+3901 HJ 1596 distance=12' 20556+3856 MLB 785 distance=12' 20549+3913 MLB 781 distance=14' 20555+3909 MLB 887 distance=14' 20554+3910 ES 1984 distance=15' 20546+3914 MLB 780AB distance=15' 20546+3914 BKO 470BC distance=15' 20558+3905 MLB 956 distance=15' 20550+3914 ES 1983 distance=16' 20556+3911 MLB 784 distance=17' 20552+3915 MLB 782AB distance=17' 20552+3915 SEI1313AC distance=17' 20556+3912 SEI1319 distance=17' 20562+3900 ES 2055 distance=18' 20530+3851 ALI 954 distance=21' 20566+3858 A 1436 distance=24' 20559+3921 MLB 958 distance=26' 20559+3922 MLB 957 distance=27' 20550+3929 SEI1311 distance=30' 20544+3929 BKO 469 distance=30' 20547+3929 GRV 395 distance=31' 20549+3933 BKO 471 distance=33' 20570+3842 SEI1327 distance=34' 20555+3932 BKO 472 distance=34' 20528+3925 SEI1290 distance=34' 20519+3911 SEI1283 distance=35' 20569+3922 SEI1326 distance=35' 20571+3920 BKO 473 distance=36' 20572+3920 BKO 474 distance=36' 20577+3848 ES 2056 distance=37' 20545+3937 BRT2281 distance=37' 20577+3849 SEI1332 distance=37' 20577+3845 DAM 222 distance=39' 20566+3932 SEI1325 distance=40' 20551+3941 MLB 886 distance=42' 20555+3940 MLB 783 distance=43' 20578+3923 BKO 475 distance=44' 20583+3904 SEI1340 distance=44' 20531+3940 SEI1292 distance=44' 20577+3926 SEI1334 distance=44' 20580+3918 BKO 476BD distance=44' 20580+3918 ES 1985AB distance=45' 20580+3918 SEI1338AC distance=45' 20509+3855 SEI1278 distance=45' 20578+3833 HJ 1600 distance=45' 20553+3944 SEI1315 distance=45' 20510+3915 SEI1279BC distance=45' 20510+3915 SEI1279AB distance=46' 20511+3837 SEI1281 distance=47' 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 20546+3900 SEI1308 93 6.0
Show 20554+3907 TDT2629 163 2.5 11
Show 20556+3901 HJ 1596 295 18.2 12
Show 20556+3856 MLB 785 5 6.4 12
Show 20549+3913 MLB 781 296 8.6 14
Show 20555+3909 MLB 887 246 10.4 14
Show 20554+3910 ES 1984 115 3.5 15
Show 20546+3914 MLB 780 AB 64 9.6 15
Show 20546+3914 BKO 470 BC 280 2.9 15
Show 20558+3905 MLB 956 115 5.0 15
Show 20550+3914 ES 1983 266 6.1 16
Show 20556+3911 MLB 784 25 4.6 17
Show 20552+3915 MLB 782 AB 344 10.3 17
Show 20552+3915 SEI1313 AC 260 26.9 17
Show 20556+3912 SEI1319 70 32.1 17
Show 20562+3900 ES 2055 293 7.6 18
Show 20530+3851 ALI 954 61 8.9 21
Show 20566+3858 A 1436 52 0.6 24
Show 20559+3921 MLB 958 169 5.3 26
Show 20559+3922 MLB 957 134 2.8 27
Show 20550+3929 SEI1311 247 8.8 30
Show 20544+3929 BKO 469 328 4.7 30
Show 20547+3929 GRV 395 211 59.7 31
Show 20549+3933 BKO 471 171 5.5 33
Show 20570+3842 SEI1327 89 4.6 34
Show 20555+3932 BKO 472 67 5.7 34
Show 20528+3925 SEI1290 222 14.2 34
Show 20519+3911 SEI1283 1 22.8 35
Show 20569+3922 SEI1326 14 26.6 35
Show 20571+3920 BKO 473 34 5.4 36
Show 20572+3920 BKO 474 24 3.3 36
Show 20577+3848 ES 2056 76 2.6 37
Show 20545+3937 BRT2281 73 3.6 37
Show 20577+3849 SEI1332 64 9.1 37
Show 20577+3845 DAM 222 290 6.3 39
Show 20566+3932 SEI1325 140 27.8 40
Show 20551+3941 MLB 886 141 7.0 42
Show 20555+3940 MLB 783 288 5.6 43
Show 20578+3923 BKO 475 265 5.5 44
Show 20583+3904 SEI1340 199 10.2 44
Show 20531+3940 SEI1292 205 24.8 44
Show 20577+3926 SEI1334 106 16.9 44
Show 20580+3918 BKO 476 BD 246 6.0 44
Show 20580+3918 ES 1985 AB 276 8.4 45
Show 20580+3918 SEI1338 AC 277 32.7 45
Show 20509+3855 SEI1278 135 25.5 45
Show 20578+3833 HJ 1600 152 23.7 45
Show 20553+3944 SEI1315 281 29.0 45
Show 20510+3915 SEI1279 BC 189 7.3 45
Show 20510+3915 SEI1279 AB 147 12.9 46
Show 20511+3837 SEI1281 102 8.6 47

 
 
WDS 20546+3900 : COMPONENTS
 
 
  A
B pa=94.0°
sep=4.65"
 
 
20546+3900 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 205439.46+385948.1 Mag 10.83 Spectral class B9III (blue-white)
PmRA 1.00 PmDE -5.0 Tycho2 3167-01800-1
Tycho2
Tycho2 3167-01800-1 Pflag RAmdeg 313.66435265 DEmdeg 38.99665257
PmRA -2.8 PmDE -1.1 E RAmdeg 25 E DEmdeg 22
E pmRA 1.5 E pmDE 1.5 EpRAm 1988.06 EpDEm 1989.22
Num 5 Q RAmdeg 1.8 Q DEmdeg 1.3 Q pmRA 1.7
Q pmDE 1.3 BTmag 10.827 E BTmag 0.037 VTmag 10.602
E VTmag 0.040 Prox 624 TYC T HIP
CCDM RAdeg 313.66436139 DEdeg 38.99665444 EpRA 1990 1.67
EpDE 1990 1.77 E RAdeg 25.5 E DEdeg 21.6 Posflg
Corr 0.0
 
 
20546+3900 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205439.86+385947.8 Mag 12.7 PmRA 2.00
PmDE -2.0 Calc delta mag 1.87 Calc coord yes