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Doubles in session


Current system
08213-0136
STF 1216
HD 70340


Nearby doubles
9' : 08219-0139
WZ 12

24' : 08201-0150
J 3288

25' : 08198-0144
BAL 500

25' : 08201-0149
J 3287

38' : 08238-0133
BAL 502

45' : 08242-0150
GWP1014

56' : 08246-0109
B 2527AB

58' : 08202-0232
LDS3786

70' : 08255-0207
A 1336

79' : 08259-0216
BAL 504

80' : 08248-0236
BRT 419

98' : 08207-0001
SLW 241

99' : 08149-0120
J 2055

101' : 08275-0216
SLN 64

108' : 08143-0149
BAL 499

113' : 08140-0115
TDS5634

118' : 08197-0019
GAU 12

118' : 08170+0001
CHM 5AB

119' : 08136-0159
HJ 778

119' : 08135-0123
HJ 85

121' : 08285-0231
A 551AB

122' : 08164-0314
HWE 21

124' : 08177-0015
BAL1136

124' : 08166+0005
RST5288

129' : 08166+0011
RST5289

129' : 08180-0022
GAU 11



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.

08213-0136 STF 1216 (HD 70340)

 
 
08h 21m 20.28s -01° 36' 07.3" P.A. 311.00 sep 0.5 mag 6.85,7.88 Sp A2Vpn: dist. 156.49 pc (510.47 l.y.)
 
 
Coord 2000 08213-0136 Discov num STF1216 Comp Coord arcsec 2000 08 21 20.28 -01 36 07.3
Date first 1825 Date last 2020 Obs 188
Pa first 110 Pa last 310.6 P.A. Now (θ) 315°
Sep first 0.5 Sep last 0.538 Sep. Now (ρ) 0.518"
Mag pri 6.85 Mag sec 7.88 delta mag (ΔM) 1.03 Spectral class A2Vpn: (white)
Pri motion ra -009 Sec motion ra -009
Pri motion dec -028 Sec motion dec -028
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 70340 Constellation Hydra SAO 135804 HIP 40941
Tycho2 4848-00292-1 HD 70340 HR 3278 GC 11387
ADS 6762 BD BD-01 2017 Distance 156.49 Distance ly 510.47
 
 
ORBITAL ELEMENTS
 
 
Period (P)402y± 15 Periastron (T)2322y± 26 Semi-major axis (a)0.565a± 0.016
Eccentricity (e)0.109± 0.018 Inclination (i)31.7°± 1.6 Longitude of periastron (ω)310.8°± 9.5
Node (Ω)264.1°± 4.8 Notesn ReferenceTok2014a
Equinox2000 Last observation2013 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 294.6 0.527
2001 295.5 0.526
2002 296.4 0.526
2003 297.3 0.526
2004 298.1 0.525
2005 299.0 0.525
2006 299.9 0.525
2007 300.8 0.524
2008 301.6 0.524
2009 302.5 0.523
2010 303.4 0.523
2011 304.3 0.523
2012 305.2 0.522
2013 306.1 0.522
2014 307.0 0.521
2015 307.8 0.521
2016 308.7 0.520
2017 309.6 0.520
2018 310.5 0.520
2019 311.4 0.519
2020 312.3 0.519
2021 313.2 0.518
2022 314.1 0.518
2023 315.0 0.518
2024 315.9 0.517
2025 316.8 0.517
2026 317.7 0.516
2027 318.6 0.516
2028 319.5 0.516
2029 320.5 0.515
2030 321.4 0.515


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


 
  


wds08213-0136b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 08213-0136 STF 1216 (HD 70340) : NOTES
 
 
discov_num notes refcode
STF1216 Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 8.24 +/- 5.59, 4.58, and 2.09 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok2014a orb j Tokovinin, A., Mason, B.D., & Hartkopf, W.I. 2014AJ....147..123T
Tok2014a +St AJ 147, 123, 2014 (some measures corrected in Tok2017b) 2017AJ....154..110T
 
 
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
08213-0136 STF1216 2004 192 299 0.5 6.85 7.88 A2Vpn: NOD 082120.28-013607.3
08213-0136 STF1216 2007 193 299 0.5 6.85 7.88 A2Vpn: NOD 082120.28-013607.3
08213-0136 STF1216 2010 194 303 0.5 6.85 7.88 A2Vpn: NOD 082120.28-013607.3
08213-0136 STF1216 2013 196 305 0.5 6.85 7.88 A2Vpn: NOD 082120.28-013607.3
08213-0136 STF1216 2014 184 306 0.5 6.85 7.88 A2Vpn: NO 082120.28-013607.3
08213-0136 STF1216 2017 185 307 0.5 6.85 7.88 A2Vpn: NO 082120.28-013607.3
08213-0136 STF1216 2020 188 311 0.5 6.85 7.88 A2Vpn: NO 082120.28-013607.3

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

 
 
WDS 08213-0136 STF 1216 (HD 70340) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 08213-0136 STF 1216 (HD 70340) : MEASURES
 
 
No records found.

