stampa
Login

Create your own observing lists in a few clicks and save them.
Register here


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
18086+1838
HU 314
HD 166157


Nearby doubles
22' : 18101+1844
GWP2766

28' : 18074+1817
BPM 725

33' : 18103+1817
HU 316

37' : 18089+1802
BPM 729

40' : 18096+1801
BRT2441

41' : 18104+1910
KPP2480

45' : 18088+1923
TDT 707

61' : 18051+1912
KPP1682

64' : 18131+1841
CBL 167

64' : 18075+1940
STT 524

77' : 18122+1935
BRT2443

78' : 18052+1739
KPP4082

81' : 18140+1901
HEI 801

87' : 18088+1712
GWP2763

90' : 18069+1712
BPM 724

93' : 18134+1941
GWP2769

94' : 18113+1713
HU 317

96' : 18145+1752
BPM 746

98' : 18154+1850
TDT 761

98' : 18024+1758
BPM 717

98' : 18086+1700
HDS2555

99' : 18155+1825
BPM 750

99' : 18091+1700
TDS 907

101' : 18066+2014
J 1132

102' : 18157+1822
UC 3536

106' : 18019+1754
LEP 156



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.

18086+1838 HU 314 (HD 166157)

 
 
18h 08m 38.26s +18° 38' 08.8" P.A. 71.00 sep 0.3 mag 8.84,9.22 Sp B9.5V dist. 1190.48 pc (3883.35 l.y.)
 
 
Coord 2000 18086+1838 Discov num HU  314 Comp Coord arcsec 2000 18 08 38.26 +18 38 08.8
Date first 1901 Date last 2016 Obs 49
Pa first 147 Pa last 70.9 P.A. Now (θ) 70.9°
Sep first 0.4 Sep last 0.271 Sep. Now (ρ) 0.271"
Mag pri 8.84 Mag sec 9.22 delta mag (ΔM) 0.38 Spectral class B9.5V (blue-white)
Pri motion ra +006 Sec motion ra
Pri motion dec -002 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 166157 Constellation Hercules SAO 103419 HIP 88875
Tycho2 1571-00365-1 HD 166157 ADS 11098 BD BD+18 3566
Distance 1190.48 Distance ly 3883.35
 
 
ORBITAL ELEMENTS
 
 
Period (P)1075y Periastron (T)1885.7y Semi-major axis (a)0.602a
Eccentricity (e)0.2 Inclination (i)123.1° Longitude of periastron (ω)31.7°
Node (Ω)170° Notes ReferenceZir2015a
Equinox2000 Last observation2010 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 84.9 0.284
2001 84.1 0.284
2002 83.3 0.285
2003 82.5 0.285
2004 81.7 0.285
2005 80.9 0.285
2006 80.1 0.286
2007 79.3 0.286
2008 78.5 0.286
2009 77.7 0.287
2010 76.9 0.287
2011 76.1 0.288
2012 75.4 0.288
2013 74.6 0.289
2014 73.8 0.289
2015 73.0 0.290
2016 72.3 0.291
2017 71.5 0.292
2018 70.7 0.292
2019 70.0 0.293
2020 69.2 0.294
2021 68.5 0.295
2022 67.7 0.296
2023 67.0 0.297
2024 66.2 0.298
2025 65.5 0.299
2026 64.8 0.300
2027 64.1 0.301
2028 63.4 0.302
2029 62.6 0.303
2030 61.9 0.304


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


 
  


wds18086%2B1838a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18086+1838 HU 314 (HD 166157) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Zir2015a orb - Zirm, H. 2015IAUDS.185....1Z
Zir2015a Inf. Circ. 185, 1, 2015
 
 
DISCOVERER
 
 
idgroup discov author
1 HU Hussey, W.F.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18086+1838 HU 314 2005 43 81 0.3 8.84 9.22 B9.5V 180838.26+183808.8
18086+1838 HU 314 2010 44 79 0.3 8.84 9.22 B9.5V 180838.26+183808.8
18086+1838 HU 314 2016 48 71 0.3 8.84 9.22 B9.5V O 180838.26+183808.8

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

 
 
WDS 18086+1838 HU 314 (HD 166157) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18086+1838 HU 314 (HD 166157) : MEASURES
 
 
No records found.

