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Current system
17313+1901
COU 499
HD 158956


Nearby doubles
18' : 17304+1913
RAO 373

22' : 17298+1902
NSN 691

28' : 17332+1900
GRV 960

50' : 17296+1945
HO 632

51' : 17297+1815
BRT2433

58' : 17353+1853
KPP3319

64' : 17267+1904
GRV 954

68' : 17274+1941
GRV 955

69' : 17336+1801
BPM 688

71' : 17348+1812
TDT 422

77' : 17285+1755
TDT 370

81' : 17338+2013
UC 3368

84' : 17339+1747
COU 627

92' : 17261+1957
GRV 953

94' : 17248+1843
UC 3337

99' : 17291+1727
DAL 14AB

99' : 17372+1809
TDT 436

106' : 17249+1806
BPMA 50

107' : 17387+1840
SLO 1AB

109' : 17387+1834
BUP 177AB

110' : 17290+2046
TDT 376

117' : 17376+1747
BPM 690

126' : 17309+2106
TDT 392

128' : 17316+1654
BPM 684

129' : 17375+2036
GAU 21AB

132' : 17339+1655
LDT 22



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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

17313+1901 COU 499 (HD 158956)

 
 
17h 31m 17.44s +19° 01' 02.8" P.A. 304.00 sep 0.1 mag 8.70,8.70 Sp A5 dist. 446.43 pc (1456.25 l.y.)
 
 
Coord 2000 17313+1901 Discov num COU 499 Comp Coord arcsec 2000 17 31 17.44 +19 01 02.8
Date first 1970 Date last 2021 Obs 26
Pa first 90 Pa last 304.2 P.A. Now (θ) 304.2°
Sep first 0.2 Sep last 0.097 Sep. Now (ρ) 0.097"
Mag pri 8.70 Mag sec 8.70 delta mag (ΔM) 0 Spectral class A5 (white)
Pri motion ra -012 Sec motion ra
Pri motion dec -028 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 158956 Constellation Hercules SAO 102882 HIP 85740
Tycho2 1546-01390-1 Gaia DR2 4553813709233975808 HD 158956 BD BD+19 3336
Distance 446.43 Distance ly 1456.25
 
 
ORBITAL ELEMENTS
 
 
Period (P)316.83y Periastron (T)2003.65y Semi-major axis (a)0.284a
Eccentricity (e)0.5 Inclination (i)124.6° Longitude of periastron (ω)216.5°
Node (Ω)225.1° Notes ReferenceTok2017c
Equinox2000 Last observation2017 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 32.0 0.136
2001 29.5 0.133
2002 26.9 0.130
2003 24.2 0.126
2004 21.3 0.123
2005 18.2 0.119
2006 14.9 0.115
2007 11.4 0.112
2008 7.6 0.108
2009 3.7 0.105
2010 359.4 0.102
2011 354.9 0.099
2012 350.2 0.096
2013 345.2 0.094
2014 340.1 0.093
2015 334.8 0.092
2016 329.4 0.091
2017 324.0 0.092
2018 318.7 0.092
2019 313.5 0.094
2020 308.4 0.096
2021 303.6 0.098
2022 299.1 0.101
2023 294.8 0.104
2024 290.8 0.108
2025 287.1 0.112
2026 283.6 0.117
2027 280.5 0.121
2028 277.5 0.126
2029 274.8 0.131
2030 272.2 0.136


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


 
  


wds17313%2B1901e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 17313+1901 COU 499 (HD 158956) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2017c orb - Tokovinin, A. 2017IAUDS.193....1T
Tok2017c Inf. Circ. 193, 1, 2017
 
 
DISCOVERER
 
 
idgroup discov author
1 COU Couteau, P.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17313+1901 COU 499 1996 18 43 0.2 8.70 8.70 A5 O 173117.44+190102.8
17313+1901 COU 499 2007 19 5 0.1 8.70 8.70 A5 O 173117.44+190102.8
17313+1901 COU 499 2015 20 333 0.1 8.70 8.70 A5 O 173117.44+190102.8
17313+1901 COU 499 2017 21 321 0.1 8.70 8.70 A5 O 173117.44+190102.8
17313+1901 COU 499 2018 22 315 0.1 8.70 8.70 A5 O 173117.44+190102.8
17313+1901 COU 499 2021 25 304 0.1 8.70 8.70 A5 O 173117.44+190102.8

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

 
 
WDS 17313+1901 COU 499 (HD 158956) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17313+1901 COU 499 (HD 158956) : MEASURES
 
 
No records found.

