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Doubles in session


Current system
17539-3445
B 1871
V906 Sco


Nearby doubles
3' : 17538-3447
WFC 201AB

5' : 17536-3445
B 362

8' : 17533-3444
BU 1123

10' : 17532-3444
B 361

11' : 17535-3454
RST3986

11' : 17534-3454
SEE 342

17' : 17530-3458
B 1345

24' : 17522-3454
TDT 548

32' : 17519-3505
B 1343

38' : 17569-3445
JSP 935

38' : 17514-3506
VVV 2

40' : 17507-3444
BRT1741

44' : 17575-3448
JSP 755

47' : 17569-3514
BRT1744

48' : 17513-3411
OL 46

48' : 17574-3508
JSP 753

50' : 17565-3408
JSP 934

51' : 17504-3419
B 2419AB

53' : 17501-3509
B 2418

54' : 17510-3405
KPP1254

56' : 17535-3540
JSP 742

60' : 17565-3536
JSP 749

63' : 17533-3547
BRT3324AB

64' : 17513-3350
B 1342

65' : 17487-3457
B 1340

68' : 17489-3418
B 1341AB



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.

17539-3445 B 1871 (V906 Sco)

 
 
17h 53m 54.77s -34° 45' 09.8" P.A. 95.00 sep 0.3 mag 6.50,7.30 Sp B9V+B9V dist. 315.46 pc (1029.03 l.y.)
 
 
Coord 2000 17539-3445 Discov num B  1871 Comp Coord arcsec 2000 17 53 54.77 -34 45 09.8
Date first 1929 Date last 2021 Obs 17
Pa first 90 Pa last 94.9 P.A. Now (θ) 94.9°
Sep first 0.3 Sep last 0.298 Sep. Now (ρ) 0.298"
Mag pri 6.50 Mag sec 7.30 delta mag (ΔM) 0.8 Spectral class B9V+B9V (blue-white/blue-white)
Pri motion ra +007 Sec motion ra
Pri motion dec -010 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V906 Sco Constellation Scorpius SAO 209428 HIP 87616
Tycho2 7386-00562-1 Gaia DR2 4040825529908227072 HD 162724 HR 6662
GC 24314 CD CD-3412226 Distance 315.46 Distance ly 1029.03
 
 
ORBITAL ELEMENTS
 
 
Period (P)34.71y± 1.13 Periastron (T)1974.1y± 1.2 Semi-major axis (a)0.172a± 0.015
Eccentricity (e)0.001± 0.002 Inclination (i)80.5°± 6.8 Longitude of periastron (ω)183°± 9.7
Node (Ω)103°± 9.7 Notesn ReferenceZas2009
Equinox2000 Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 202.1 0.029
2001 244.9 0.045
2002 261.0 0.070
2003 268.6 0.096
2004 273.0 0.119
2005 276.0 0.139
2006 278.4 0.155
2007 280.3 0.166
2008 282.1 0.171
2009 283.8 0.171
2010 285.6 0.166
2011 287.6 0.155
2012 289.9 0.140
2013 292.9 0.120
2014 297.2 0.097
2015 304.5 0.071
2016 320.1 0.046
2017 1.4 0.029
2018 54.9 0.038
2019 77.1 0.062
2020 86.5 0.087
2021 91.7 0.112
2022 95.1 0.133
2023 97.6 0.150
2024 99.7 0.163
2025 101.5 0.170
2026 103.2 0.172
2027 104.9 0.169
2028 106.8 0.160
2029 109.0 0.146
2030 111.7 0.128


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


 
  


wds17539-3445a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 17539-3445 B 1871 (V906 Sco) : NOTES
 
 
discov_num notes refcode
B 1871 One component is a Beta Lyrae-type system, V906 Sco.
 
 
REFERENCES
 
 
refcode metd author reference
Zas2009 orb - Zasche, P., Wolf, M., Hartkopf, W.I., Svoboda, P., Uhlar, R., Liakos, A., & 2009AJ....138..664Z
Zas2009 Gazeas, K.
Zas2009 AJ 138, 664, 2009
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17539-3445 B 1871 1991 14 106 0.2 6.50 7.30 B9V+B9V NO 175354.77-344509.8
17539-3445 B 1871 2010 15 94 0.3 6.50 7.30 B9V+B9V NO 175354.77-344509.8
17539-3445 B 1871 2017 16 95 0.3 6.50 7.30 B9V+B9V NO 175354.77-344509.8
17539-3445 B 1871 2021 17 95 0.3 6.50 7.30 B9V+B9V NO 175354.77-344509.8

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

 
 
WDS 17539-3445 B 1871 (V906 Sco) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17539-3445 B 1871 (V906 Sco) : MEASURES
 
 
No records found.