 
 
WDS 18086+1838 (HD 166157) : VIRTUAL EYEPIECE
 
 

18086+1838 HU 314A mag 8.84 Sp B9.5V 18086+1838 HU 314B sep 0.3 P.A. 69.90 mag 9.22 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 18086+1838 (HD 166157) : ALADIN DSS IMAGE @ 18h 08m 38.26s +18° 38' 08.8"
 
 
 
 
WDS 18086+1838 HU 314 (HD 166157) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18086+1838 HU 314 distance=1' 18101+1844 GWP2766 distance=22' 18074+1817 BPM 725 distance=28' 18103+1817 HU 316 distance=33' 18089+1802 BPM 729 distance=37' 18096+1801 BRT2441 distance=40' 18104+1910 KPP2480 distance=41' 18088+1923 TDT 707 distance=45' 18051+1912 KPP1682 distance=61' 18131+1841 CBL 167 distance=64' 18075+1940 STT 524 distance=64' 18122+1935 BRT2443 distance=77' 18052+1739 KPP4082 distance=78' 18140+1901 HEI 801 distance=81' 18088+1712 GWP2763 distance=87' 18069+1712 BPM 724 distance=90' 18134+1941 GWP2769 distance=93' 18113+1713 HU 317 distance=94' 18145+1752 BPM 746 distance=96' 18154+1850 TDT 761 distance=98' 18024+1758 BPM 717 distance=98' 18086+1700 HDS2555 distance=98' 18155+1825 BPM 750 distance=99' 18091+1700 TDS 907 distance=99' 18066+2014 J 1132 distance=101' 18157+1822 UC 3536 distance=102' 18019+1754 LEP 156 distance=106' 18014+1811 GWP2756 distance=107' 18136+1715 RAO 384 distance=110' 18144+1953 HDS2576 distance=111' 18093+1648 BPM 733 distance=111' 18125+1701 BPMA 52 distance=112' 18164+1832 LDS1009 distance=112' 18060+1651 GWP2758 distance=114' 18112+1648 LDS1006 distance=114' 18154+1946 STT 346 distance=118' 18140+2017 HO 268 distance=125' 18016+1953 RAO 383 distance=126' 18007+1736 COU 810 distance=130' 18088+2049 AGC 8 distance=131' 18101+1629 STF2289 distance=132' 18031+1654 BPM 718 distance=132' 18005+1734 COU 809 distance=133' 18153+2012 J 2124 distance=134' 18134+1643 HEI 170 distance=136' 18119+1630 GWP2767 distance=136' 18092+1623 UC 3507 distance=136' 18008+1721 GWP2752 distance=137' 18103+1623 UC 3513 distance=137' 17595+1753 BPM 715 distance=138' 18054+1624 A 2093 distance=143' 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 18086+1838 HU 314 71 0.3 1
Show 18101+1844 GWP2766 205 9.6 22
Show 18074+1817 BPM 725 278 17.0 28
Show 18103+1817 HU 316 157 1.8 33
Show 18089+1802 BPM 729 92 23.4 37
Show 18096+1801 BRT2441 26 4.8 40
Show 18104+1910 KPP2480 153 22.2 41
Show 18088+1923 TDT 707 67 0.6 45
Show 18051+1912 KPP1682 17 13.0 61
Show 18131+1841 CBL 167 260 34.3 64
Show 18075+1940 STT 524 206 0.5 64
Show 18122+1935 BRT2443 117 6.3 77
Show 18052+1739 KPP4082 45 31.7 78
Show 18140+1901 HEI 801 173 2.4 81
Show 18088+1712 GWP2763 317 7.7 87
Show 18069+1712 BPM 724 1 74.0 90
Show 18134+1941 GWP2769 117 92.1 93
Show 18113+1713 HU 317 205 1.5 94
Show 18145+1752 BPM 746 116 106.5 96
Show 18154+1850 TDT 761 129 0.5 98
Show 18024+1758 BPM 717 250 115.6 98
Show 18086+1700 HDS2555 113 0.5 98
Show 18155+1825 BPM 750 175 101.0 99
Show 18091+1700 TDS 907 149 0.9 99
Show 18066+2014 J 1132 140 3.2 101
Show 18157+1822 UC 3536 44 24.8 102
Show 18019+1754 LEP 156 92 5.0 106
Show 18014+1811 GWP2756 318 261.9 107
Show 18136+1715 RAO 384 196 0.7 110
Show 18144+1953 HDS2576 68 1.0 111
Show 18093+1648 BPM 733 122 57.7 111
Show 18125+1701 BPMA 52 73 266.4 112
Show 18164+1832 LDS1009 250 27.2 112
Show 18060+1651 GWP2758 149 9.0 114
Show 18112+1648 LDS1006 315 32.9 114
Show 18154+1946 STT 346 329 5.3 118
Show 18140+2017 HO 268 180 1.0 125
Show 18016+1953 RAO 383 223 0.6 126
Show 18007+1736 COU 810 99 0.2 130
Show 18088+2049 AGC 8 136 23.5 131
Show 18101+1629 STF2289 217 1.2 132
Show 18031+1654 BPM 718 52 42.0 132
Show 18005+1734 COU 809 26 2.1 133
Show 18153+2012 J 2124 348 3.9 134
Show 18134+1643 HEI 170 313 0.3 136
Show 18119+1630 GWP2767 248 12.2 136
Show 18092+1623 UC 3507 60 106.0 136
Show 18008+1721 GWP2752 83 479.5 137
Show 18103+1623 UC 3513 76 82.3 137
Show 17595+1753 BPM 715 26 115.9 138
Show 18054+1624 A 2093 227 0.6 143