 
 
WDS 08213-0136 (HD 70340) : VIRTUAL EYEPIECE
 
 

08213-0136 STF1216A mag 6.85 Sp A2Vpn: 08213-0136 STF1216B sep 0.5 P.A. 310.60 mag 7.88 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 08213-0136 (HD 70340) : ALADIN DSS IMAGE @ 08h 21m 20.28s -01° 36' 07.3"
 
 
 
 
WDS 08213-0136 STF 1216 (HD 70340) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

08213-0136 STF1216 distance=0' 08219-0139 WZ 12 distance=9' 08201-0150 J 3288 distance=24' 08198-0144 BAL 500 distance=25' 08201-0149 J 3287 distance=25' 08238-0133 BAL 502 distance=38' 08242-0150 GWP1014 distance=45' 08246-0109 B 2527AB distance=56' 08246-0109 ENG 35AC distance=56' 08246-0109 EGN 27AE distance=56' 08202-0232 LDS3786 distance=58' 08246-0109 BUP 117CD distance=58' 08255-0207 A 1336 distance=70' 08259-0216 BAL 504 distance=79' 08248-0236 BRT 419 distance=80' 08207-0001 SLW 241 distance=98' 08149-0120 J 2055 distance=99' 08275-0216 SLN 64 distance=101' 08143-0149 BAL 499 distance=108' 08140-0115 TDS5634 distance=113' 08197-0019 GAU 12 distance=118' 08170+0001 CHM 5AB distance=118' 08170+0001 LDS3782AC distance=118' 08136-0159 HJ 778 distance=119' 08135-0123 HJ 85 distance=119' 08285-0231 A 551AB distance=121' 08285-0231 STF1233AB,C distance=121' 08164-0314 HWE 21 distance=122' 08177-0015 BAL1136 distance=124' 08166+0005 RST5288 distance=124' 08166+0011 RST5289 distance=129' 08180-0022 GAU 11 distance=129' 08169-0016 BAL1135 distance=130' 08272+0003 GWP1019AB distance=133' 08272+0003 KPP4371AC distance=133' 08272+0003 KPP4371BC distance=133' 08221-0348 HJ 90AB distance=133' 08221-0348 HJ 90AC distance=133' 08221-0348 ABH 71AD distance=133' 08221-0348 ABH 71AE distance=133' 08221-0348 ABH 71AF distance=133' 08212+0037 TDS5752 distance=134' 08149-0001 J 72AB distance=137' 08149-0001 J 72AC distance=137' 08246-0345 CHR 172Aa,Ab distance=138' 08246-0345 TOK 20AB distance=138' 08246-0345 ALP 29AC distance=138' 08258-0025 SCJ 10A,BC distance=138' 08258-0025 RST5297BC distance=139' 08280-0312 GWP1022 distance=139' 08122-0150 J 421 distance=139' 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 08213-0136 STF1216 311 0.5
Show 08219-0139 WZ 12 155 8.0 9
Show 08201-0150 J 3288 353 2.5 24
Show 08198-0144 BAL 500 77 10.2 25
Show 08201-0149 J 3287 71 3.8 25
Show 08238-0133 BAL 502 213 17.8 38
Show 08242-0150 GWP1014 124 42.8 45
Show 08246-0109 B 2527 AB 179 0.2 56
Show 08246-0109 ENG 35 AC 38 162.8 56
Show 08246-0109 EGN 27 AE 21 0.8 56
Show 08202-0232 LDS3786 46 13.9 58
Show 08246-0109 BUP 117 CD 13 65.9 58
Show 08255-0207 A 1336 207 5.7 70
Show 08259-0216 BAL 504 66 13.2 79
Show 08248-0236 BRT 419 173 3.3 80
Show 08207-0001 SLW 241 90 55.6 98
Show 08149-0120 J 2055 86 1.9 99
Show 08275-0216 SLN 64 52 2.6 101
Show 08143-0149 BAL 499 126 16.1 108
Show 08140-0115 TDS5634 319 0.7 113
Show 08197-0019 GAU 12 64 3.1 118
Show 08170+0001 CHM 5 AB 318 64.6 118
Show 08170+0001 LDS3782 AC 329 107.5 118
Show 08136-0159 HJ 778 139 4.9 119
Show 08135-0123 HJ 85 85 16.7 119
Show 08285-0231 A 551 AB 63 0.4 121
Show 08285-0231 STF1233 AB,C 330 18.3 121
Show 08164-0314 HWE 21 228 1.4 122
Show 08177-0015 BAL1136 4 18.2 124
Show 08166+0005 RST5288 322 1.5 124
Show 08166+0011 RST5289 291 1.7 129
Show 08180-0022 GAU 11 140 5.4 129
Show 08169-0016 BAL1135 92 10.7 130
Show 08272+0003 GWP1019 AB 95 19.5 133
Show 08272+0003 KPP4371 AC 93 19.0 133
Show 08272+0003 KPP4371 BC 322 1.8 133
Show 08221-0348 HJ 90 AB 157 15.8 133
Show 08221-0348 HJ 90 AC 346 42.5 133
Show 08221-0348 ABH 71 AD 234 47.5 133
Show 08221-0348 ABH 71 AE 189 67.0 133
Show 08221-0348 ABH 71 AF 29 36.8 133
Show 08212+0037 TDS5752 138 1.2 134
Show 08149-0001 J 72 AB 116 3.2 137
Show 08149-0001 J 72 AC 121 28.8 137
Show 08246-0345 CHR 172 Aa,Ab 71 0.1 138
Show 08246-0345 TOK 20 AB 329 35.4 138
Show 08246-0345 ALP 29 AC 47 356.3 138
Show 08258-0025 SCJ 10 A,BC 77 36.5 138
Show 08258-0025 RST5297 BC 66 0.3 139
Show 08280-0312 GWP1022 272 25.9 139
Show 08122-0150 J 421 285 3.4 139

