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Doubles in session


Current system
18003+2154
A 1374 AB


Nearby doubles
8' : 18001+2201
BRT2440

14' : 17597+2204
FAL 59

21' : 17588+2155
HJ 2816

21' : 18001+2215
TDT 622

23' : 18019+2156
TDT 646

25' : 18015+2136
STF2264

43' : 18004+2112
A 1375

45' : 17597+2110
TDT 618

48' : 17584+2233
TDS 893

62' : 18022+2058
BUP 178AB

63' : 17561+2130
STT 339

65' : 18022+2055
LOC 2

69' : 17572+2247
UC 3453

71' : 18024+2050
TOK 56

71' : 18050+2127
STT 534

72' : 17589+2303
POU3332

74' : 18024+2302
POU3342

75' : 17551+2137
KPP4067

81' : 17571+2047
RAO 382

82' : 18058+2127
STT 341AB

83' : 17556+2102
TDT 577

85' : 18045+2255
TDT 664

87' : 17555+2250
GRV 970

90' : 17572+2312
POU3329

92' : 18029+2319
TDT 652

97' : 18040+2315
POU3345



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.

18003+2154 A 1374 AB

 
 
18h 00m 17.93s +21° 53' 47.5" P.A. 210.00 sep 0.5 mag 8.90,10.90 Sp G0
 
 
Coord 2000 18003+2154 Discov num A  1374 Comp AB Coord arcsec 2000 18 00 17.93 +21 53 47.5
Date first 1906 Date last 2021 Obs 38
Pa first 10 Pa last 210.1 P.A. Now (θ) 210.1°
Sep first 0.7 Sep last 0.522 Sep. Now (ρ) 0.522"
Mag pri 8.90 Mag sec 10.90 delta mag (ΔM) 2 Spectral class G0 (yellow)
Pri motion ra -030 Sec motion ra
Pri motion dec +014 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
18003+2154 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 85624 18 00 18 +21 53 48 WSI 106 Aa,Ab 2021 6 267 0.0 9.40 9.90 0.50
Show 85624 18 00 18 +21 53 48 A 1374 AB 2021 38 210 0.5 8.90 10.90 2.00 Y <===
Show HD 341480 85624 18 00 18 +21 53 48 LBU 6 AB,C 2015 10 298 76.4 8.61 11.33 2.72
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules SAO 85624 Tycho2 1566-01708-1 Gaia DR2 4576215537102834048
HD 341480 ADS 10971
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)139.53y Periastron (T)1995.81y Semi-major axis (a)0.504a
Eccentricity (e)0.806 Inclination (i)136.7° Longitude of periastron (ω)76°
Node (Ω)249° Notesn ReferenceMsn2017a
Equinox2000 Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 73.4 0.198
2001 67.2 0.229
2002 62.4 0.256
2003 58.5 0.282
2004 55.2 0.305
2005 52.4 0.326
2006 49.9 0.346
2007 47.6 0.365
2008 45.6 0.382
2009 43.8 0.398
2010 42.0 0.414
2011 40.5 0.429
2012 39.0 0.443
2013 37.6 0.456
2014 36.2 0.468
2015 35.0 0.480
2016 33.8 0.492
2017 32.7 0.502
2018 31.6 0.513
2019 30.5 0.523
2020 29.5 0.532
2021 28.5 0.541
2022 27.6 0.550
2023 26.6 0.558
2024 25.7 0.566
2025 24.9 0.574
2026 24.0 0.581
2027 23.2 0.588
2028 22.4 0.594
2029 21.6 0.601
2030 20.8 0.607


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds18003%2B2154a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)497y± 222 Periastron (T)1978.1y± 3.1 Semi-major axis (a)0.98a± 0.24
Eccentricity (e)0.41± 0.18 Inclination (i)124.1°± 2 Longitude of periastron (ω)233°± 9
Node (Ω)166°± 5.2 Notesn ReferenceMdz2017
Equinox2000 Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 251.3 0.348
2001 248.4 0.352
2002 245.5 0.356
2003 242.7 0.360
2004 240.0 0.365
2005 237.4 0.371
2006 234.9 0.378
2007 232.4 0.385
2008 230.1 0.392
2009 227.8 0.400
2010 225.6 0.408
2011 223.5 0.416
2012 221.5 0.425
2013 219.6 0.434
2014 217.7 0.444
2015 216.0 0.453
2016 214.3 0.463
2017 212.7 0.473
2018 211.1 0.483
2019 209.6 0.494
2020 208.2 0.504
2021 206.8 0.514
2022 205.5 0.525
2023 204.2 0.536
2024 203.0 0.546
2025 201.8 0.557
2026 200.7 0.568
2027 199.6 0.578
2028 198.6 0.589
2029 197.6 0.600
2030 196.6 0.610


