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Doubles in session


Current system
18118+3327
B 2545 AB


Nearby doubles
13' : 18109+3321
COU1005AB

18' : 18130+3318
COU1006

30' : 18111+3258
ES 185

34' : 18104+3356
SEI 559

37' : 18145+3313
COU1007

38' : 18111+3403
SEI 560

40' : 18102+3402
STF2291

41' : 18118+3406
DAM 630

45' : 18136+3249
GIC 150

47' : 18111+3241
LEP 87AB

48' : 18133+3244
TDT 742

50' : 18089+3254
ES 184AB

52' : 18119+3417
SEI 561

57' : 18145+3249
HU 927

60' : 18070+3323
TDT 689

62' : 18118+3224
LDS4778

68' : 18104+3221
HO 81

70' : 18140+3223
TDT 752

71' : 18062+3326
HO 79

72' : 18094+3432
HU 1187

80' : 18139+3212
TDT 749

80' : 18154+3433
SEI 562

81' : 18175+3403
SEI 563

87' : 18071+3223
HJ 1314

87' : 18049+3316
HO 78

93' : 18121+3459
TDT 734



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.

18118+3327 B 2545 AB

 
 
18h 11m 45.11s +33° 26' 49.3" P.A. 241.00 sep 0.1 mag 6.50,6.80 Sp A3V dist. 237.53 pc (774.82 l.y.)
 
 
Coord 2000 18118+3327 Discov num B  2545 Comp AB Coord arcsec 2000 18 11 45.11 +33 26 49.3
Date first 1958 Date last 2007 Obs 66
Pa first 233 Pa last 240.7 P.A. Now (θ) 198.9°
Sep first 0.1 Sep last 0.104 Sep. Now (ρ) 0.055"
Mag pri 6.50 Mag sec 6.80 delta mag (ΔM) 0.3 Spectral class A3V (white)
Pri motion ra +018 Sec motion ra
Pri motion dec +015 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
18118+3327 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 66733 18 11 45 +33 26 49 B 2545 AB 2007 66 241 0.1 6.50 6.80 0.30 Y <===
Show NSV10363 66733 18 11 45 +33 26 49 HO 82 AB,C 2016 34 221 0.7 6.08 8.99 2.91
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name NSV10363 Constellation Hercules SAO 66733 HIP 89156
Tycho2 2626-01763-1 Gaia DR2 4604984976092450816 HD 166988 HR 6814
GC 24829 ADS 11149 BD BD+33 3044 Distance 237.53
Distance ly 774.82
 
 
ORBITAL ELEMENTS
 
 
Period (P)23.9y± 1 Periastron (T)1971.81y± 0.81 Semi-major axis (a)0.062a± 0.0005
Eccentricity (e)0.706± 0.055 Inclination (i)37.9°± 5.8 Longitude of periastron (ω)172.1°± 19
Node (Ω)244.1°± 19 Notesn ReferenceHrt1989
Equinox2000 Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 206.9 0.066
2001 213.4 0.075
2002 218.5 0.084
2003 222.7 0.091
2004 226.5 0.096
2005 229.8 0.100
2006 232.9 0.103
2007 235.9 0.105
2008 238.8 0.105
2009 241.8 0.105
2010 244.8 0.103
2011 247.9 0.100
2012 251.3 0.095
2013 255.1 0.089
2014 259.5 0.082
2015 264.9 0.073
2016 272.1 0.062
2017 282.9 0.048
2018 303.3 0.033
2019 358.0 0.019
2020 94.2 0.019
2021 158.0 0.028
2022 185.1 0.042
2023 198.9 0.055
2024 207.6 0.067
2025 214.0 0.076
2026 219.0 0.084
2027 223.1 0.091
2028 226.8 0.097
2029 230.1 0.101
2030 233.2 0.103


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


 
  


wds18118%2B3327a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18118+3327 B 2545 AB : NOTES
 
 
discov_num notes refcode
B 2545 Called a spectroscopic binary. Variation undoubtedly due to motion in
the visual orbit.
1979.360: Theta incorrectly given as 42.4 deg in McAlister & Hendry. McA1982d
1980.4768: Rho incorrectly given as 0".091 in McAlister et al (1983) McA1983
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 6.14 +/- 2.37, 7.96, and 2.00 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Hrt1989 orb - Hartkopf, W.I., McAlister, H.A., & Franz, O.G. 1989AJ.....98.2275B
Hrt1989 AJ 98, 1014, 1989
McA1982d Sc j McAlister, H.A. & Hendry, E.M. 1982ApJS...49..267M
McA1982d ApJS 49, 267, 1982
McA1983 Sc j McAlister, H.A., Hendry, E.M., Hartkopf, W.I., Campbell, B.G., & Fekel, F.C. 1983ApJS...51..309M
McA1983 ApJS 51, 309, 1983
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
212 HO Hough, G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18118+3327 B 2545 AB 2001 64 43 0.1 6.50 6.80 A3V NOD 181145.11+332649.3
18118+3327 B 2545 AB 2006 65 239 0.1 6.50 6.80 A3V NOD 181145.11+332649.3
18118+3327 B 2545 AB 2007 66 241 0.1 6.50 6.80 A3V NOD 181145.11+332649.3

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

 
 
WDS 18118+3327 B 2545 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18118+3327 B 2545 AB : MEASURES
 
 
No records found.