 
 
WDS 08213-0136 : COMPONENTS
 
 
  A
B pa=310.6°
sep=0.54"
 
 
08213-0136 A
 
 
Componente originario normalizzato AB Name HD 70340 Coord arcsec 2000 082120.28-013607.3 Mag 6.85
Spectral class A2Vpn: (white) PmRA -9.00 PmDE -28.0 SAO 135804
HIP 40941 Tycho2 4848-00292-1 HD 70340 HR 3278
GC 11387 ADS 6762 BD BD-01 2017
Tycho2
Tycho2 4848-00292-1 Pflag RAmdeg 125.33447072 DEmdeg -1.60201262
PmRA -8.7 PmDE -27.8 E RAmdeg 4 E DEmdeg 4
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.16 EpDEm 1990.85
Num 16 Q RAmdeg 1.2 Q DEmdeg 1.8 Q pmRA 1.3
Q pmDE 1.7 BTmag 6.582 E BTmag 0.015 VTmag 6.541
E VTmag 0.010 Prox 999 TYC T HIP 40941
CCDM AB RAdeg 125.33449111 DEdeg -1.60194472 EpRA 1990 1.58
EpDE 1990 1.24 E RAdeg 3.9 E DEdeg 4.3 Posflg P
Corr 0.4
SAO
SAO 135804 DelFlag RA1950 PmRA1950 -0.0014
DE1950 PmDE1950 -0.044 Vmag 6.4 SpType A0
Double code Source 70 CatNum 11387 DM BD-01 2017
DMcomp BDsup HD 70340 M HD 0
GC 11387 RA1950rad 2.17642355 DE1950rad -0.0251683 PmRA2000 -0.0012
PmDE2000 -0.041
Hipparcos
Catalog H HIP 40941 Proxy H RAhms 08 21 20.29
DEdms -01 36 07.1 Vmag 6.52 VarFlag R Vmag G
RAdeg 125.335 DEdeg -1.60196 AstroRef A Plx 6.77
CCDM 08213-0136 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 286 Rho 0.524 HD 70340 BD BD-01 2017
CD CP Dm number -01 2017 VIred 0.04
SpType A2pe... R SpType Coord arcsec 2000 082120.29-013607.1
Hipparcos 2
HIP 40941 Sn 15 So 3 Nc 2
RArad 2.1875004061 DErad -0.0279594914 Plx 6.39 PmRA -9.46
PmDE -31.16 E RArad 0.74 E DErad 0.58 E Plx 0.88
E pmRA 0.91 E pmDE 0.84 Hpmag 6.5225 E Hpmag 0.0006
SHp 0.005 VA 0 BV 0.023 E BV 0.002
VI 0.04
CCDM
Ccdm 08213-0136 RComp Comp A Note1
Note2 Discov num DRAs 2.25 DDEs -7.4
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.9 Sp A0 PmNote *
PmRA -22 PmDE -29 Dm number -01 2017 Cat1 BD
Name2 -01 1227 Cat2 AGK2/3 HD 70340 M HD
ADS BDS A 6762 M ADS BDS N IDS IDS 08163S0117A
HIC 40941
 
 
08213-0136 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 082120.25-013606.9 Mag 7.88 PmRA -9.00
PmDE -28.0 Calc delta mag 1.03 Calc coord yes
CCDM
Ccdm 08213-0136 RComp Comp B Note1 *
Note2 Discov num STF1216 DRAs DDEs
R dRAs Year 1831 Theta Rho
Obs 99 Vmag 7.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 6762 M ADS BDS N IDS IDS 08163S0117B
HIC 40941