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Doubles in session


Current system
19221-0444
STF 2501 AC


Nearby doubles
6' : 19225-0447
J 1673

28' : 19236-0430
TDT1418

30' : 19202-0454
GWP2840

30' : 19236-0424
A 103

43' : 19196-0424
GWP2837

47' : 19205-0525
BUP 189AB

49' : 19214-0356
J 2264AB

49' : 19252-0430
A 104

53' : 19253-0503
RST4628

63' : 19183-0416
KPP 918

66' : 19247-0353
GWP2849

67' : 19183-0520
GMC 19

67' : 19254-0528
TDT1445

69' : 19248-0349
GWP2850

72' : 19181-0525
HJ 881AB

79' : 19188-0546
HO 575

80' : 19260-0538
NSN 147

82' : 19210-0324
J 2961

83' : 19205-0603
A 101

89' : 19227-0612
JNN 123

89' : 19268-0350
TDS 991

91' : 19189-0327
HO 103

98' : 19180-0328
STF2490

106' : 19151-0428
LDS5873

107' : 19252-0309
RST5134

107' : 19149-0442
TDT1317



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.

19221-0444 STF 2501 AC

 
 
19h 22m 03.68s -04° 44' 20.0" P.A. 79.00 sep 7.9 mag 7.76,14.00 Sp F5 dist. 97.66 pc (318.57 l.y.)
 
 
Coord 2000 19221-0444 Discov num STF2501 Comp AC Coord arcsec 2000 19 22 03.68 -04 44 20.0
Date first 1901 Date last 2014 Obs 4
Pa first 108 Pa last 79.2 P.A. Now (θ) 79.2°
Sep first 9.6 Sep last 7.851 Sep. Now (ρ) 7.851"
Mag pri 7.76 Mag sec 14.00 delta mag (ΔM) 6.24 Spectral class F5 (yellow-white)
Pri motion ra +008 Sec motion ra
Pri motion dec -056 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
19221-0444 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 181806 143315 19 22 04 -04 44 20 STF 2501 AB 2015 38 21 20.0 7.76 9.67 1.91
Show 143315 19 22 04 -04 44 20 STF 2501 AC 2014 4 79 7.9 7.76 14.00 6.24 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquila SAO 143315 HIP 95202 Tycho2 5138-02405-1
Gaia DR2 4211769076500685568 HD 181806 BD BD-05 4945 Distance 97.66
Distance ly 318.57
 
 
WDS 19221-0444 STF 2501 AC : NOTES
 
 
discov_num notes refcode
STF2501 B is BD-05@4946.
 
 
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
19221-0444 STF2501 AC 1999 2 85 7.9 7.76 14.00 F5 N D 192203.68-044420.0
19221-0444 STF2501 AC 2013 3 82 7.0 7.76 14.00 F5 N 192203.68-044420.0
19221-0444 STF2501 AC 2014 4 79 7.9 7.76 14.00 F5 N 192203.68-044420.0

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

 
 
WDS 19221-0444 STF 2501 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19221-0444 STF 2501 AC : MEASURES
 
 
No records found.

 
 
WDS 19221-0444 : VIRTUAL EYEPIECE
 
 

19221-0444 STF2501A mag 7.76 Sp F5 19221-0444 STF2501B sep 19.9 P.A. 21.20 mag 9.67 19221-0444 STF2501C sep 7.8 P.A. 79.20 mag 14 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 19221-0444 : ALADIN DSS IMAGE @ 19h 22m 03.68s -04° 44' 20.0"
 
 
 
