stampa
Login

Create your personal custom set of columns with all data you need.
Register here!


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
18384+6708
STF 2384 AB


Nearby doubles
18' : 18364+6655
TOK 323

38' : 18409+6633
LDS2419

41' : 18446+6649
MLB 286

56' : 18427+6618
TOI1825

65' : 18411+6810
MLB 355AB

69' : 18402+6815
KPP 813

74' : 18312+6608
ES 1911

89' : 18440+6830
CTI 134

93' : 18543+6706
MLB 287

93' : 18543+6705
MLB1080

98' : 18241+6619
TDT 832

103' : 18212+6651
KPP4105

108' : 18551+6757
LDS2424

110' : 18417+6520
LDS2748

110' : 18457+6849
TDT1039

111' : 18312+6526
KUI 86

112' : 18526+6556
LDS2423

114' : 18196+6743
MLB 413

115' : 18581+6716
MLB 414

120' : 18494+6528
ES 1912

120' : 18260+6534
UC 3580
Fafnir

121' : 18488+6853
LDS2421

130' : 18463+6909
SKF2739

133' : 18484+6908
WFC 254

135' : 18287+6506
HU 931AB

139' : 18514+6514
STF2423



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.

18384+6708 STF 2384 AB

 
 
18h 38m 23.66s +67° 07' 35.6" P.A. 307.00 sep 0.4 mag 8.31,8.95 Sp G5 dist. 53.82 pc (175.56 l.y.)
 
 
Coord 2000 18384+6708 Discov num STF2384 Comp AB Coord arcsec 2000 18 38 23.66 +67 07 35.6
Date first 1832 Date last 2020 Obs 102
Pa first 307 Pa last 306.9 P.A. Now (θ) 304°
Sep first 0.8 Sep last 0.36 Sep. Now (ρ) 0.39"
Mag pri 8.31 Mag sec 8.95 delta mag (ΔM) 0.64 Spectral class G5 (yellow)
Pri motion ra -138 Sec motion ra
Pri motion dec +196 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
18384+6708 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 17964 18 38 24 +67 07 36 STF 2384 AB 2020 102 307 0.4 8.31 8.95 0.64 Y <===
Show HD 173084 17964 18 38 24 +67 07 36 STF 2384 AB,C 2015 8 162 136.5 7.78 12.50 4.72
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 17964 HIP 91395 Tycho2 4227-00251-1
Gaia DR2 2258633214027998976 HD 173084 GC 25551 ADS 11568
BD BD+67 1087 Distance 53.82 Distance ly 175.56
 
 
ORBITAL ELEMENTS
 
 
Period (P)133.5y Periastron (T)1999.5y Semi-major axis (a)0.615a
Eccentricity (e)0.68 Inclination (i)86.5° Longitude of periastron (ω)343°
Node (Ω)129.2° Notesn ReferenceHei1996c
Equinox2000 Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 128.7 0.196
2001 129.9 0.203
2002 131.0 0.198
2003 132.3 0.183
2004 133.8 0.163
2005 135.8 0.138
2006 138.8 0.110
2007 144.0 0.081
2008 154.8 0.052
2009 186.2 0.029
2010 250.5 0.030
2011 279.2 0.055
2012 289.2 0.084
2013 294.0 0.113
2014 296.8 0.143
2015 298.7 0.173
2016 300.0 0.202
2017 301.0 0.230
2018 301.7 0.258
2019 302.4 0.286
2020 302.9 0.313
2021 303.3 0.339
2022 303.7 0.365
2023 304.0 0.390
2024 304.3 0.415
2025 304.5 0.439
2026 304.7 0.462
2027 304.9 0.485
2028 305.1 0.507
2029 305.3 0.529
2030 305.5 0.550


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


 
  


wds18384%2B6708a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18384+6708 STF 2384 AB : NOTES
 
 
discov_num notes refcode
STF2384 Unobserved periastron can be covered by speckle in near future. Sod1999
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 2.03 +/- 0.58, 2.10, and 0.95 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Hei1996c orb - Heintz, W.D. 1996AJ....111..412H
Hei1996c AJ 111, 412, 1996
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18384+6708 STF2384 AB 2000 101 131 0.2 8.31 8.95 G5 NOD 183823.87+670733.9
18384+6708 STF2384 AB 2020 102 307 0.4 8.31 8.95 G5 NO 183823.66+670735.6

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

 
 
WDS 18384+6708 STF 2384 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18384+6708 STF 2384 AB : MEASURES
 
 
No records found.