 
 
WDS 18118+3327 : VIRTUAL EYEPIECE
 
 

18118+3327 B 2545A mag 6.5 Sp A3V 18118+3327 B 2545B sep 0.1 P.A. 236.10 mag 6.8 18118+3327 HO 82C sep 0.7 P.A. 215.70 mag 8.99 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 18118+3327 : ALADIN DSS IMAGE @ 18h 11m 45.11s +33° 26' 49.3"
 
 
 
 
WDS 18118+3327 B 2545 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18118+3327 B 2545AB distance=0' 18109+3321 COU1005AB distance=13' 18109+3321 COU1005AB,C distance=13' 18130+3318 COU1006 distance=18' 18111+3258 ES 185 distance=30' 18104+3356 SEI 559 distance=34' 18145+3313 COU1007 distance=37' 18111+3403 SEI 560 distance=38' 18102+3402 STF2291 distance=40' 18118+3406 DAM 630 distance=41' 18136+3249 GIC 150 distance=45' 18111+3241 LEP 87AB distance=47' 18133+3244 TDT 742 distance=48' 18089+3254 ES 184AB distance=50' 18089+3254 LNA 5Aa,Ab distance=50' 18119+3417 SEI 561 distance=52' 18145+3249 HU 927 distance=57' 18070+3323 TDT 689 distance=60' 18118+3224 LDS4778 distance=62' 18111+3241 TOK 615BC distance=62' 18104+3221 HO 81 distance=68' 18140+3223 TDT 752 distance=70' 18062+3326 HO 79 distance=71' 18094+3432 HU 1187 distance=72' 18139+3212 TDT 749 distance=80' 18154+3433 SEI 562 distance=80' 18175+3403 SEI 563 distance=81' 18071+3223 HJ 1314 distance=87' 18049+3316 HO 78 distance=87' 18121+3459 TDT 734 distance=93' 18070+3440 ES 2286 distance=95' 18081+3449 POP 211 distance=96' 18195+3336 COU1010 distance=98' 18189+3248 COU1009 distance=98' 18101+3150 BRT 259 distance=99' 18095+3151 KPP 951 distance=100' 18114+3506 ALI 140 distance=101' 18165+3451 DAM 105 distance=103' 18052+3430 CBL 74AB distance=104' 18094+3144 A 237AB distance=107' 18094+3144 A 237AC distance=107' 18094+3144 A 237AD distance=107' 18094+3144 DAM 807AF distance=107' 18047+3227 SEI 556 distance=108' 18171+3453 COU 12 distance=108' 18094+3144 A 237DE distance=109' 18090+3511 HO 80 distance=109' 18034+3400 TDT 657 distance=110' 18038+3240 UC 3483 distance=111' 18126+3135 STF2295 distance=113' 18177+3455 ES 2231 distance=115' 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 18118+3327 B 2545 AB 241 0.1
Show 18118+3327 HO 82 AB,C 221 0.7
Show 18109+3321 COU1005 AB 333 0.2 13
Show 18109+3321 COU1005 AB,C 25 1.9 13
Show 18130+3318 COU1006 337 0.5 18
Show 18111+3258 ES 185 285 12.1 30
Show 18104+3356 SEI 559 171 11.5 34
Show 18145+3313 COU1007 38 0.3 37
Show 18111+3403 SEI 560 35 30.3 38
Show 18102+3402 STF2291 340 29.9 40
Show 18118+3406 DAM 630 40 15.0 41
Show 18136+3249 GIC 150 77 54.9 45
Show 18111+3241 LEP 87 AB 148 999.9 47
Show 18133+3244 TDT 742 315 2.4 48
Show 18089+3254 ES 184 AB 159 4.9 50
Show 18089+3254 LNA 5 Aa,Ab 143 0.1 50
Show 18119+3417 SEI 561 155 20.8 52
Show 18145+3249 HU 927 101 0.4 57
Show 18070+3323 TDT 689 62 0.4 60
Show 18118+3224 LDS4778 63 48.6 62
Show 18111+3241 TOK 615 BC 57 49.2 62
Show 18104+3221 HO 81 215 3.3 68
Show 18140+3223 TDT 752 237 1.9 70
Show 18062+3326 HO 79 61 0.2 71
Show 18094+3432 HU 1187 77 2.1 72
Show 18139+3212 TDT 749 15 0.2 80
Show 18154+3433 SEI 562 327 27.2 80
Show 18175+3403 SEI 563 94 13.3 81
Show 18071+3223 HJ 1314 152 17.6 87
Show 18049+3316 HO 78 205 8.5 87
Show 18121+3459 TDT 734 165 2.1 93
Show 18070+3440 ES 2286 176 5.4 95
Show 18081+3449 POP 211 292 2.9 96
Show 18195+3336 COU1010 163 1.2 98
Show 18189+3248 COU1009 263 2.4 98
Show 18101+3150 BRT 259 278 4.0 99
Show 18095+3151 KPP 951 259 7.8 100
Show 18114+3506 ALI 140 250 14.3 101
Show 18165+3451 DAM 105 146 7.0 103
Show 18052+3430 CBL 74 AB 245 11.2 104
Show 18094+3144 A 237 AB 103 2.2 107
Show 18094+3144 A 237 AC 358 28.7 107
Show 18094+3144 A 237 AD 221 101.8 107
Show 18094+3144 DAM 807 AF 63 10.6 107
Show 18047+3227 SEI 556 225 13.1 108
Show 18171+3453 COU 12 209 1.9 108
Show 18094+3144 A 237 DE 308 8.2 109
Show 18090+3511 HO 80 188 0.5 109
Show 18034+3400 TDT 657 330 3.4 110
Show 18038+3240 UC 3483 310 20.2 111
Show 18126+3135 STF2295 173 8.3 113