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds18003%2B2154e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18003+2154 A 1374 AB : NOTES
 
 
discov_num notes refcode
A 1374 Angle decreasing.
AB: Additional notes may be found in Baize (1945). Baz1945b
 
 
REFERENCES
 
 
refcode metd author reference
Baz1945b Ma - Baize, P. 1945JO.....28...41B
Baz1945b J. Obs. 28, 41-58, 1945
Mdz2017 orb - Mendez, R.A., Claveria, R.M., Orchard, M.E., & Silva, J.F. 2017AJ....154..187M
Mdz2017 AJ 154, 187, 2017
Msn2017a orb - Miles, K.N. & Mason, B.D. 2017IAUDS.191....1M
Msn2017a Inf. Circ. 191, 1, 2017
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
312 LBU Le Beau, J.
350 WSI Douglass, G.G., Hindsley, R.B., & Worley, C.E.
359 WSI Mason, B.D., Hartkopf, W.I., Holdenried, E.R., Rafferty, T.J., Wycoff, G.L.,
359 WSI Hennessy, G.S., Hall, D.M., Urban, S.E., et al.
362 WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Holdenried, E.R., Platais, I.,
362 WSI Rafferty, T.J., Hall, D.M., Hennessy, G.S., et al.
363 WSI Mason, B.D., Hartkopf, W.I., Urban, S.E., Wycoff, G.L., Pascu, D., Hall, D.M.,
363 WSI Hennessy, G.S., Platais, I., et al.
364 WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Pascu, D., Urban, S.E., Hall, D.M.,
364 WSI Hennessy, G.S., Rafferty, T.J., et al.
391 WSI Mason, B.D., Hartkopf, W.I., Bredthauer, G., Ferguson, E.W., Finch, C.T., Kilian,
391 WSI C.M., Rafferty, T.J., Ragan, T.J. & Wieder, G.D.
401 WSI Mason, B.D., Williams, S.J., Matson, R.A., Josties, J.D., Eakens, P.D., Justice,
401 WSI M., Kilian, C.M. & Warner, R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18003+2154 A 1374 AB 1991 20 270 0.2 8.90 10.90 G0 NO 180017.93+215347.5
18003+2154 A 1374 AB 2007 21 49 0.4 8.90 10.90 G0 NO 180017.93+215347.5
18003+2154 A 1374 AB 2015 24 33 0.5 8.90 10.90 G0 NO 180017.93+215347.5
18003+2154 A 1374 AB 2017 26 213 0.5 8.90 10.90 G0 NO 180017.93+215347.5
18003+2154 A 1374 AB 2018 28 214 0.5 8.90 10.90 G0 NO 180017.93+215347.5
18003+2154 A 1374 AB 2019 29 213 0.5 8.90 10.90 G0 NO 180017.93+215347.5
18003+2154 A 1374 AB 2021 35 210 0.5 8.90 10.90 G0 NO 180017.93+215347.5

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

 
 
WDS 18003+2154 A 1374 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18003+2154 A 1374 AB : MEASURES
 
 
No records found.

 
 
WDS 18003+2154 : VIRTUAL EYEPIECE
 
 

18003+2154 A 1374A mag 8.9 Sp G0 18003+2154 WSI 106Ab mag 9.9 18003+2154 A 1374B sep 0.5 P.A. 208.30 mag 10.9 18003+2154 LBU 6C sep 72.2 P.A. 300.20 mag 11.33 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 18003+2154 : ALADIN DSS IMAGE @ 18h 00m 17.93s +21° 53' 47.5"
 
 
 
