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Current system
17574+3540
STF 2257 AB
HD 163991


Nearby doubles
17' : 17587+3538
COU1002

21' : 17584+3524
COU1000

27' : 17553+3532
TDT 572AB

39' : 18001+3600
UC 3467

44' : 17548+3610
COU1303

50' : 18011+3558
POP 210AB

52' : 17597+3624
OSO 91AB

56' : 17533+3605
STF2243

58' : 17561+3636
ES 2477

72' : 17552+3647
KPP1766

72' : 17544+3439
A 1884

76' : 17523+3624
OSO 85

77' : 17511+3555
LDS4766

87' : 18043+3557
JOD 14

87' : 17504+3526
STF2236AB

88' : 17506+3511
UC 3423

90' : 18025+3643
ES 2479

99' : 17591+3716
J 755

99' : 17591+3404
HO 75

100' : 17507+3638
TDS 889

101' : 18050+3619
LDS4774

105' : 18017+3714
GCB 29

105' : 17532+3713
DAE 11

107' : 17487+3536
HU 1182AB

107' : 18058+3512
TDT 678

107' : 18056+3618
AHD 1



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.

17574+3540 STF 2257 AB (HD 163991)

 
 
17h 57m 21.02s +35° 40' 29.7" P.A. 153.00 sep 23.4 mag 7.69,11.15 Sp K0 dist. 223.21 pc (728.11 l.y.)
 
 
Coord 2000 17574+3540 Discov num STF2257 Comp AB Coord arcsec 2000 17 57 21.02 +35 40 29.7
Date first 1900 Date last 2017 Obs 21
Pa first 150 Pa last 153.1 P.A. Now (θ) 153.1°
Sep first 21.4 Sep last 23.38 Sep. Now (ρ) 23.38"
Mag pri 7.69 Mag sec 11.15 delta mag (ΔM) 3.46 Spectral class K0 (yellow-orange)
Pri motion ra +004 Sec motion ra -003
Pri motion dec +007 Sec motion dec -008
Notes
rPM=1.937
This double is not physical.
 
 
17574+3540 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 163991 66507 17 57 21 +35 40 30 STF 2257 AB 2017 21 153 23.4 7.69 11.15 3.46 <===
Show 66507 17 57 21 +35 40 30 WAL 86 AC 2015 14 261 122.0 7.69 11.12 3.43
Show 17 57 11 +35 40 10 HO 73 CD 2019 40 213 1.8 11.12 11.14 0.02
Show 17 57 11 +35 40 10 STF 2256 CE 2015 18 350 9.1 11.12 14.10 2.98
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 163991 Constellation Hercules SAO 66507 HIP 87902
Tycho2 2620-00350-1 Gaia DR2 4607944487735404672 HD 163991 GC 24438
BD BD+35 3112 Distance 223.21 Distance ly 728.11
 
