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Doubles in session


Current system
20300-7739
HDS 2931
HD 193698


Nearby doubles
29' : 20319-7712
HJ 5186

32' : 20308-7811
UC 4203

32' : 20375-7800
TDT2432

40' : 20328-7701
JSP 814

50' : 20442-7759
HDS2951

50' : 20442-7800
UC 4275

53' : 20361-7651
KPP1878

54' : 20381-7654
HJ 5199

79' : 20264-7857
TDT2270

80' : 20172-7849
RST3249

83' : 20269-7901
UC 4187

86' : 20425-7856
UC 4264

90' : 20206-7904
UC 4152

96' : 20482-7857
UC 4294

99' : 20194-7608
RSS 546

106' : 20103-7907
HJ 5153

113' : 20352-7550
LDS 713

121' : 20373-7938
SPM 39

130' : 20365-7532
TDT2415

141' : 20179-7526
KPP 560

145' : 20417-7521
DUN 232

150' : 20205-8007
TDT2191

154' : 20280-7506
TDT2301

168' : 20475-8019
HDS2963

177' : 20169-7449
I 1045

198' : 20129-8052
KPP 463



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.

20300-7739 HDS 2931 (HD 193698)

 
 
20h 29m 58.35s -77° 39' 25.6" P.A. 97.00 sep 0.1 mag 9.57,10.33 Sp F3V dist. 208.77 pc (681.01 l.y.)
 
 
Coord 2000 20300-7739 Discov num HDS2931 Comp Coord arcsec 2000 20 29 58.35 -77 39 25.6
Date first 1991 Date last 2020 Obs 7
Pa first 236 Pa last 96.7 P.A. Now (θ) 96.7°
Sep first 0.2 Sep last 0.124 Sep. Now (ρ) 0.124"
Mag pri 9.57 Mag sec 10.33 delta mag (ΔM) 0.76 Spectral class F3V (yellow-white)
Pri motion ra -044 Sec motion ra
Pri motion dec +039 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 193698 Constellation Octans HIP 101129 Tycho2 9464-00882-1
Gaia DR2 6362408803897223296 HD 193698 CP CP-78 1311 Distance 208.77
Distance ly 681.01
 
 
ORBITAL ELEMENTS
 
 
Period (P)140y Periastron (T)2010.73y Semi-major axis (a)0.213a
Eccentricity (e)0.645 Inclination (i)38° Longitude of periastron (ω)309.3°
Node (Ω)54.7° Notes ReferenceTok2020g
Equinox2000 Last observation2019 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 257.1 0.137
2001 261.1 0.128
2002 265.8 0.118
2003 271.3 0.108
2004 278.0 0.098
2005 286.1 0.088
2006 296.3 0.079
2007 308.8 0.071
2008 324.0 0.066
2009 341.1 0.063
2010 358.7 0.064
2011 15.0 0.068
2012 29.2 0.073
2013 41.2 0.080
2014 51.5 0.086
2015 60.3 0.092
2016 68.1 0.098
2017 75.0 0.104
2018 81.2 0.109
2019 86.8 0.114
2020 92.0 0.119
2021 96.8 0.123
2022 101.3 0.128
2023 105.4 0.133
2024 109.2 0.137
2025 112.9 0.142
2026 116.2 0.146
2027 119.4 0.151
2028 122.4 0.155
2029 125.3 0.159
2030 128.0 0.164


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


 
  


wds20300-7739a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20300-7739 HDS 2931 (HD 193698) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2020g orb - Tokovinin, A. 2020IAUDS.201....1A
Tok2020g Inf. Circ. 201, 1, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 HDS Hipparcos Double Star (from additional DD list)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20300-7739 HDS2931 1991 1 236 0.2 9.57 10.33 F3V 202958.35-773925.6
20300-7739 HDS2931 2014 2 249 0.1 9.57 10.33 F3V 202958.35-773925.6
20300-7739 HDS2931 2015 3 67 0.1 9.57 10.33 F3V 202958.35-773925.6
20300-7739 HDS2931 2017 4 77 0.1 9.57 10.33 F3V 202958.35-773925.6
20300-7739 HDS2931 2018 5 84 0.1 9.57 10.33 F3V 202958.35-773925.6
20300-7739 HDS2931 2019 6 88 0.1 9.57 10.33 F3V 202958.35-773925.6
20300-7739 HDS2931 2020 7 97 0.1 9.57 10.33 F3V O 202958.35-773925.6

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

 
 
WDS 20300-7739 HDS 2931 (HD 193698) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20300-7739 HDS 2931 (HD 193698) : MEASURES
 
 
No records found.