 
 
WDS 18384+6708 : VIRTUAL EYEPIECE
 
 

18384+6708 STF2384A mag 8.31 Sp G5 18384+6708 STF2384B sep 0.2 P.A. 332.60 mag 8.95 18384+6708 STF2384C sep 131.0 P.A. 172.90 mag 12.5 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 18384+6708 : ALADIN DSS IMAGE @ 18h 38m 23.66s +67° 07' 35.6"
 
 
 
 
WDS 18384+6708 STF 2384 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18384+6708 STF2384AB distance=0' 18364+6655 TOK 323 distance=18' 18409+6633 LDS2419 distance=38' 18446+6649 MLB 286 distance=41' 18427+6618 TOI1825 distance=56' 18411+6810 MLB 355AB distance=65' 18411+6810 MLB 355AC distance=65' 18402+6815 KPP 813 distance=69' 18312+6608 ES 1911 distance=74' 18440+6830 CTI 134 distance=89' 18543+6706 MLB 287 distance=93' 18543+6705 MLB1080 distance=93' 18241+6619 TDT 832 distance=98' 18212+6651 KPP4105 distance=103' 18551+6757 LDS2424 distance=108' 18417+6520 LDS2748 distance=110' 18457+6849 TDT1039 distance=110' 18312+6526 KUI 86 distance=111' 18526+6556 LDS2423 distance=112' 18196+6743 MLB 413 distance=114' 18581+6716 MLB 414 distance=115' 18494+6528 ES 1912 distance=120' 18260+6534 UC 3580 (Fafnir) distance=120' 18488+6853 LDS2421 distance=121' 18463+6909 SKF2739 distance=130' 18484+6908 WFC 254 distance=133' 18287+6506 HU 931AB distance=135' 18287+6506 STF2343AC distance=135' 18514+6514 STF2423 distance=139' 18540+6522 DAM 680 distance=142' 18216+6855 A 1169 distance=143' 18393+6931 TOI1859 distance=144' 18335+6929 MLR 95 distance=145' 18332+6929 SKF2738 distance=145' 18538+6509 MLB 215 distance=149' 18383+6937 CTI 848 distance=150' 18532+6507 DAM 127 distance=151' 18252+6455 STF2332 distance=151' 18549+6911 WFC 215 distance=155' 18530+6501 DAM 126 distance=155' 18497+6930 MLR 96 distance=156' 18335+6432 FAR 67Aa,Ab distance=159' 18335+6432 FAR 67AB distance=159' 18225+6924 UC 239 distance=163' 18430+6427 UC 3653 distance=164' 18393+6955 WFC 211 distance=168' 18426+6420 LDS2420 distance=170' 18497+6429 LDS2422 distance=173' 18396+6416 LDS2745 distance=173' 18325+6957 STF2366AB distance=173' 18325+6957 FOX9012AC distance=173' 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 18384+6708 STF2384 AB 307 0.4
Show 18384+6708 STF2384 AB,C 162 136.5
Show 18364+6655 TOK 323 116 181.1 18
Show 18409+6633 LDS2419 212 45.1 38
Show 18446+6649 MLB 286 290 3.8 41
Show 18427+6618 TOI1825 208 3.0 56
Show 18411+6810 MLB 355 AB 197 8.5 65
Show 18411+6810 MLB 355 AC 270 23.4 65
Show 18402+6815 KPP 813 166 7.0 69
Show 18312+6608 ES 1911 293 5.7 74
Show 18440+6830 CTI 134 326 6.8 89
Show 18543+6706 MLB 287 314 7.4 93
Show 18543+6705 MLB1080 6 10.0 93
Show 18241+6619 TDT 832 131 2.3 98
Show 18212+6651 KPP4105 151 1.5 103
Show 18551+6757 LDS2424 354 13.3 108
Show 18417+6520 LDS2748 226 50.5 110
Show 18457+6849 TDT1039 329 0.4 110
Show 18312+6526 KUI 86 44 23.0 111
Show 18526+6556 LDS2423 359 11.1 112
Show 18196+6743 MLB 413 147 2.6 114
Show 18581+6716 MLB 414 140 2.0 115
Show 18494+6528 ES 1912 21 7.6 120
Show Fafnir 18260+6534 UC 3580 208 24.4 120
Show 18488+6853 LDS2421 274 34.6 121
Show 18463+6909 SKF2739 227 6.8 130
Show 18484+6908 WFC 254 218 13.3 133
Show 18287+6506 HU 931 AB 82 0.5 135
Show 18287+6506 STF2343 AC 212 8.6 135
Show 18514+6514 STF2423 197 2.2 139
Show 18540+6522 DAM 680 117 15.7 142
Show 18216+6855 A 1169 304 1.0 143
Show 18393+6931 TOI1859 184 10.6 144
Show 18335+6929 MLR 95 44 0.2 145
Show 18332+6929 SKF2738 333 15.2 145
Show 18538+6509 MLB 215 193 3.4 149
Show 18383+6937 CTI 848 280 1.0 150
Show 18532+6507 DAM 127 55 3.5 151
Show 18252+6455 STF2332 260 11.6 151
Show 18549+6911 WFC 215 254 3.8 155
Show 18530+6501 DAM 126 236 9.6 155
Show 18497+6930 MLR 96 267 1.7 156
Show 18335+6432 FAR 67 Aa,Ab 222 0.1 159
Show 18335+6432 FAR 67 AB 129 1.8 159
Show 18225+6924 UC 239 264 23.8 163
Show 18430+6427 UC 3653 335 32.5 164
Show 18393+6955 WFC 211 68 9.5 168
Show 18426+6420 LDS2420 84 9.3 170
Show 18497+6429 LDS2422 94 75.9 173
Show 18396+6416 LDS2745 86 37.5 173
Show 18325+6957 STF2366 AB 333 29.8 173