 
WDS 17574+3540 STF 2257 AB (HD 163991) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Ho_1883 Ma j Hough, G.W. 1883MNRAS..43..371H
Ho_1883 MNRAS 43, 371, 1883 (data also in Ho_1890) 1890AN....125....1H
Ho_1884 Ma j Hough, G.W. 1884MNRAS..44..365H
Ho_1884 MNRAS 44, 365, 1884 (data also in Ho_1890) 1890AN....125....1H
Ho_1885 Ma j Hough, G.W. 1885MNRAS..45..417H
Ho_1885 MNRAS 45, 417, 1885 (data also in Ho_1890) 1890AN....125....1H
Ho_1886 Ma j Hough, G.W. 1886MNRAS..46..393H
Ho_1886 MNRAS 46, 393, 1886 (data also in Ho_1890) 1890AN....125....1H
Ho_1887 Ma j Hough, G.W. 1887AN....116..273H
Ho_1887 AN 116, 273, 1887
Ho_1890 Ma j Hough, G.W. 1890AN....125....1H
Ho_1890 AN 125, 1, 1890
Ho_1890b Ma j Hough, G.W. 1890AJ......9..177H
Ho_1890b AJ 9, 177, 1890 (some data also in Ho_1890 or Ho_1894b) 1890AN....125....1H
Ho_1894a Ma - Hough, G.W. 1894MNRAS..54..251H
Ho_1894a MNRAS 54, 251, 1894
Ho_1894b Ma j Hough, G.W. (HO 304 - 490) 1894AN....135..281H
Ho_1894b AN 135, 281, 1894
Ho_1894c Ma - Hough, G.W. (measure by Dembowski, H.) 1894AN....135..281H
Ho_1894c AN 135, 281, 1894
Ho_1899a Ma j Hough, G.W. 1899AN....149..65H
Ho_1899a AN 149, 65, 1899
Ho_1899b Ma - Hough, G.W. (measure by Burnham, S.W.) 1899AN....149..65H
Ho_1899b AN 149, 65, 1899
Ho_1907 Ma - Hough, G.W. 1907PFAO....3c...1D
Ho_1907 Pub. Univ. Penn. 3, Pt. 3, 1907 (measures sent to Doolittle)
Ho_1932A Ma - Hough, G.W. 1932QB821.A43......
Ho_1932A cited in ADS, 1932 (unpublished measures sent to Aitken in manuscript by Fox)
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.
Wal1934 Ma j Wallenquist, A. 1934AnBos...6....3W
Wal1934 Ann. Bosscha Obs. Lembang 6, Pt.2, 1934
Wal1944a Zw - Wallenquist, A. 1954MeUpp...85.....
Wal1944a Medd. Uppsala Obs. #85, 1944
Wal1944a (Visual measures with wedge photometer attached to 14-inch refractor. No dates
Wal1944a given for measures; default date = decade of publication added.)
Wal1944b Zw - Wallenquist, A. 1954MeUpp...87.....
Wal1944b Medd. Uppsala Obs. #87, 1944
Wal1944b (Visual measures with wedge photometer attached to 14-inch refractor. No dates
Wal1944b given for measures; default date = decade of publication added.)
Wal1947 Zw - Wallenquist, A. 1947UppAn...2....2W
Wal1947 Ann. Uppsala Astron. Obs. 2, No.2, 1947
Wal1947 (A catalogue containing results of the two prior series, plus additional measures
Wal1947 with the 14-inch refractor and wedge photometer)
Wal1948 Zw - Wallenquist, A. 1948UppAn...2....3W
Wal1948 Ann. Uppsala Astron Obs. 2, #3, 1948
Wal1948 (Visual measures of southern double stars made with 17-inch refractor of La Plata
Wal1948 and wedge photometer. No dates listed; default date = decade of publication added)
Wal1950 Zd - Wallenquist, A. 1950MeUpp..103.....
Wal1950 Medd. Uppsala Obs. #103, 1950
Wal1954 Zw - Wallenquist, A. 1954UppAn...4Q....W
Wal1954 Ann. Uppsala Astron Obs. 4, #2, 1954
Wal1954 ("General Catalogue of Differences in Magnitude of Double Stars". Weighted mean
Wal1954 values from numerous sources)
Wal1958 Zw - Wallenquist, A. 1958MeUpp..118.....
Wal1958 Medd. Uppsala Obs. #118, 1958
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17574+3540 STF2257 AB 2006 13 152 22.7 7.69 11.15 K0 D 175721.02+354029.7
17574+3540 STF2257 AB 2013 15 151 22.5 7.69 11.15 K0 175721.02+354029.7
17574+3540 STF2257 AB 2015 16 153 22.9 7.69 11.15 K0 175721.02+354029.7
17574+3540 STF2257 AB 2017 21 153 23.4 7.69 11.15 K0 175721.02+354029.7

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

 
 
WDS 17574+3540 STF 2257 AB (HD 163991) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17574+3540 STF 2257 AB (HD 163991) : MEASURES
 
 
No records found.

 
 
WDS 17574+3540 (HD 163991) : VIRTUAL EYEPIECE
 
 

17574+3540 STF2257A mag 7.69 Sp K0 17574+3540 STF2257B sep 22.6 P.A. 157.60 mag 11.15 17574+3540 HO 73C sep 120.8 P.A. 260.90 mag 11.12 Sp G5 17574+3540 HO 73D sep 121.9 P.A. 260.20 mag 11.14 17574+3540 STF2256E sep 121.0 P.A. 265.10 mag 14.1 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 17574+3540 (HD 163991) : ALADIN DSS IMAGE @ 17h 57m 21.02s +35° 40' 29.7"
 
 
 
