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Doubles in session


Current system
21344+6644
STFA 57 AB
HD 205741


Nearby doubles
26' : 21385+6636
LDS4902

34' : 21338+6611
LDS4897

36' : 21293+6703
HU 964

37' : 21365+6718
KPP4238

39' : 21326+6607
HJ 1665

40' : 21278+6649
DCH 115

43' : 21372+6604
HDS3077

45' : 21334+6728
WHC 23

56' : 21338+6549
AZC 181

62' : 21331+6543
TDT3026

64' : 21444+6621
MLB 269

64' : 21430+6606
WNT 1AB

66' : 21359+6539
MLR 83AB

68' : 21238+6619
LDS4884

69' : 21290+6744
TDT2986

70' : 21309+6537
SKF2614

75' : 21288+6537
OSO 147AB

78' : 21356+6526
TOI2050

83' : 21208+6704
LDS4880

84' : 21481+6625
MLB 270

86' : 21311+6521
TDT3005

88' : 21491+6648
STF2836AB

88' : 21282+6525
HJ 1656AB

89' : 21195+6647
TDT2902

89' : 21455+6745
HU 970

90' : 21459+6548
HJ 1696



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.

21344+6644 STFA 57 AB (HD 205741)

 
 
21h 34m 25.84s +66° 43' 35.5" P.A. 25.00 sep 183.1 mag 7.07,7.18 Sp K1III dist. 167.22 pc (545.47 l.y.)
 
 
Coord 2000 21344+6644 Discov num STFA 57 Comp AB Coord arcsec 2000 21 34 25.84 +66 43 35.5
Date first 1836 Date last 2016 Obs 30
Pa first 26 Pa last 25.2 P.A. Now (θ) 25.2°
Sep first 179.0 Sep last 183.1 Sep. Now (ρ) 183.1"
Mag pri 7.07 Mag sec 7.18 delta mag (ΔM) 0.11 Spectral class K1III (yellow-orange)
Pri motion ra -025 Sec motion ra -003
Pri motion dec -031 Sec motion dec -018
Notes N (See Notes)
rPM=0.642
Nature of this double is uncertain.
 
 
21344+6644 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 205741 19510 21 34 26 +66 43 36 STFA 57 AB 2016 30 25 183.1 7.07 7.18 0.11 <===
Show 19510 21 34 26 +66 43 36 STFA 57 AC 2015 9 346 126.1 7.07 11.90 4.83
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 205741 Constellation Cepheus SAO 19510 HIP 106515
Tycho2 4261-00422-1 Gaia DR2 2221267239073926784 HD 205741 GC 30237
BD BD+66 1415 Distance 167.22 Distance ly 545.47
 
 
WDS 21344+6644 STFA 57 AB (HD 205741) : NOTES
 
 
discov_num notes refcode
STFA 57 B is BD+66@1416.
 
 
REFERENCES
 
 
refcode metd author reference
STFA (F. Struve DD - Appendix list #1) ...................
STFB (F. Struve DD - Appendix list #2) ...................
StF1833A Ma - Struve, F.G.W. 1833MmRAS...5...13H
StF1833A +Mc cited by Herschel (MemRAS 5, 13, 1833)
StF1833B Ma - Struve, F.G.W. 1833AN.....10..389B
StF1833B cited by Bessel (AN 10, 389, 1833)
StF1837 Ma - Struve, F.G.W. 1837AN.....14...249
StF1837 Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837 (Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A Ma - Struve, F.G.W. 1844QB43.S66.......
StF1844A cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A Ma - Struve, F.G.W. .
StF1852A cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A Ma - Struve, F.G.W. 1865AN.....64...81E
StF1865A cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A Ma - Struve, F.G.W. 1875AN.....85..323D
StF1875A cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878 Ma - Struve, F.G.W. .
StF1878 Pulkova Observations 9, 1878
StF1878B Ma - Struve, F.G.W. 1878Obs.....2..239G
StF1878B cited by Gledhill (Obs 2, 239, 1878)
StF1880A Ma - Struve, F.G.W. 1880Obs.....3..535G
StF1880A cited by Gledhill (Obs 3, 535, 1880)
StF1906A Ma - Struve, F.G.W. 1906QB821.B972.....
StF1906A cited in BDS (Burnham Double Star Cat.), 1906
StF1906B Ma - Struve, F.G.W. 1906MmRAS..56....1L
StF1906B cited by Lewis (MemRAS 56, 1, 1906)
StF1922A Ma - Struve, F.G.W. 1922AN....216...49R
StF1922A cited by Rabe (AN 216, 49, 1922)
StF1932A Ma - Struve, F.G.W. 1932QB821.A43......
StF1932A cited in ADS (Aitken Double Star Cat.), 1932
StF2002 - - Weis, J.
StF2002 F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002 USNO Library : QB 821 .S8 W49 2002
StF2022 - - email note from Jan Weis: 6 July 2022
StF9999 Ma - Struve, F.G.W. ...................
StF9999 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
21344+6644 STFA 57 AB 1999 26 26 182.6 7.07 7.18 K1III N D 213425.84+664335.5
21344+6644 STFA 57 AB 2003 29 25 182.8 7.07 7.18 K1III N D 213425.84+664335.5
21344+6644 STFA 57 AB 2016 29 25 183.1 7.07 7.18 K1III N 213425.84+664335.5

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

 
 
WDS 21344+6644 STFA 57 AB (HD 205741) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21344+6644 STFA 57 AB (HD 205741) : MEASURES
 
 
No records found.