 
 
WDS 18384+6708 : COMPONENTS
 
 
  A B
B pa=332.6°
sep=0.24"
 
C pa=172.9°
sep=130.99"
pa=172.8°
sep=131.22"
 
 
18384+6708 A
 
 
Coord arcsec 2000 183823.66+670735.6 Mag 8.31 Spectral class G5 (yellow) PmRA -138.00
PmDE 196.0 SAO 17964 HIP 91395 Tycho2 4227-00251-1
HD 173084 GC 25551 BD BD+67 1087
Tycho2
Tycho2 4227-00251-1 Pflag RAmdeg 279.59863835 DEmdeg 67.12652935
PmRA -130.0 PmDE 179.3 E RAmdeg 5 E DEmdeg 5
E pmRA 1.1 E pmDE 1.2 EpRAm 1991.40 EpDEm 1991.38
Num 10 Q RAmdeg 1.6 Q DEmdeg 0.8 Q pmRA 1.6
Q pmDE 0.7 BTmag 8.468 E BTmag 0.015 VTmag 7.782
E VTmag 0.011 Prox 999 TYC T HIP 91395
CCDM AB RAdeg 279.59941000 DEdeg 67.12611361 EpRA 1990 1.69
EpDE 1990 1.65 E RAdeg 5.3 E DEdeg 5.0 Posflg P
Corr -0.1
SAO
SAO 17964 DelFlag RA1950 PmRA1950 -0.023
DE1950 PmDE1950 0.195 Vmag 8 SpType G5
Double code Source 70 CatNum 25551 DM BD+67 1087
DMcomp BDsup HD 173084 M HD 0
GC 25551 RA1950rad 4.88015178 DE1950rad 1.17072716 PmRA2000 -0.0225
PmDE2000 0.192
Hipparcos
Catalog H HIP 91395 Proxy H RAhms 18 38 23.87
DEdms +67 07 33.9 Vmag 7.7 VarFlag R Vmag H
RAdeg 279.599 DEdeg 67.1261 AstroRef * Plx 19.11
CCDM 18384+6707 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 314 Rho 0.168 HD 173084 BD BD+67 1087
CD CP Dm number +67 1087 VIred 0.65
SpType G5 R SpType Coord arcsec 2000 183823.87+670733.9
Hipparcos 2
HIP 91395 Sn 55 So 3 Nc 2
RArad 4.8799309234 DErad 1.1715714132 Plx 18.58 PmRA -133.13
PmDE 182.96 E RArad 0.5 E DErad 0.5 E Plx 0.54
E pmRA 0.37 E pmDE 0.58 Hpmag 7.8327 E Hpmag 0.0008
SHp 0.008 VA 0 BV 0.635 E BV 0.011
VI 0.7
 
 
18384+6708 B
 
 
Coord arcsec 2000 183823.64+670735.8 Mag 8.95 Calc delta mag 0.64 Calc coord yes
 
 
18384+6708 C
 
 
Coord arcsec 2000 183826.44+670525.6 Mag 12.5 Calc delta mag 4.19 Calc coord yes