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Doubles in session


Current system
20104+3644
SEI 946 AC


Nearby doubles
1' : 20103+3643
SMR 77

3' : 20102+3644
ES 87

5' : 20108+3646
SEI 958

8' : 20110+3642
SEI 962

9' : 20108+3637
TDT2052

9' : 20108+3652
SEI 957

10' : 20105+3635
SEI 948

11' : 20108+3654
SEI 956

14' : 20107+3657
SEI 953

14' : 20094+3651
BNW 2AB

15' : 20115+3639
SEI 974AB

18' : 20098+3629
COU2413

18' : 20117+3654
SLE 957

18' : 20119+3642
TDT2077

19' : 20115+3630
SEI 971AB

19' : 20107+3703
STT 399AB

20' : 20094+3630
SEI 928AB

20' : 20120+3640
SEI 989

20' : 20091+3657
SEI 921

21' : 20111+3626
ALI 414

24' : 20085+3648
SEI 913

24' : 20095+3623
ALI 409

25' : 20090+3626
SEI 920

27' : 20111+3619
RAO 428

27' : 20116+3621
SEI 976

27' : 20117+3706
SEI 980



Selections
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Binary Systems
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Quadruple Systems
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Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20104+3644 SEI 946 AC

 
 
20h 10m 26.44s +36° 44' 01.2" P.A. 64.00 sep 13.7 mag 9.50,11.00 Sp B8
 
 
Coord 2000 20104+3644 Discov num SEI 946 Comp AC Coord arcsec 2000 20 10 26.44 +36 44 01.2
Date first 1896 Date last 2014 Obs 5
Pa first 72 Pa last 63.9 P.A. Now (θ) 63.9°
Sep first 16.3 Sep last 13.697 Sep. Now (ρ) 13.697"
Mag pri 9.50 Mag sec 11.00 delta mag (ΔM) 1.5 Spectral class B8 (blue-white)
Pri motion ra +009 Sec motion ra
Pri motion dec +000 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
20104+3644 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 10 26 +36 44 01 SEI 945 AB 2021 13 274 5.9 9.50 11.00 1.50
Show 20 10 26 +36 44 01 SEI 946 AC 2014 5 64 13.7 9.50 11.00 1.50 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2059246847770108160
 
 
WDS 20104+3644 SEI 946 AC : NOTES
 
 
discov_num notes refcode
SEI 946 AC. Very faint object seen on POSS plate near purported position of C
component; uncertain whether Scheiner's tertiary is a variable star or
a flaw on AC Potsdam plate.
C may be at 292 deg & 15.1" with a 120 deg error by Scheiner. Dam2011
The alternate measure for AC by Scheiner matches 20105+3614 = SEI 947. Smr2022
 
 
REFERENCES
 
 
refcode metd author reference
Dam2011 j Damm, F. ...................
Dam2011 private communication, 2011
Smr2022 C Schlimmer, J.S. 2022JDSO...18..322S
Smr2022 JDSO 18, 322, 2022
 
 
DISCOVERER
 
 
idgroup discov author
1 SEI Scheiner, J.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20104+3644 SEI 946 AC 1896 1 72 16.3 9.50 11.00 N 201026.44+364401.2
20104+3644 SEI 946 AC 1998 2 64 13.6 9.50 11.00 N 201026.44+364401.2
20104+3644 SEI 946 AC 2014 5 64 13.7 9.50 11.00 B8 N 201026.44+364401.2

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

 
 
WDS 20104+3644 SEI 946 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20104+3644 SEI 946 AC : MEASURES
 
 
No records found.

 
 
WDS 20104+3644 : VIRTUAL EYEPIECE
 
 

20104+3644 SEI 945A mag 9.5 Sp B8 20104+3644 SEI 945B sep 4.7 P.A. 275.00 mag 11 20104+3644 SEI 946C sep 11.6 P.A. 58.60 mag 11 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 20104+3644 : ALADIN DSS IMAGE @ 20h 10m 26.44s +36° 44' 01.2"
 
 
 