 
WDS 17574+3540 STF 2257 AB (HD 163991) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17574+3540 STF2257AB distance=0' 17574+3540 HO 73CD distance=3' 17574+3540 STF2256CE distance=3' 17587+3538 COU1002 distance=17' 17584+3524 COU1000 distance=21' 17553+3532 TDT 572AB distance=27' 17553+3532 A 2987AC distance=27' 18001+3600 UC 3467 distance=39' 17548+3610 COU1303 distance=44' 18011+3558 POP 210BC distance=49' 18011+3558 CVE 2DE distance=49' 18011+3558 POP 210AB distance=50' 17597+3624 OSO 91AB distance=52' 17597+3624 OSO 91AC distance=52' 17533+3605 STF2243 distance=56' 17561+3636 ES 2477 distance=58' 17552+3647 KPP1766 distance=72' 17544+3439 A 1884 distance=72' 17523+3624 OSO 85 distance=76' 17511+3555 LDS4766 distance=77' 18043+3557 JOD 14 distance=87' 17504+3526 STF2236AB distance=87' 17504+3526 ORL 1Aa,Ab distance=87' 17506+3511 UC 3423 distance=88' 18025+3643 ES 2479 distance=90' 17591+3716 J 755 distance=99' 17591+3404 HO 75 distance=99' 17507+3638 TDS 889 distance=100' 18050+3619 LDS4774 distance=101' 18017+3714 GCB 29 distance=105' 17532+3713 DAE 11 distance=105' 17487+3536 HU 1182AB distance=107' 17487+3536 FMR 72AC distance=107' 17487+3536 FMR 72BC distance=107' 18058+3512 TDT 678 distance=107' 18056+3618 AHD 1 distance=107' 17528+3408 TDT 553 distance=109' 17505+3651 COU1146 distance=109' 17573+3351 ES 344 distance=110' 17482+3605 LDS4761 distance=115' 17495+3436 AG 214 distance=117' 17496+3649 ES 2169 distance=117' 18052+3430 CBL 74AB distance=120' 17578+3744 TOB 141 distance=124' 17482+3637 TDT 511 distance=125' 18034+3400 TDT 657 distance=126' 17551+3745 OSO 89AB distance=128' 17551+3745 OSO 89AC distance=128' 17551+3745 OSO 89AD distance=128' 17469+3555 MLB 936 distance=129' 17467+3538 STF2226 distance=130' 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 17574+3540 STF2257 AB 153 23.4
Show 17574+3540 WAL 86 AC 261 122.0
Show 17574+3540 HO 73 CD 213 1.8 3
Show 17574+3540 STF2256 CE 350 9.1 3
Show 17587+3538 COU1002 164 0.9 17
Show 17584+3524 COU1000 154 0.9 21
Show 17553+3532 TDT 572 AB 59 1.4 27
Show 17553+3532 A 2987 AC 61 1.4 27
Show 18001+3600 UC 3467 278 42.4 39
Show 17548+3610 COU1303 258 1.3 44
Show 18011+3558 POP 210 BC 135 2.9 49
Show 18011+3558 CVE 2 DE 226 2.5 49
Show 18011+3558 POP 210 AB 266 79.8 50
Show 17597+3624 OSO 91 AB 16 20.4 52
Show 17597+3624 OSO 91 AC 104 27.3 52
Show 17533+3605 STF2243 39 1.1 56
Show 17561+3636 ES 2477 5 6.8 58
Show 17552+3647 KPP1766 85 13.7 72
Show 17544+3439 A 1884 311 2.3 72
Show 17523+3624 OSO 85 73 28.2 76
Show 17511+3555 LDS4766 187 9.7 77
Show 18043+3557 JOD 14 339 0.3 87
Show 17504+3526 STF2236 AB 98 3.4 87
Show 17504+3526 ORL 1 Aa,Ab 31 0.3 87
Show 17506+3511 UC 3423 180 41.4 88
Show 18025+3643 ES 2479 232 9.9 90
Show 17591+3716 J 755 141 1.7 99
Show 17591+3404 HO 75 215 1.3 99
Show 17507+3638 TDS 889 14 1.4 100
Show 18050+3619 LDS4774 268 302.4 101
Show 18017+3714 GCB 29 212 3.9 105
Show 17532+3713 DAE 11 1.6 105
Show 17487+3536 HU 1182 AB 299 0.4 107
Show 17487+3536 FMR 72 AC 220 6.1 107
Show 17487+3536 FMR 72 BC 229 6.7 107
Show 18058+3512 TDT 678 236 0.7 107
Show 18056+3618 AHD 1 278 39.8 107
Show 17528+3408 TDT 553 62 0.7 109
Show 17505+3651 COU1146 146 0.1 109
Show 17573+3351 ES 344 30 9.1 110
Show 17482+3605 LDS4761 41.3 115
Show 17495+3436 AG 214 204 4.6 117
Show 17496+3649 ES 2169 337 8.5 117
Show 18052+3430 CBL 74 AB 245 11.2 120
Show 17578+3744 TOB 141 356 16.8 124
Show 17482+3637 TDT 511 68 0.6 125
Show 18034+3400 TDT 657 330 3.4 126
Show 17551+3745 OSO 89 AB 117 20.7 128
Show 17551+3745 OSO 89 AC 74 21.3 128
Show 17551+3745 OSO 89 AD 26 23.8 128
Show 17469+3555 MLB 936 83 2.9 129

 
 