 
 
WDS 20300-7739 (HD 193698) : VIRTUAL EYEPIECE
 
 

20300-7739 HDS2931A mag 9.57 Sp F3V 20300-7739 HDS2931B sep 0.0 P.A. 118.80 mag 10.33 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 20300-7739 (HD 193698) : ALADIN DSS IMAGE @ 20h 29m 58.35s -77° 39' 25.6"
 
 
 
 
WDS 20300-7739 HDS 2931 (HD 193698) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20300-7739 HDS2931 distance=0' 20319-7712 HJ 5186 distance=29' 20308-7811 UC 4203 distance=32' 20375-7800 TDT2432 distance=32' 20328-7701 JSP 814 distance=40' 20442-7759 HDS2951 distance=50' 20442-7800 UC 4275 distance=50' 20361-7651 KPP1878 distance=53' 20381-7654 HJ 5199 distance=54' 20264-7857 TDT2270 distance=79' 20172-7849 RST3249 distance=80' 20269-7901 UC 4187 distance=83' 20425-7856 UC 4264 distance=86' 20206-7904 UC 4152 distance=90' 20482-7857 UC 4294 distance=96' 20194-7608 RSS 546 distance=99' 20103-7907 HJ 5153 distance=106' 20352-7550 LDS 713 distance=113' 20373-7938 SPM 39 distance=121' 20365-7532 TDT2415 distance=130' 20179-7526 KPP 560 distance=141' 20417-7521 DUN 232 distance=145' 20205-8007 TDT2191 distance=150' 20311-7508 TDT2334Aa,Ab distance=152' 20280-7506 TDT2301 distance=154' 20475-8019 HDS2963 distance=168' 20169-7449 I 1045 distance=177' 20129-8052 KPP 463 distance=198' 20333-8058 HJ 5182 distance=199' 20437-8104 WIS 342 distance=209' 20214-8117 I 1044 distance=219' 20366-7354 TDT2418 distance=228' 20318-7343 TDT2340 distance=237' 20270-8143 LDS 706 distance=244' 20327-8155 HJ 5175AB distance=257' 20327-8155 HJ 5175AC distance=257' 20442-7301 HEI 280 distance=285' 20202-7257 TDT2184 distance=286' 20203-7255 B 1892 distance=287' 20390-7254 TDT2452 distance=288' 20198-7254 TDT2173 distance=288' 20245-8233 KPP4194 distance=295' 20133-7246 TDT2099 distance=300' 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 20300-7739 HDS2931 97 0.1
Show 20319-7712 HJ 5186 94 7.8 29
Show 20308-7811 UC 4203 307 21.5 32
Show 20375-7800 TDT2432 221 3.7 32
Show 20328-7701 JSP 814 299 3.3 40
Show 20442-7759 HDS2951 332 0.0 50
Show 20442-7800 UC 4275 95 7.5 50
Show 20361-7651 KPP1878 243 14.6 53
Show 20381-7654 HJ 5199 211 26.8 54
Show 20264-7857 TDT2270 281 0.8 79
Show 20172-7849 RST3249 311 0.4 80
Show 20269-7901 UC 4187 105 30.7 83
Show 20425-7856 UC 4264 73 42.0 86
Show 20206-7904 UC 4152 78 64.5 90
Show 20482-7857 UC 4294 309 25.4 96
Show 20194-7608 RSS 546 127 22.7 99
Show 20103-7907 HJ 5153 125 47.2 106
Show 20352-7550 LDS 713 230 80.3 113
Show 20373-7938 SPM 39 81 18.3 121
Show 20365-7532 TDT2415 343 0.7 130
Show 20179-7526 KPP 560 235 5.3 141
Show 20417-7521 DUN 232 19 16.6 145
Show 20205-8007 TDT2191 240 0.5 150
Show 20311-7508 TDT2334 Aa,Ab 180 0.4 152
Show 20280-7506 TDT2301 351 2.0 154
Show 20475-8019 HDS2963 15 0.3 168
Show 20169-7449 I 1045 289 1.1 177
Show 20129-8052 KPP 463 207 3.7 198
Show 20333-8058 HJ 5182 25.5 199
Show 20437-8104 WIS 342 61 714.6 209
Show 20214-8117 I 1044 21 0.7 219
Show 20366-7354 TDT2418 336 0.4 228
Show 20318-7343 TDT2340 340 0.5 237
Show 20270-8143 LDS 706 85 226.5 244
Show 20327-8155 HJ 5175 AB 301 10.0 257
Show 20327-8155 HJ 5175 AC 197 12.3 257
Show 20442-7301 HEI 280 104 0.8 285
Show 20202-7257 TDT2184 4 1.2 286
Show 20203-7255 B 1892 272 3.7 287
Show 20390-7254 TDT2452 215 0.7 288
Show 20198-7254 TDT2173 216 0.5 288
Show 20245-8233 KPP4194 131 2.9 295
Show 20133-7246 TDT2099 24 2.3 300