 
 
WDS 18086+1838 : COMPONENTS
 
 
  A
B pa=69.9°
sep=0.26"
 
 
18086+1838 A
 
 
Componente originario normalizzato AB Name HD 166157 Coord arcsec 2000 180838.26+183808.8 Mag 8.84
Spectral class B9.5V (blue-white) PmRA 6.00 PmDE -2.0 SAO 103419
HIP 88875 Tycho2 1571-00365-1 HD 166157 BD BD+18 3566
Tycho2
Tycho2 1571-00365-1 Pflag RAmdeg 272.15940949 DEmdeg 18.63574953
PmRA -2.0 PmDE -7.7 E RAmdeg 5 E DEmdeg 5
E pmRA 1.2 E pmDE 1.1 EpRAm 1991.28 EpDEm 1991.22
Num 10 Q RAmdeg 0.6 Q DEmdeg 1.0 Q pmRA 0.7
Q pmDE 0.9 BTmag 8.279 E BTmag 0.015 VTmag 8.275
E VTmag 0.012 Prox 999 TYC T HIP 88875
CCDM AB RAdeg 272.15941417 DEdeg 18.63576778 EpRA 1990 1.59
EpDE 1990 1.55 E RAdeg 5.2 E DEdeg 5.3 Posflg P
Corr 0.0
SAO
SAO 103419 DelFlag RA1950 PmRA1950 0.0005
DE1950 PmDE1950 -0.022 Vmag 8 SpType A0
Double code Source 28 CatNum 6621 DM BD+18 3566
DMcomp BDsup HD 166157 M HD 0
GC RA1950rad 4.74053329 DE1950rad 0.32509556 PmRA2000 0.0006
PmDE2000 -0.021
Hipparcos
Catalog H HIP 88875 Proxy H RAhms 18 08 38.26
DEdms +18 38 08.8 Vmag 8.25 VarFlag R Vmag H
RAdeg 272.159 DEdeg 18.6358 AstroRef * Plx 0.36
CCDM 18086+1838 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 91 Rho 0.279 HD 166157 BD BD+18 3566
CD CP Dm number +18 3566 VIred 0.04
SpType A0 R SpType Coord arcsec 2000 180838.26+183808.8
Hipparcos 2
HIP 88875 Sn 55 So 3 Nc 2
RArad 4.7500778657 DErad 0.3252555085 Plx 0.84 PmRA -0.68
PmDE -6.86 E RArad 0.63 E DErad 0.63 E Plx 0.93
E pmRA 0.73 E pmDE 0.74 Hpmag 8.2583 E Hpmag 0.0018
SHp 0.014 VA 0 BV 0.008 E BV 0.013
VI 0.03
CCDM
Ccdm 18086+1838 RComp Comp A Note1
Note2 Discov num DRAs 2.29 DDEs 8.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.6 Sp A0 PmNote *
PmRA 7 PmDE -7 Dm number +18 3566 Cat1 BD
Name2 +18 1658 Cat2 AGK2/3 HD 166157 M HD
ADS BDS A11098 M ADS BDS N IDS IDS 18043N1837A
HIC 88875
 
 
18086+1838 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 180838.28+183808.9 Mag 9.22 Calc delta mag 0.38
Calc coord yes
CCDM
Ccdm 18086+1838 RComp Comp B Note1
Note2 Discov num HU 314 DRAs DDEs
R dRAs Year 1958 Theta 119 Rho 0.3
Obs 18 Vmag 8.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11098 M ADS BDS N IDS IDS 18043N1837B
HIC 88875