 
 
WDS 21344+6644 (HD 205741) : VIRTUAL EYEPIECE
 
 

21344+6644 STFA 57A mag 7.07 Sp K1III 21344+6644 STFA 57B sep 168.5 P.A. 10.50 mag 7.18 21344+6644 STFA 57C sep 122.9 P.A. 354.30 mag 11.9 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 21344+6644 (HD 205741) : ALADIN DSS IMAGE @ 21h 34m 25.84s +66° 43' 35.5"
 
 
 
 
WDS 21344+6644 STFA 57 AB (HD 205741) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21344+6644 STFA 57AB distance=1' 21344+6644 STFA 57AC distance=1' 21385+6636 LDS4902 distance=26' 21338+6611 LDS4897 distance=34' 21293+6703 HU 964 distance=36' 21365+6718 KPP4238 distance=37' 21326+6607 HJ 1665 distance=39' 21278+6649 DCH 115 distance=40' 21372+6604 HDS3077 distance=43' 21334+6728 WHC 23 distance=45' 21338+6549 AZC 181 distance=56' 21331+6543 TDT3026 distance=62' 21444+6621 MLB 269 distance=64' 21430+6606 WNT 1AB distance=64' 21430+6606 WNT 1AC distance=64' 21430+6606 WNT 1AD distance=64' 21430+6606 WNT 1AE distance=64' 21430+6606 WNT 1AF distance=64' 21430+6606 LI 8AG distance=64' 21430+6606 KAT 1AH distance=64' 21430+6606 KAT 1AI distance=64' 21430+6606 KAT 1AJ distance=64' 21430+6606 KAT 1AK distance=64' 21430+6606 KAT 1AL distance=64' 21359+6539 MLR 83AB distance=66' 21359+6539 MLR 83AB,C distance=66' 21238+6619 LDS4884 distance=68' 21290+6744 TDT2986 distance=69' 21309+6537 SKF2614 distance=70' 21288+6537 OSO 147AB distance=75' 21288+6537 OSO 147AC distance=75' 21288+6537 OSO 147AD distance=75' 21356+6526 TOI2050 distance=78' 21208+6704 LDS4880 distance=83' 21481+6625 MLB 270 distance=84' 21311+6521 TDT3005 distance=86' 21491+6648 STF2836AB distance=88' 21491+6648 WAL 140AC distance=88' 21282+6525 HJ 1656AB distance=88' 21282+6525 HJ 1656AC distance=88' 21282+6525 ABH 145AD distance=88' 21282+6525 ABH 145AE distance=88' 21282+6525 ABH 145AF distance=88' 21282+6525 ABH 145AG distance=88' 21282+6525 ABH 145AH distance=88' 21282+6525 ES 1919AI distance=88' 21195+6647 TDT2902 distance=89' 21455+6745 HU 970 distance=89' 21459+6548 HJ 1696 distance=90' 21399+6808 STF2823 distance=90' 21225+6751 TDT2933 distance=97' 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 21344+6644 STFA 57 AB 25 183.1 1
Show 21344+6644 STFA 57 AC 346 126.1 1
Show 21385+6636 LDS4902 258 25.2 26
Show 21338+6611 LDS4897 315 101.7 34
Show 21293+6703 HU 964 271 1.3 36
Show 21365+6718 KPP4238 336 12.9 37
Show 21326+6607 HJ 1665 65 22.7 39
Show 21278+6649 DCH 115 321 0.6 40
Show 21372+6604 HDS3077 273 0.1 43
Show 21334+6728 WHC 23 201 15.6 45
Show 21338+6549 AZC 181 170 7.3 56
Show 21331+6543 TDT3026 225 2.3 62
Show 21444+6621 MLB 269 4 2.3 64
Show 21430+6606 WNT 1 AB 330 2.5 64
Show 21430+6606 WNT 1 AC 296 2.5 64
Show 21430+6606 WNT 1 AD 11 8.4 64
Show 21430+6606 WNT 1 AE 265 11.2 64
Show 21430+6606 WNT 1 AF 176 12.5 64
Show 21430+6606 LI 8 AG 123 6.5 64
Show 21430+6606 KAT 1 AH 205 10.7 64
Show 21430+6606 KAT 1 AI 204 6.4 64
Show 21430+6606 KAT 1 AJ 97 1.9 64
Show 21430+6606 KAT 1 AK 276 2.3 64
Show 21430+6606 KAT 1 AL 306 3.7 64
Show 21359+6539 MLR 83 AB 321 0.5 66
Show 21359+6539 MLR 83 AB,C 10 23.9 66
Show 21238+6619 LDS4884 283 3.9 68
Show 21290+6744 TDT2986 223 0.5 69
Show 21309+6537 SKF2614 236 54.9 70
Show 21288+6537 OSO 147 AB 211 23.1 75
Show 21288+6537 OSO 147 AC 287 24.7 75
Show 21288+6537 OSO 147 AD 119 22.3 75
Show 21356+6526 TOI2050 109 12.2 78
Show 21208+6704 LDS4880 141 226.6 83
Show 21481+6625 MLB 270 265 1.6 84
Show 21311+6521 TDT3005 253 0.4 86
Show 21491+6648 STF2836 AB 155 11.8 88
Show 21491+6648 WAL 140 AC 253 64.5 88
Show 21282+6525 HJ 1656 AB 164 13.5 88
Show 21282+6525 HJ 1656 AC 14 15.1 88
Show 21282+6525 ABH 145 AD 68 98.5 88
Show 21282+6525 ABH 145 AE 96 64.3 88
Show 21282+6525 ABH 145 AF 182 49.5 88
Show 21282+6525 ABH 145 AG 190 55.6 88
Show 21282+6525 ABH 145 AH 247 78.6 88
Show 21282+6525 ES 1919 AI 23 8.2 88
Show 21195+6647 TDT2902 182 0.9 89
Show 21455+6745 HU 970 274 0.4 89
Show 21459+6548 HJ 1696 130 17.3 90
Show 21399+6808 STF2823 254 1.5 90
Show 21225+6751 TDT2933 157 0.6 97