 
WDS 20104+3644 SEI 946 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20104+3644 SEI 946AC distance=0' 20103+3643 SMR 77 distance=1' 20102+3644 ES 87 distance=3' 20108+3646 SEI 958 distance=5' 20110+3642 SEI 962 distance=8' 20108+3637 TDT2052 distance=9' 20108+3652 SEI 957 distance=9' 20105+3635 SEI 948 distance=10' 20108+3654 SEI 956 distance=11' 20107+3657 SEI 953 distance=14' 20094+3651 BNW 2AB distance=14' 20094+3651 CIA 19Aa,Ab distance=14' 20115+3639 SEI 974AB distance=15' 20115+3639 TOB 175AC distance=15' 20115+3639 TOB 175AD distance=15' 20098+3629 COU2413 distance=18' 20117+3654 SLE 957 distance=18' 20119+3642 TDT2077 distance=18' 20094+3630 BKO 96MN distance=19' 20115+3630 SEI 971AB distance=19' 20115+3630 SLE 954AC distance=19' 20115+3630 SLE 954AD distance=19' 20094+3630 BKO 96DL distance=19' 20107+3703 STT 399AB distance=19' 20107+3703 WAL 129AC distance=19' 20094+3630 SEI 928AB distance=20' 20094+3630 SEI 927AC distance=20' 20094+3630 SEI 926AD distance=20' 20094+3630 ABH 131AE distance=20' 20094+3630 ABH 131AF distance=20' 20094+3630 ABH 131AG distance=20' 20094+3630 ABH 131AH distance=20' 20094+3630 ABH 131AI distance=20' 20094+3630 BKO 96AJ distance=20' 20094+3630 BKO 96AK distance=20' 20094+3630 BKO 96AM distance=20' 20120+3640 SEI 989 distance=20' 20091+3657 SEI 921 distance=20' 20111+3626 ALI 414 distance=21' 20085+3648 SEI 913 distance=24' 20095+3623 ALI 409 distance=24' 20090+3626 SEI 920 distance=25' 20111+3619 RAO 428 distance=27' 20116+3621 SEI 976 distance=27' 20117+3706 SEI 980 distance=27' 20101+3617 SEI 939AB distance=28' 20101+3617 WSI 152AC distance=28' 20126+3639 SLE 962 distance=28' 20127+3645 SEI1006AB distance=28' 20127+3645 SLE 964AC distance=28' 20127+3642 SEI1007 distance=28' 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 20104+3644 SEI 945 AB 274 5.9
Show 20104+3644 SEI 946 AC 64 13.7
Show 20103+3643 SMR 77 92 2.9 1
Show 20102+3644 ES 87 298 8.5 3
Show 20108+3646 SEI 958 323 21.4 5
Show 20110+3642 SEI 962 289 23.3 8
Show 20108+3637 TDT2052 142 2.3 9
Show 20108+3652 SEI 957 76 28.3 9
Show 20105+3635 SEI 948 88 21.7 10
Show 20108+3654 SEI 956 257 12.0 11
Show 20107+3657 SEI 953 301 17.4 14
Show 20094+3651 BNW 2 AB 124 81.9 14
Show 20094+3651 CIA 19 Aa,Ab 164 0.0 14
Show 20115+3639 SEI 974 AB 7 18.1 15
Show 20115+3639 TOB 175 AC 95 53.3 15
Show 20115+3639 TOB 175 AD 123 36.6 15
Show 20098+3629 COU2413 91 0.8 18
Show 20117+3654 SLE 957 335 6.7 18
Show 20119+3642 TDT2077 49 0.8 18
Show 20094+3630 BKO 96 MN 257 17.6 19
Show 20115+3630 SEI 971 AB 14 14.1 19
Show 20115+3630 SLE 954 AC 294 24.1 19
Show 20115+3630 SLE 954 AD 357 22.3 19
Show 20094+3630 BKO 96 DL 18 14.9 19
Show 20107+3703 STT 399 AB 278 4.6 19
Show 20107+3703 WAL 129 AC 271 26.9 19
Show 20094+3630 SEI 928 AB 132 10.3 20
Show 20094+3630 SEI 927 AC 324 18.8 20
Show 20094+3630 SEI 926 AD 349 29.2 20
Show 20094+3630 ABH 131 AE 297 9.8 20
Show 20094+3630 ABH 131 AF 267 10.7 20
Show 20094+3630 ABH 131 AG 282 16.9 20
Show 20094+3630 ABH 131 AH 154 67.2 20
Show 20094+3630 ABH 131 AI 100 99.4 20
Show 20094+3630 BKO 96 AJ 50 17.4 20
Show 20094+3630 BKO 96 AK 29 34.9 20
Show 20094+3630 BKO 96 AM 355 81.1 20
Show 20120+3640 SEI 989 153 29.4 20
Show 20091+3657 SEI 921 336 25.7 20
Show 20111+3626 ALI 414 215 11.6 21
Show 20085+3648 SEI 913 46 5.3 24
Show 20095+3623 ALI 409 84 13.7 24
Show 20090+3626 SEI 920 51 15.0 25
Show 20111+3619 RAO 428 292 1.0 27
Show 20116+3621 SEI 976 3 8.2 27
Show 20117+3706 SEI 980 185 23.8 27
Show 20101+3617 SEI 939 AB 217 26.3 28
Show 20101+3617 WSI 152 AC 31 17.8 28
Show 20126+3639 SLE 962 21 8.5 28
Show 20127+3645 SEI1006 AB 306 17.1 28
Show 20127+3645 SLE 964 AC 332 11.5 28

 
 
WDS 20104+3644 : COMPONENTS
 
 
  A B
B pa=275.0°
sep=4.73"
 
C pa=58.6°
sep=11.55"
pa=68.9°
sep=15.61"
 
 
20104+3644 A
 
 
Coord arcsec 2000 201026.44+364401.2 Mag 9.5 Spectral class B8 (blue-white) PmRA -1.00
PmDE -7.0
 
 
20104+3644 B
 
 
Coord arcsec 2000 201026.05+364401.6 Mag 11 PmRA 9.00 PmDE -7.0
Tycho2 2683-02793-1 Calc delta mag 1.5 Calc coord yes
Tycho2
Tycho2 2683-02793-1 Pflag RAmdeg 302.61008113 DEmdeg 36.73324675
PmRA -1.6 PmDE -8.3 E RAmdeg 55 E DEmdeg 50
E pmRA 2.3 E pmDE 2.2 EpRAm 1982.85 EpDEm 1983.81
Num 4 Q RAmdeg 0.3 Q DEmdeg 0.9 Q pmRA 0.3
Q pmDE 0.9 BTmag 11.713 E BTmag 0.077 VTmag 11.419
E VTmag 0.097 Prox 999 TYC HIP
CCDM RAdeg 302.61008583 DEdeg 36.73326500 EpRA 1990 1.56
EpDE 1990 1.67 E RAdeg 58.8 E DEdeg 52.8 Posflg
Corr 0.1
 
 
20104+3644 C
 
 
Coord arcsec 2000 201027.26+364407.2 Mag 11 Calc delta mag 1.5 Calc coord yes