 
 
WDS 17313+1901 (HD 158956) : VIRTUAL EYEPIECE
 
 

17313+1901 COU 499A mag 8.7 Sp A5 17313+1901 COU 499B sep 0.1 P.A. 305.70 mag 8.7 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 17313+1901 (HD 158956) : ALADIN DSS IMAGE @ 17h 31m 17.44s +19° 01' 02.8"
 
 
 
 
WDS 17313+1901 COU 499 (HD 158956) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17313+1901 COU 499 distance=1' 17304+1913 RAO 373 distance=18' 17298+1902 NSN 691 distance=22' 17332+1900 GRV 960 distance=28' 17296+1945 HO 632 distance=50' 17297+1815 BRT2433 distance=51' 17353+1853 KPP3319 distance=58' 17267+1904 GRV 954 distance=64' 17274+1941 GRV 955 distance=68' 17336+1801 BPM 688 distance=69' 17348+1812 TDT 422 distance=71' 17285+1755 TDT 370 distance=77' 17338+2013 UC 3368 distance=81' 17339+1747 COU 627 distance=84' 17261+1957 GRV 953 distance=92' 17248+1843 UC 3337 distance=94' 17291+1727 DAL 14AB distance=99' 17291+1727 DAL 14AC distance=99' 17372+1809 TDT 436 distance=99' 17387+1834 OSO 82CD distance=103' 17387+1834 BUP 177BC distance=105' 17249+1806 BPMA 50 distance=106' 17387+1840 SLO 1AB distance=107' 17387+1840 SLO 1AC distance=107' 17387+1834 BUP 177AB distance=109' 17387+1834 BUP 177AC distance=109' 17290+2046 TDT 376 distance=110' 17376+1747 BPM 690 distance=117' 17309+2106 TDT 392 distance=126' 17316+1654 BPM 684 distance=128' 17375+2036 GAU 21AB distance=129' 17339+1655 LDT 22 distance=132' 17319+1649 TOK 314 distance=132' 17360+2100 STF2190AB distance=136' 17360+2100 WAL 83AC distance=136' 17267+2101 BRT2432 distance=137' 17259+1655 KUI 81AB distance=148' 17259+1655 KUI 81AC distance=148' 17306+2129 LDS4748 distance=149' 17406+2017 AG 211 distance=152' 17297+1629 BPM 683 distance=154' 17250+2109 JNN 113 distance=156' 17275+1627 A 2184AB distance=163' 17275+1627 LBU 5AC distance=163' 17387+2106 KPP3320 distance=164' 17336+1618 LDS4752 distance=167' 17299+2147 TDT 382 distance=168' 17319+1613 LDS 996 distance=169' 17235+1654 A 2183AB distance=169' 17224+2056 COU 201AB distance=170' 17224+2056 COU 201AC distance=170' 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 17313+1901 COU 499 304 0.1 1
Show 17304+1913 RAO 373 225 2.5 18
Show 17298+1902 NSN 691 181 37.8 22
Show 17332+1900 GRV 960 61 29.4 28
Show 17296+1945 HO 632 197 6.7 50
Show 17297+1815 BRT2433 308 4.5 51
Show 17353+1853 KPP3319 343 3.2 58
Show 17267+1904 GRV 954 261 58.1 64
Show 17274+1941 GRV 955 274 15.3 68
Show 17336+1801 BPM 688 169 99.6 69
Show 17348+1812 TDT 422 139 0.5 71
Show 17285+1755 TDT 370 119 0.5 77
Show 17338+2013 UC 3368 156 81.6 81
Show 17339+1747 COU 627 145 2.2 84
Show 17261+1957 GRV 953 153 6.8 92
Show 17248+1843 UC 3337 192 31.7 94
Show 17291+1727 DAL 14 AB 88 2.4 99
Show 17291+1727 DAL 14 AC 184 18.2 99
Show 17372+1809 TDT 436 184 0.1 99
Show 17387+1834 OSO 82 CD 202 9.9 103
Show 17387+1834 BUP 177 BC 270 104.9 105
Show 17249+1806 BPMA 50 145 151.2 106
Show 17387+1840 SLO 1 AB 219 1.7 107
Show 17387+1840 SLO 1 AC 149 146.3 107
Show 17387+1834 BUP 177 AB 266 272.2 109
Show 17387+1834 BUP 177 AC 269 374.3 109
Show 17290+2046 TDT 376 305 0.7 110
Show 17376+1747 BPM 690 210 65.8 117
Show 17309+2106 TDT 392 136 1.8 126
Show 17316+1654 BPM 684 242 90.7 128
Show 17375+2036 GAU 21 AB 4 16.0 129
Show 17339+1655 LDT 22 63 0.4 132
Show 17319+1649 TOK 314 323 174.7 132
Show 17360+2100 STF2190 AB 22 10.4 136
Show 17360+2100 WAL 83 AC 37 76.8 136
Show 17267+2101 BRT2432 351 2.7 137
Show 17259+1655 KUI 81 AB 216 8.5 148
Show 17259+1655 KUI 81 AC 220 26.8 148
Show 17306+2129 LDS4748 283 15.2 149
Show 17406+2017 AG 211 130 2.7 152
Show 17297+1629 BPM 683 323 101.8 154
Show 17250+2109 JNN 113 24 3.5 156
Show 17275+1627 A 2184 AB 41 1.6 163
Show 17275+1627 LBU 5 AC 259 49.3 163
Show 17387+2106 KPP3320 250 1.7 164
Show 17336+1618 LDS4752 145 3.0 167
Show 17299+2147 TDT 382 288 0.3 168
Show 17319+1613 LDS 996 283 178.8 169
Show 17235+1654 A 2183 AB 137 1.2 169
Show 17224+2056 COU 201 AB 258 0.5 170
Show 17224+2056 COU 201 AC 301 10.3 170