 
WDS 18003+2154 A 1374 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18003+2154 A 1374AB distance=1' 18003+2154 LBU 6AB,C distance=1' 18003+2154 WSI 106Aa,Ab distance=1' 18001+2201 BRT2440 distance=8' 17597+2204 FAL 59 distance=14' 17588+2155 HJ 2816 distance=21' 18001+2215 TDT 622 distance=21' 18019+2156 TDT 646 distance=23' 18015+2136 STF2264 distance=25' 18004+2112 A 1375 distance=43' 17597+2110 TDT 618 distance=45' 17584+2233 TDS 893 distance=48' 18022+2058 BUP 178AB distance=62' 18022+2058 BUP 178AC distance=62' 17561+2130 STT 339 distance=63' 18022+2055 LOC 2 distance=65' 17572+2247 UC 3453 distance=69' 18024+2050 TOK 56 distance=71' 18050+2127 STT 534 distance=71' 17589+2303 POU3332 distance=72' 18024+2302 POU3342 distance=74' 17551+2137 KPP4067 distance=75' 17571+2047 RAO 382 distance=81' 18058+2127 STT 341AB distance=82' 18058+2127 STT 341AB,E distance=82' 18058+2127 STT 341AB,F distance=82' 18058+2127 STT 341AB,G distance=82' 18058+2127 MET 82AH distance=82' 18058+2127 MET 82AI distance=82' 18058+2127 MET 82AJ distance=82' 18058+2127 STT 341AB,C distance=82' 18058+2127 STT 341AB,D distance=82' 17556+2102 TDT 577 distance=83' 18045+2255 TDT 664 distance=85' 17555+2250 GRV 970 distance=87' 17572+2312 POU3329 distance=90' 18029+2319 TDT 652 distance=92' 18040+2315 POU3345 distance=97' 17599+2331 POU3338AB distance=98' 18034+2324 POU3344 distance=101' 17561+2319 TDT 581 distance=104' 17546+2303 TDT 566 distance=106' 17595+2009 UC 3465 distance=106' 18011+2341 POU3340 distance=108' 17588+2343 POU3333 distance=111' 17565+2331 POU3327 distance=112' 18055+2320 ZHN 32 distance=112' 17534+2056 HO 562 distance=113' 17589+2349 POU3334 distance=116' 17544+2030 BRT2837 distance=117' 17586+2348 CBL 521 distance=118' 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 18003+2154 A 1374 AB 210 0.5 1
Show 18003+2154 LBU 6 AB,C 298 76.4 1
Show 18003+2154 WSI 106 Aa,Ab 267 0.0 1
Show 18001+2201 BRT2440 263 3.8 8
Show 17597+2204 FAL 59 332 16.6 14
Show 17588+2155 HJ 2816 140 9.2 21
Show 18001+2215 TDT 622 280 1.0 21
Show 18019+2156 TDT 646 193 0.4 23
Show 18015+2136 STF2264 255 6.4 25
Show 18004+2112 A 1375 92 1.8 43
Show 17597+2110 TDT 618 108 1.7 45
Show 17584+2233 TDS 893 280 0.8 48
Show 18022+2058 BUP 178 AB 282 146.7 62
Show 18022+2058 BUP 178 AC 155 145.9 62
Show 17561+2130 STT 339 169 4.2 63
Show 18022+2055 LOC 2 13 14.4 65
Show 17572+2247 UC 3453 56 14.2 69
Show 18024+2050 TOK 56 335 0.1 71
Show 18050+2127 STT 534 269 2.3 71
Show 17589+2303 POU3332 163 7.3 72
Show 18024+2302 POU3342 194 3.6 74
Show 17551+2137 KPP4067 301 31.9 75
Show 17571+2047 RAO 382 196 1.0 81
Show 18058+2127 STT 341 AB 89 0.3 82
Show 18058+2127 STT 341 AB,E 38 66.5 82
Show 18058+2127 STT 341 AB,F 357 111.6 82
Show 18058+2127 STT 341 AB,G 239 132.5 82
Show 18058+2127 MET 82 AH 63 2.6 82
Show 18058+2127 MET 82 AI 111 6.5 82
Show 18058+2127 MET 82 AJ 34 13.1 82
Show 18058+2127 STT 341 AB,C 171 28.2 82
Show 18058+2127 STT 341 AB,D 99 39.5 82
Show 17556+2102 TDT 577 150 2.3 83
Show 18045+2255 TDT 664 232 0.6 85
Show 17555+2250 GRV 970 153 44.4 87
Show 17572+2312 POU3329 197 2.8 90
Show 18029+2319 TDT 652 154 0.5 92
Show 18040+2315 POU3345 301 12.5 97
Show 17599+2331 POU3338 AB 318 9.5 98
Show 18034+2324 POU3344 64 11.3 101
Show 17561+2319 TDT 581 20 0.4 104
Show 17546+2303 TDT 566 78 2.8 106
Show 17595+2009 UC 3465 90 51.0 106
Show 18011+2341 POU3340 130 15.8 108
Show 17588+2343 POU3333 61 16.1 111
Show 17565+2331 POU3327 43 14.2 112
Show 18055+2320 ZHN 32 92 343.3 112
Show 17534+2056 HO 562 257 3.6 113
Show 17589+2349 POU3334 247 11.7 116
Show 17544+2030 BRT2837 281 2.8 117
Show 17586+2348 CBL 521 265 19.8 118