 
 
WDS 21344+6644 : COMPONENTS
 
 
  A B
B pa=10.5°
sep=168.51"
 
C pa=354.3°
sep=122.89"
pa=224.7°
sep=60.99"
 
 
21344+6644 A
 
 
Name HD 205741 Coord arcsec 2000 213425.84+664335.5 Mag 7.07 Spectral class K1III (yellow-orange)
PmRA -25.00 PmDE -31.0 SAO 19510 HIP 106515
Tycho2 4261-00422-1 HD 205741 GC 30237 BD BD+66 1415
Tycho2
Tycho2 4261-00422-1 Pflag RAmdeg 323.60751352 DEmdeg 66.72645413
PmRA -26.1 PmDE -28.5 E RAmdeg 4 E DEmdeg 5
E pmRA 1.1 E pmDE 1.2 EpRAm 1991.46 EpDEm 1991.46
Num 11 Q RAmdeg 0.2 Q DEmdeg 0.8 Q pmRA 0.3
Q pmDE 0.7 BTmag 8.376 E BTmag 0.016 VTmag 7.066
E VTmag 0.010 Prox 999 TYC T HIP 106515
CCDM RAdeg 323.60766583 DEdeg 66.72651944 EpRA 1990 1.71
EpDE 1990 1.77 E RAdeg 4.4 E DEdeg 4.7 Posflg
Corr 0.0
SAO
SAO 19510 DelFlag RA1950 PmRA1950 -0.0046
DE1950 PmDE1950 -0.03 Vmag 7 SpType K0
Double code Source 70 CatNum 30237 DM BD+66 1415
DMcomp BDsup HD 205741 M HD 0
GC 30237 RA1950rad 5.64353351 DE1950rad 1.1606984 PmRA2000 -0.0042
PmDE2000 -0.035
Hipparcos
Catalog H HIP 106515 Proxy RAhms 21 34 25.84
DEdms +66 43 35.5 Vmag 6.95 VarFlag R Vmag H
RAdeg 323.608 DEdeg 66.7265 AstroRef Plx 5.58
CCDM 21345+6645 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 205741 BD BD+66 1415
CD CP Dm number +66 1415 VIred 1.06
SpType K1III R SpType Coord arcsec 2000 213425.84+664335.5
Hipparcos 2
HIP 106515 Sn 5 So 0 Nc 1
RArad 5.6480193284 DErad 1.1645975327 Plx 5.98 PmRA -25.23
PmDE -30.59 E RArad 0.37 E DErad 0.36 E Plx 0.4
E pmRA 0.55 E pmDE 0.48 Hpmag 7.1143 E Hpmag 0.0012
SHp 0.012 VA 0 BV 1.111 E BV 0.01
VI 1.07
 
 
21344+6644 B
 
 
Coord arcsec 2000 213431.04+664621.2 Mag 7.18 PmRA -3.00 PmDE -18.0
Calc delta mag 0.11 Calc coord yes
 
 
21344+6644 C
 
 
Coord arcsec 2000 213423.79+664537.8 Mag 11.9 PmRA -4.00 PmDE 2.0
Calc delta mag 4.83 Calc coord yes