 
WDS 19221-0444 STF 2501 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19221-0444 STF2501AC distance=0' 19225-0447 J 1673 distance=6' 19236-0430 TDT1418 distance=28' 19202-0454 GWP2840 distance=30' 19236-0424 A 103 distance=30' 19196-0424 GWP2837 distance=43' 19205-0525 ISO 10Aa,Ab distance=47' 19205-0525 BUP 189AB distance=47' 19214-0356 J 2264AB distance=49' 19252-0430 A 104 distance=49' 19214-0356 J 2264BC distance=50' 19253-0503 RST4628 distance=53' 19183-0416 KPP 918 distance=63' 19247-0353 GWP2849 distance=66' 19183-0520 GMC 19 distance=67' 19254-0528 TDT1445 distance=67' 19248-0349 GWP2850 distance=69' 19181-0525 HDS2731Ba,Bb distance=72' 19181-0525 HJ 881BC distance=72' 19181-0525 HJ 881AB distance=72' 19181-0525 ABH 114AD distance=72' 19181-0525 HO 574AE distance=72' 19188-0546 HO 575 distance=79' 19260-0538 NSN 147 distance=80' 19210-0324 J 2961 distance=82' 19205-0603 A 101 distance=83' 19227-0612 JNN 123 distance=89' 19268-0350 TDS 991 distance=89' 19189-0327 HO 103 distance=91' 19180-0328 STF2490 distance=98' 19151-0428 LDS5873 distance=106' 19252-0309 RST5134 distance=107' 19149-0442 TDT1317 distance=107' 19172-0323 A 100 distance=110' 19233-0635 HDS2745AB distance=113' 19233-0635 GII 282Aa,Ab distance=113' 19286-0344 A 2596 distance=115' 19200-0638 STF2494 distance=118' 19201-0640 TDT1381 distance=120' 19206-0645 HDS2735AB distance=123' 19206-0645 TOK 432AC distance=123' 19270-0305 HO 106 distance=124' 19182-0636 DAM 149 distance=126' 19185-0640 DAM 150 distance=128' 19181-0638 DAM 148AB distance=128' 19181-0638 DAM 148AC distance=128' 19179-0638 DAM 147 distance=130' 19231-0653 RST4627 distance=130' 19267-0638 RST4629 distance=133' 19184-0641 J 2260 distance=135' 19282-0303 TDS 996 distance=137' 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 19221-0444 STF2501 AB 21 20.0
Show 19221-0444 STF2501 AC 79 7.9
Show 19225-0447 J 1673 93 5.0 6
Show 19236-0430 TDT1418 70 0.5 28
Show 19202-0454 GWP2840 26 59.8 30
Show 19236-0424 A 103 3 3.5 30
Show 19196-0424 GWP2837 150 83.5 43
Show 19205-0525 ISO 10 Aa,Ab 56 0.5 47
Show 19205-0525 BUP 189 AB 6 112.1 47
Show 19214-0356 J 2264 AB 18 47.1 49
Show 19252-0430 A 104 54 5.1 49
Show 19214-0356 J 2264 BC 16 6.3 50
Show 19253-0503 RST4628 117 1.2 53
Show 19183-0416 KPP 918 136 7.6 63
Show 19247-0353 GWP2849 297 7.1 66
Show 19183-0520 GMC 19 85 8.3 67
Show 19254-0528 TDT1445 104 0.6 67
Show 19248-0349 GWP2850 80 15.2 69
Show 19181-0525 HDS2731 Ba,Bb 218 1.1 72
Show 19181-0525 HJ 881 BC 307 7.4 72
Show 19181-0525 HJ 881 AB 340 32.0 72
Show 19181-0525 ABH 114 AD 250 86.9 72
Show 19181-0525 HO 574 AE 62 15.6 72
Show 19188-0546 HO 575 10 5.8 79
Show 19260-0538 NSN 147 256 4.7 80
Show 19210-0324 J 2961 243 8.1 82
Show 19205-0603 A 101 36 3.5 83
Show 19227-0612 JNN 123 80 0.1 89
Show 19268-0350 TDS 991 178 1.1 89
Show 19189-0327 HO 103 247 3.9 91
Show 19180-0328 STF2490 247 3.5 98
Show 19151-0428 LDS5873 100 85.5 106
Show 19252-0309 RST5134 144 1.9 107
Show 19149-0442 TDT1317 148 3.9 107
Show 19172-0323 A 100 322 0.8 110
Show 19233-0635 HDS2745 AB 10 1.3 113
Show 19233-0635 GII 282 Aa,Ab 121 0.1 113
Show 19286-0344 A 2596 248 0.3 115
Show 19200-0638 STF2494 89 25.7 118
Show 19201-0640 TDT1381 177 2.4 120
Show 19206-0645 HDS2735 AB 345 0.1 123
Show 19206-0645 TOK 432 AC 57 1.0 123
Show 19270-0305 HO 106 223 1.2 124
Show 19182-0636 DAM 149 279 7.7 126
Show 19185-0640 DAM 150 33 9.5 128
Show 19181-0638 DAM 148 AB 333 6.0 128
Show 19181-0638 DAM 148 AC 229 5.6 128
Show 19179-0638 DAM 147 25 8.0 130
Show 19231-0653 RST4627 197 0.7 130
Show 19267-0638 RST4629 90 0.7 133
Show 19184-0641 J 2260 225 4.1 135

 
 
WDS 19221-0444 : COMPONENTS
 
 
  A B
B pa=21.2°
sep=19.94"
 
C pa=79.2°
sep=7.83"
pa=178.4°
sep=17.12"
 