WDS 17574+3540 : COMPONENTS
 
 
  A B C D
B pa=157.6°
sep=22.55"
 
C pa=260.9°
sep=120.83"
pa=270.7°
sep=127.90"
 
D pa=260.2°
sep=121.86"
pa=270.1°
sep=128.68"
pa=207.5°
sep=1.71"
 
E pa=265.1°
sep=121.00"
pa=274.7°
sep=129.60"
pa=351.9°
sep=9.05"
pa=357.4°
sep=10.49"
 
 
17574+3540 A
 
 
Name HD 163991 Coord arcsec 2000 175721.02+354029.7 Mag 7.69 Spectral class K0 (yellow-orange)
PmRA 4.00 PmDE 7.0 SAO 66507 HIP 87902
Tycho2 2620-00350-1 HD 163991 GC 24438 BD BD+35 3112
Tycho2
Tycho2 2620-00350-1 Pflag RAmdeg 269.33759315 DEmdeg 35.67490607
PmRA 5.0 PmDE 9.8 E RAmdeg 5 E DEmdeg 5
E pmRA 1.3 E pmDE 1.4 EpRAm 1991.08 EpDEm 1991.37
Num 12 Q RAmdeg 0.6 Q DEmdeg 1.4 Q pmRA 0.6
Q pmDE 1.4 BTmag 8.832 E BTmag 0.016 VTmag 7.691
E VTmag 0.011 Prox 999 TYC T HIP 87902
CCDM RAdeg 269.33757861 DEdeg 35.67488389 EpRA 1990 1.43
EpDE 1990 1.69 E RAdeg 5.1 E DEdeg 4.7 Posflg
Corr -0.1
SAO
SAO 66507 DelFlag RA1950 PmRA1950 0.0004
DE1950 PmDE1950 0.012 Vmag 7.7 SpType K0
Double code Source 70 CatNum 24438 DM BD+35 3112
DMcomp BDsup HD 163991 M HD 0
GC 24438 RA1950rad 4.69313015 DE1950rad 0.62271836 PmRA2000 0.0007
PmDE2000 0.013
Hipparcos
Catalog H HIP 87902 Proxy RAhms 17 57 21.02
DEdms +35 40 29.6 Vmag 7.58 VarFlag R Vmag H
RAdeg 269.338 DEdeg 35.6749 AstroRef Plx 4.83
CCDM 17574+3540 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 163991 BD BD+35 3112
CD CP Dm number +35 3112 VIred 0.95
SpType K0 R SpType Coord arcsec 2000 175721.02+354029.6
Hipparcos 2
HIP 87902 Sn 5 So 0 Nc 1
RArad 4.7008275813 DErad 0.6226441685 Plx 4.48 PmRA 3.47
PmDE 7.39 E RArad 0.44 E DErad 0.51 E Plx 0.57
E pmRA 0.48 E pmDE 0.56 Hpmag 7.746 E Hpmag 0.0009
SHp 0.012 VA 0 BV 0.997 E BV 0.011
VI 0.98
CCDM
Ccdm 17574+3540 RComp Comp A Note1
Note2 Discov num DRAs -2.98 DDEs 29.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.8 Sp K0 PmNote *
PmRA 3 PmDE 3 Dm number +35 3112 Cat1 BD
Name2 +35 1568 Cat2 AGK2/3 HD 163991 M HD
ADS BDS A10932 M ADS BDS N IDS IDS 17538N3541A
HIC 87902
 
 
17574+3540 B
 
 
Coord arcsec 2000 175721.73+354008.8 Mag 11.15 PmRA -3.00 PmDE -8.0
Calc delta mag 3.46 Calc coord yes
CCDM
Ccdm 17574+3540 RComp Comp B Note1
Note2 Discov num STF2257 DRAs -2.07 DDEs 8.7
R dRAs 90 Year 1900 Theta 150 Rho 21.6
Obs 4 Vmag 11.0 Sp PmNote *
PmRA 4 PmDE -18 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10932 M ADS BDS N IDS IDS 17538N3541B
HIC
 
 
17574+3540 C
 
 
Coord arcsec 2000 175711.23+354010.5 Coord calc 175711.23+354010.5 Mag 11.12 Spectral class G5 (yellow)
PmRA -55.00 PmDE -49.0 Calc delta mag 3.43
 
 
17574+3540 D
 
 
Coord arcsec 2000 175711.17+354009.0 Mag 11.14 Calc delta mag 3.45 Calc coord yes
 
 
17574+3540 E
 
 
Coord arcsec 2000 175711.13+354019.5 Mag 14.1 PmRA -21.00 PmDE 1.0
Calc delta mag 6.41 Calc coord yes