 
 
WDS 18003+2154 : COMPONENTS
 
 
  A Ab B
Ab pa=266.3°
sep=0.04"
 
B pa=208.3°
sep=0.51"
pa=204.0°
sep=0.49"
 
C pa=300.2°
sep=72.19"
pa=300.3°
sep=72.15"
pa=300.6°
sep=72.21"
 
 
18003+2154 A
 
 
Coord arcsec 2000 180017.93+215347.5 Mag 8.9 Spectral class G0 (yellow) PmRA -30.00
PmDE 14.0 SAO 85624 Tycho2 1566-01708-1 HD 341480
DM BD+21 3274
Tycho2
Tycho2 1566-01708-1 Pflag RAmdeg 270.07470939 DEmdeg 21.89653193
PmRA -16.8 PmDE 23.5 E RAmdeg 7 E DEmdeg 6
E pmRA 1.0 E pmDE 0.9 EpRAm 1990.71 EpDEm 1990.93
Num 11 Q RAmdeg 1.4 Q DEmdeg 0.8 Q pmRA 1.4
Q pmDE 0.9 BTmag 9.356 E BTmag 0.018 VTmag 8.611
E VTmag 0.012 Prox 772 TYC T HIP
CCDM RAdeg 270.07475306 DEdeg 21.89647722 EpRA 1990 1.49
EpDE 1990 1.58 E RAdeg 6.8 E DEdeg 6.4 Posflg
Corr -0.1
SAO
SAO 85624 DelFlag RA1950 PmRA1950 -0.0012
DE1950 PmDE1950 0.036 Vmag 8.6 SpType G0
Double code Source 35 CatNum 6241 DM BD+21 3274
DMcomp BDsup HD 341480 M HD 0
GC RA1950rad 4.70446941 DE1950rad 0.3821782 PmRA2000 -0.0011
PmDE2000 0.036
CCDM
Ccdm 18003+2154 RComp Comp A Note1
Note2 Discov num DRAs -0.19 DDEs -13.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.9 Sp G0 PmNote *
PmRA -33 PmDE 13 Dm number +21 3274 Cat1 BD
Name2 +21 1766 Cat2 AGK2/3 HD M HD
ADS BDS A10971 M ADS BDS N IDS IDS 17561N2154A
HIC
 
 
18003+2154 Ab
 
 
Coord arcsec 2000 180017.93+215347.5 Mag 9.9 Calc delta mag 0.5 Calc coord yes
 
 
18003+2154 B
 
 
Coord arcsec 2000 180017.91+215347.0 Mag 10.9 Calc delta mag 1.5 Calc coord yes
CCDM
Ccdm 18003+2154 RComp Comp B Note1
Note2 Discov num A 1374 DRAs DDEs
R dRAs Year 1958 Theta 335 Rho 0.6
Obs 14 Vmag 10.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10971 M ADS BDS N IDS IDS 17561N2154B
HIC
 
 
18003+2154 C
 
 
Coord arcsec 2000 180013.45+215423.8 Mag 11.33 PmRA -2.00 PmDE -6.0
Tycho2 1566-03357-1 Calc delta mag 1.93 Calc coord yes
Tycho2
Tycho2 1566-03357-1 Pflag RAmdeg 270.05448727 DEmdeg 21.90675098
PmRA -1.8 PmDE -9.2 E RAmdeg 44 E DEmdeg 41
E pmRA 1.2 E pmDE 1.2 EpRAm 1973.42 EpDEm 1975.63
Num 5 Q RAmdeg 1.0 Q DEmdeg 0.7 Q pmRA 1.0
Q pmDE 0.7 BTmag 11.975 E BTmag 0.087 VTmag 11.332
E VTmag 0.073 Prox 772 TYC HIP
CCDM RAdeg 270.05449222 DEdeg 21.90677250 EpRA 1990 1.46
EpDE 1990 1.59 E RAdeg 49.4 E DEdeg 44.5 Posflg
Corr -0.2