 
19221-0444 A
 
 
Name HD 181806 Coord arcsec 2000 192203.68-044420.0 Mag 7.76 Spectral class F5 (yellow-white)
PmRA 10.00 PmDE -55.0 SAO 143315 HIP 95202
Tycho2 5138-02405-1 HD 181806 GC 26711 BD BD-05 4945
Tycho2
Tycho2 5138-02405-1 Pflag RAmdeg 290.51535988 DEmdeg -4.73902265
PmRA 8.4 PmDE -56.0 E RAmdeg 4 E DEmdeg 5
E pmRA 1.2 E pmDE 1.1 EpRAm 1991.48 EpDEm 1991.16
Num 12 Q RAmdeg 1.5 Q DEmdeg 1.2 Q pmRA 1.4
Q pmDE 1.2 BTmag 8.240 E BTmag 0.015 VTmag 7.756
E VTmag 0.011 Prox 200 TYC T HIP 95202
CCDM A RAdeg 290.51534056 DEdeg -4.73889250 EpRA 1990 1.80
EpDE 1990 1.65 E RAdeg 4.4 E DEdeg 5.3 Posflg
Corr -0.1
SAO
SAO 143315 DelFlag RA1950 PmRA1950 0.0001
DE1950 PmDE1950 -0.046 Vmag 7.7 SpType F5
Double code Source 70 CatNum 26711 DM BD-05 4945
DMcomp BDsup HD 181806 M HD 0
GC 26711 RA1950rad 5.05887946 DE1950rad -0.08437385 PmRA2000 0.0003
PmDE2000 -0.047
Hipparcos
Catalog H HIP 95202 Proxy RAhms 19 22 03.68
DEdms -04 44 20.0 Vmag 7.69 VarFlag R Vmag H
RAdeg 290.515 DEdeg -4.73889 AstroRef A Plx 10.99
CCDM 19221-0444 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source P Qual A M HIP
Theta Rho HD 181806 BD BD-05 4945
CD CP Dm number -05 4945 VIred 0.55
SpType F5 R SpType Coord arcsec 2000 192203.68-044420.0
Hipparcos 2
HIP 95202 Sn 95 So 3 Nc 1
RArad 5.0704492037 DErad -0.0827091616 Plx 10.24 PmRA 9.08
PmDE -54.4 E RArad 1.15 E DErad 0.72 E Plx 1.31
E pmRA 1.49 E pmDE 1.05 Hpmag 7.7939 E Hpmag 0.0174
SHp 0.039 VA 0 BV 0.475 E BV 0.012
VI 0.55
CCDM
Ccdm 19221-0444 RComp Comp A Note1
Note2 Discov num DRAs -2.38 DDEs -20.0
R dRAs 10 Year Theta Rho
Obs 3 Vmag 7.7 Sp F5 PmNote *
PmRA 2 PmDE -47 Dm number -05 4945 Cat1 BD
Name2 143315 Cat2 SAO HD 181806 M HD
ADS BDS A12347 M ADS BDS N IDS IDS 19168S0456A
HIC 95202
 
 
19221-0444 B
 
 
Coord arcsec 2000 192204.16-044401.4 Mag 9.67 PmRA 10.00 PmDE -54.0
HIP 95205 BD BD-05 4946 Calc delta mag 1.91 Calc coord yes
Hipparcos
Catalog H HIP 95205 Proxy RAhms 19 22 04.17
DEdms -04 44 01.4 Vmag 9.9 VarFlag R Vmag H
RAdeg 290.517 DEdeg -4.73372 AstroRef B Plx 10.99
CCDM 19221-0444 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source F Qual A M HIP
Theta Rho HD BD BD-05 4946
CD CP Dm number -05 4946 VIred 0.73
SpType R SpType Coord arcsec 2000 192204.17-044401.4
Hipparcos 2
HIP 95205 Sn 95 So 3 Nc 1
RArad 5.0704847034 DErad -0.0826190895 Plx -36.49 PmRA 39.25
PmDE -58.12 E RArad 10.07 E DErad 6.44 E Plx 13.04
E pmRA 13.74 E pmDE 10.53 Hpmag 9.6127 E Hpmag 0.0769
SHp 0 VA 0 BV 0.743 E BV 0.041
VI 0.79
CCDM
Ccdm 19221-0444 RComp Comp B Note1
Note2 Discov num STF2501 DRAs -1.71 DDEs -2.2
R dRAs 10 Year 1829 Theta 022 Rho 19.8
Obs 9 Vmag 10.2 Sp PmNote *
PmRA 36 PmDE -59 Dm number -05 4946 Cat1 BD
Name2 143316 Cat2 SAO HD M HD
ADS BDS A12347 M ADS BDS N IDS IDS 19168S0456B
HIC 95205
 
 
19221-0444 C
 
 
Coord arcsec 2000 192204.19-044418.5 Mag 14 Calc delta mag 6.24 Calc coord yes
CCDM
Ccdm 19221-0444 RComp Comp C Note1
Note2 Discov num STF2501 DRAs DDEs
R dRAs Year 1901 Theta 108 Rho 9.6
Obs 1 Vmag 13.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A12347 M ADS BDS N IDS IDS 19168S0456C
HIC 95202