 
 
WDS 17539-3445 (V906 Sco) : VIRTUAL EYEPIECE
 
 

17539-3445 B 1871A mag 6.5 Sp B9V 17539-3445 B 1871B sep 0.2 P.A. 96.00 mag 7.3 Sp B9V 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 17539-3445 (V906 Sco) : ALADIN DSS IMAGE @ 17h 53m 54.77s -34° 45' 09.8"
 
 
 
 
WDS 17539-3445 B 1871 (V906 Sco) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17539-3445 B 1871 distance=0' 17538-3447 WFC 201AB distance=3' 17538-3447 TDT 562Ba,Bb distance=4' 17536-3445 B 362 distance=5' 17533-3444 BU 1123 distance=8' 17532-3444 B 361 distance=10' 17535-3454 RST3986 distance=11' 17534-3454 SEE 342 distance=11' 17530-3458 B 1345 distance=17' 17522-3454 TDT 548 distance=24' 17519-3505 B 1343 distance=32' 17569-3445 JSP 935 distance=38' 17514-3506 VVV 2 distance=38' 17507-3444 BRT1741 distance=40' 17575-3448 JSP 755 distance=44' 17569-3514 BRT1744 distance=47' 17513-3411 OL 46 distance=48' 17574-3508 JSP 753 distance=48' 17565-3408 JSP 934 distance=50' 17504-3419 B 2419AB distance=51' 17504-3419 SIN 103AC distance=51' 17504-3419 SIN 103AD distance=51' 17501-3509 B 2418 distance=53' 17510-3405 KPP1254 distance=54' 17535-3540 JSP 742 distance=56' 17565-3536 JSP 749 distance=60' 17533-3547 BRT3325CD distance=63' 17533-3547 BRT3324AB distance=63' 17513-3350 B 1342 distance=64' 17487-3457 B 1340 distance=65' 17489-3418 B 1341AB distance=68' 17485-3458 BRT3321 distance=68' 17489-3418 B 1341BC distance=68' 17485-3428 OL 45 distance=68' 17542-3553 B 1346 distance=68' 17590-3514 BRT1746 distance=69' 17576-3352 B 1348 distance=71' 17509-3342 HDO 280AB distance=74' 17509-3342 HDO 280AC distance=74' 17509-3342 I 9019AD distance=74' 17482-3515 B 2415 distance=76' 17498-3347 RST3128 distance=77' 17482-3413 TDT 512 distance=78' 17483-3525 JSP 732 distance=80' 17590-3353 BRT1747 distance=83' 18000-3408 TDT 621 distance=85' 17535-3321 BRT1742 distance=85' 17585-3549 BRT1745 distance=86' 17480-3401 TDS 883 distance=86' 17577-3558 HDS2531 distance=87' 17587-3549 JSP 757 distance=87' 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 17539-3445 B 1871 95 0.3
Show 17538-3447 WFC 201 AB 209 34.7 3
Show 17538-3447 TDT 562 Ba,Bb 157 0.5 4
Show 17536-3445 B 362 227 5.2 5
Show 17533-3444 BU 1123 264 0.3 8
Show 17532-3444 B 361 301 3.9 10
Show 17535-3454 RST3986 75 0.9 11
Show 17534-3454 SEE 342 202 0.4 11
Show 17530-3458 B 1345 43 0.2 17
Show 17522-3454 TDT 548 140 2.5 24
Show 17519-3505 B 1343 167 3.4 32
Show 17569-3445 JSP 935 288 9.2 38
Show 17514-3506 VVV 2 22 35.1 38
Show 17507-3444 BRT1741 308 3.6 40
Show 17575-3448 JSP 755 157 3.4 44
Show 17569-3514 BRT1744 171 4.8 47
Show 17513-3411 OL 46 105 2.3 48
Show 17574-3508 JSP 753 147 2.1 48
Show 17565-3408 JSP 934 334 2.8 50
Show 17504-3419 B 2419 AB 227 6.2 51
Show 17504-3419 SIN 103 AC 265 77.9 51
Show 17504-3419 SIN 103 AD 99 93.4 51
Show 17501-3509 B 2418 31 7.0 53
Show 17510-3405 KPP1254 191 9.6 54
Show 17535-3540 JSP 742 359 0.3 56
Show 17565-3536 JSP 749 246 3.8 60
Show 17533-3547 BRT3325 CD 248 1.6 63
Show 17533-3547 BRT3324 AB 260 1.8 63
Show 17513-3350 B 1342 111 0.5 64
Show 17487-3457 B 1340 214 0.8 65
Show 17489-3418 B 1341 AB 286 6.2 68
Show 17485-3458 BRT3321 270 1.4 68
Show 17489-3418 B 1341 BC 358 5.4 68
Show 17485-3428 OL 45 39 2.2 68
Show 17542-3553 B 1346 158 0.6 68
Show 17590-3514 BRT1746 197 4.4 69
Show 17576-3352 B 1348 5 0.9 71
Show 17509-3342 HDO 280 AB 102 2.0 74
Show 17509-3342 HDO 280 AC 219 15.0 74
Show 17509-3342 I 9019 AD 198 33.7 74
Show 17482-3515 B 2415 173 8.3 76
Show 17498-3347 RST3128 27 1.0 77
Show 17482-3413 TDT 512 243 0.4 78
Show 17483-3525 JSP 732 230 3.8 80
Show 17590-3353 BRT1747 44 3.3 83
Show 18000-3408 TDT 621 308 0.6 85
Show 17535-3321 BRT1742 206 3.5 85
Show 17585-3549 BRT1745 295 5.3 86
Show 17480-3401 TDS 883 239 2.0 86
Show 17577-3558 HDS2531 211 0.6 87
Show 17587-3549 JSP 757 353 2.9 87