 
 
WDS 20300-7739 : COMPONENTS
 
 
  A
B pa=118.8°
sep=0.03"
 
 
20300-7739 A
 
 
Componente originario normalizzato AB Name HD 193698 Coord arcsec 2000 202958.35-773925.6 Mag 9.57
Spectral class F3V (yellow-white) PmRA -44.00 PmDE 39.0 HIP 101129
Tycho2 9464-00882-1 HD 193698 CP CP-78 1311
Tycho2
Tycho2 9464-00882-1 Pflag RAmdeg 307.49258040 DEmdeg -77.65701796
PmRA -46.1 PmDE 41.0 E RAmdeg 8 E DEmdeg 8
E pmRA 1.2 E pmDE 1.3 EpRAm 1990.57 EpDEm 1990.96
Num 10 Q RAmdeg 0.8 Q DEmdeg 1.2 Q pmRA 0.7
Q pmDE 1.3 BTmag 9.551 E BTmag 0.018 VTmag 9.071
E VTmag 0.015 Prox 999 TYC T HIP 101129
CCDM AB RAdeg 307.49308167 DEdeg -77.65711167 EpRA 1990 1.64
EpDE 1990 1.74 E RAdeg 8.3 E DEdeg 7.7 Posflg P
Corr 0.1
Hipparcos
Catalog H HIP 101129 Proxy H RAhms 20 29 58.35
DEdms -77 39 25.6 Vmag 9.04 VarFlag R Vmag G
RAdeg 307.493 DEdeg -77.6571 AstroRef * Plx 4.08
CCDM 20300-7739 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 236 Rho 0.206 HD 193698 BD
CD CP CP-78 1311 Dm number -78 1311 VIred 0.56
SpType F3V R SpType Coord arcsec 2000 202958.35-773925.6
Hipparcos 2
HIP 101129 Sn 55 So 3 Nc 2
RArad 5.3667674097 DErad -1.3553723401 Plx 4.79 PmRA -45.35
PmDE 38.24 E RArad 0.83 E DErad 0.76 E Plx 1.09
E pmRA 0.97 E pmDE 0.9 Hpmag 9.1329 E Hpmag 0.002
SHp 0.021 VA 0 BV 0.485 E BV 0.015
VI 0.56
CCDM
Ccdm 20300-7739 RComp Comp A Note1
Note2 Discov num DRAs -1.76 DDEs -25.2
R dRAs 82 Year Theta Rho
Obs 2 Vmag 9.6 Sp F3 PmNote *
PmRA -44 PmDE 39 Dm number -78 1311 Cat1 CPD
Name2 Cat2 HD 193698 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 101129
 
 
20300-7739 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 202958.36-773925.6 Mag 10.33 Calc delta mag 0.76
Calc coord yes
CCDM
Ccdm 20300-7739 RComp Comp B Note1
Note2 Discov num HDS DRAs -1.80 DDEs -25.3
R dRAs 82 Year 1991 Theta 236 Rho 0.2
Obs 1 Vmag 10.3 Sp PmNote *
PmRA -44 PmDE 39 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 101129