 
 
WDS 17313+1901 : COMPONENTS
 
 
  A
B pa=305.7°
sep=0.09"
 
 
17313+1901 A
 
 
Componente originario normalizzato AB Name HD 158956 Coord arcsec 2000 173117.44+190102.8 Mag 8.7
Spectral class A5 (white) PmRA -12.00 PmDE -28.0 SAO 102882
HIP 85740 Tycho2 1546-01390-1 HD 158956 BD BD+19 3336
Tycho2
Tycho2 1546-01390-1 Pflag RAmdeg 262.82264579 DEmdeg 19.01738344
PmRA -5.2 PmDE -27.9 E RAmdeg 8 E DEmdeg 8
E pmRA 1.1 E pmDE 1.1 EpRAm 1990.78 EpDEm 1990.77
Num 10 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 1.0 BTmag 9.385 E BTmag 0.019 VTmag 9.002
E VTmag 0.015 Prox 999 TYC T HIP 85740
CCDM RAdeg 262.82265917 DEdeg 19.01744833 EpRA 1990 1.64
EpDE 1990 1.67 E RAdeg 8.3 E DEdeg 8.3 Posflg
Corr -0.1
SAO
SAO 102882 DelFlag RA1950 PmRA1950 0.0003
DE1950 PmDE1950 -0.047 Vmag 8.7 SpType A5
Double code Source 28 CatNum 6308 DM BD+19 3336
DMcomp BDsup HD 158956 M HD 0
GC RA1950rad 4.57760319 DE1950rad 0.33254926 PmRA2000 0.0004
PmDE2000 -0.045
Hipparcos
Catalog H HIP 85740 Proxy RAhms 17 31 17.44
DEdms +19 01 02.8 Vmag 8.98 VarFlag R Vmag G
RAdeg 262.823 DEdeg 19.0175 AstroRef Plx 4.25
CCDM 17313+1901 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 158956 BD BD+19 3336
CD CP Dm number +19 3336 VIred 1.53
SpType A5 R SpType Coord arcsec 2000 173117.44+190102.8
Hipparcos 2
HIP 85740 Sn 5 So 0 Nc 1
RArad 4.5871206092 DErad 0.3319171274 Plx 2.24 PmRA -1.71
PmDE -27.35 E RArad 0.93 E DErad 0.99 E Plx 1.32
E pmRA 1.31 E pmDE 1.15 Hpmag 9.0329 E Hpmag 0.0049
SHp 0.042 VA 0 BV 0.361 E BV 0.013
VI 0.42
CCDM
Ccdm 17313+1901 RComp Comp A Note1
Note2 Discov num DRAs -0.55 DDEs 2.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.7 Sp A5 PmNote *
PmRA -1 PmDE -29 Dm number +19 3336 Cat1 BD
Name2 +19 1620 Cat2 AGK2/3 HD 158956 M HD
ADS BDS M ADS BDS N IDS IDS 17269N1905A
HIC 85740
 
 
17313+1901 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 173117.43+190102.9 Mag 8.7 Calc coord yes
CCDM
Ccdm 17313+1901 RComp Comp B Note1
Note2 Discov num COU 499 DRAs DDEs
R dRAs Year 1970 Theta 88 Rho 0.2
Obs 1 Vmag 8.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17269N1905B
HIC 85740