 
 
WDS 17539-3445 : COMPONENTS
 
 
  A
B pa=96.0°
sep=0.25"
 
 
17539-3445 A
 
 
Componente originario normalizzato AB Name V906 Sco Coord arcsec 2000 175354.77-344509.8 Mag 6.5
Spectral class B9V (blue-white) PmRA 7.00 PmDE -10.0 SAO 209428
HIP 87616 Tycho2 7386-00562-1 HD 162724 HR 6662
GC 24314 CD CD-3412226
Tycho2
Tycho2 7386-00562-1 Pflag RAmdeg 268.47821493 DEmdeg -34.75272186
PmRA 1.1 PmDE -6.4 E RAmdeg 4 E DEmdeg 5
E pmRA 0.8 E pmDE 0.8 EpRAm 1991.30 EpDEm 1990.94
Num 16 Q RAmdeg 1.2 Q DEmdeg 1.0 Q pmRA 1.4
Q pmDE 1.1 BTmag 5.972 E BTmag 0.015 VTmag 5.972
E VTmag 0.010 Prox 999 TYC HIP 87616
CCDM RAdeg 268.47821167 DEdeg -34.75270694 EpRA 1990 1.76
EpDE 1990 1.67 E RAdeg 4.0 E DEdeg 4.7 Posflg
Corr 0.2
SAO
SAO 209428 DelFlag RA1950 PmRA1950 0.0018
DE1950 PmDE1950 -0.003 Vmag 6.1 SpType B9
Double code Source 70 CatNum 24314 DM CD-3412226
DMcomp BDsup HD 162724 M HD 0
GC 24314 RA1950rad 4.67127903 DE1950rad -0.60638176 PmRA2000 0.0017
PmDE2000 -0.003
Hipparcos
Catalog H HIP 87616 Proxy RAhms 17 53 54.77
DEdms -34 45 09.8 Vmag 6 VarFlag 2 R Vmag G
RAdeg 268.478 DEdeg -34.7527 AstroRef Plx 3.23
CCDM 17539-3445 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 162724 BD
CD CD-3412226 CP Dm number -3412226 VIred 0.02
SpType B9IV/V R SpType Coord arcsec 2000 175354.77-344509.8
Hipparcos 2
HIP 87616 Sn 7 So 0 Nc 1
RArad 4.6858288322 DErad -0.6065492172 Plx 3.17 PmRA 1.94
PmDE -3.27 E RArad 0.81 E DErad 0.51 E Plx 0.6
E pmRA 0.87 E pmDE 0.59 Hpmag 5.9758 E Hpmag 0.0063
SHp 0.102 VA 1 BV -0.06 E BV 0.15
VI 0.02
CCDM
Ccdm 17539-3445 RComp Comp A Note1
Note2 Discov num DRAs 0.83 DDEs -10.6
R dRAs 41 Year Theta Rho
Obs 2 Vmag 6.5 Sp B9 PmNote
PmRA 12 PmDE -79 Dm number -3412226 Cat1 CD
Name2 209428 Cat2 SAO HD 162724 M HD
ADS BDS M ADS BDS N IDS IDS 17472S3444A
HIC 87616
 
 
17539-3445 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 175354.79-344509.8 Mag 7.3 Spectral class B9V (blue-white)
Calc delta mag 0.8 Calc coord yes
CCDM
Ccdm 17539-3445 RComp Comp B Note1
Note2 Discov num B 1871 DRAs DDEs
R dRAs Year 1957 Theta 111 Rho 0.1
Obs 9 Vmag 7.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17472S3444B
HIC 87616