 
 
WDS 18118+3327 : COMPONENTS
 
 
  A B
B pa=236.1°
sep=0.09"
 
C pa=215.7°
sep=0.65"
pa=212.5°
sep=0.57"
 
 
18118+3327 A
 
 
Coord arcsec 2000 181145.11+332649.3 Mag 6.5 Spectral class A3V (white) PmRA 18.00
PmDE 15.0 SAO 66733 HIP 89156 Tycho2 2626-01763-1
HD 166988 HR 6814 GC 24829 BD BD+33 3044
Tycho2
Tycho2 2626-01763-1 Pflag RAmdeg 272.93799826 DEmdeg 33.44705292
PmRA 13.1 PmDE 12.6 E RAmdeg 4 E DEmdeg 3
E pmRA 1.2 E pmDE 1.1 EpRAm 1991.35 EpDEm 1991.60
Num 12 Q RAmdeg 1.8 Q DEmdeg 1.0 Q pmRA 1.6
Q pmDE 1.1 BTmag 6.029 E BTmag 0.014 VTmag 5.984
E VTmag 0.009 Prox 999 TYC T HIP 89156
CCDM AC RAdeg 272.93796111 DEdeg 33.44702389 EpRA 1990 1.51
EpDE 1990 1.69 E RAdeg 3.5 E DEdeg 3.4 Posflg P
Corr -0.1
SAO
SAO 66733 DelFlag RA1950 PmRA1950 0.0007
DE1950 PmDE1950 0.009 Vmag 5.9 SpType A2
Double code Source 70 CatNum 24829 DM BD+33 3044
DMcomp BDsup HD 166988 M HD 0
GC 24829 RA1950rad 4.7556815 DE1950rad 0.58352728 PmRA2000 0.001
PmDE2000 0.01
Hipparcos
Catalog H HIP 89156 Proxy H RAhms 18 11 45.11
DEdms +33 26 49.3 Vmag 5.98 VarFlag R Vmag H
RAdeg 272.938 DEdeg 33.447 AstroRef A Plx 4.27
CCDM 18118+3327 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AC
Theta 218 Rho 0.713 HD 166988 BD BD+33 3044
CD CP Dm number +33 3044 VIred 0.04
SpType A3V R SpType Coord arcsec 2000 181145.11+332649.3
Hipparcos 2
HIP 89156 Sn 15 So 3 Nc 2
RArad 4.7636661435 DErad 0.5837607586 Plx 4.21 PmRA 13.59
PmDE 12.56 E RArad 0.3 E DErad 0.33 E Plx 0.39
E pmRA 0.34 E pmDE 0.41 Hpmag 6.0034 E Hpmag 0.0008
SHp 0.007 VA 0 BV 0.045 E BV 0.004
VI 0.06
CCDM
Ccdm 18118+3327 RComp Comp A Note1
Note2 Discov num DRAs -2.94 DDEs -10.8
R dRAs 10 Year Theta Rho
Obs 3 Vmag 6.4 Sp A2 PmNote *
PmRA -1 PmDE 6 Dm number +33 3044 Cat1 BD
Name2 +33 1604 Cat2 AGK2/3 HD 166988 M HD
ADS BDS A11149 M ADS BDS N IDS IDS 18081N3325A
HIC 89156
 
 
18118+3327 B
 
 
Coord arcsec 2000 181145.10+332649.2 Mag 6.8 Calc delta mag 0.3 Calc coord yes
CCDM
Ccdm 18118+3327 RComp Comp B Note1 *
Note2 Discov num B 2545 DRAs DDEs
R dRAs Year 1960 Theta 242 Rho 0.1
Obs 2 Vmag 6.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18081N3325B
HIC 89156
 
 
18118+3327 C
 
 
Coord arcsec 2000 181145.08+332648.8 Mag 8.99 Calc delta mag 2.49 Calc coord yes
CCDM
Ccdm 18118+3327 RComp Comp C Note1
Note2 Discov num HO 82 DRAs DDEs
R dRAs Year 1960 Theta 218 Rho 0.8
Obs 12 Vmag 9.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11149 M ADS BDS N IDS IDS 18081N3325C
HIC 89156