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Doubles in session


Current system
16450+2928
COU 490
HD 151236


Nearby doubles
35' : 16457+3000
STF2098AB

41' : 16456+3008
UC 3226

45' : 16427+2854
TDS 830

46' : 16479+2951
UC 3234

56' : 16446+3023
CVR 839

62' : 16413+3006
A 349

67' : 16451+2821
STF2095

68' : 16414+3016
HDS2368

70' : 16401+2901
BU 42

76' : 16404+2842
KPP4010AB

78' : 16391+2919
TDT 19

93' : 16385+3006
TDT 16AB

96' : 16401+3038
LAU 3

96' : 16416+3053
LSC 66

98' : 16438+2751
TDT 54

99' : 16496+3044
GRV 939

101' : 16521+3006
ROE 3

102' : 16518+2840
STF2107AB

108' : 16370+2904
COU 622

109' : 16514+2819
SLW1197

110' : 16426+3113
SEI 540

111' : 16534+2925
HEI 13

115' : 16534+2859
GRV 941

119' : 16359+2933
COU 621AB

120' : 16540+2906
A 350

127' : 16476+3129
TDS 836



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.

16450+2928 COU 490 (HD 151236)

 
 
16h 44m 58.51s +29° 27' 37.9" P.A. 294.00 sep 0.1 mag 8.80,8.80 Sp F5
 
 
Coord 2000 16450+2928 Discov num COU 490 Comp Coord arcsec 2000 16 44 58.51 +29 27 37.9
Date first 1970 Date last 2008 Obs 32
Pa first 73 Pa last 293.9 P.A. Now (θ) 293.9°
Sep first 0.2 Sep last 0.121 Sep. Now (ρ) 0.121"
Mag pri 8.80 Mag sec 8.80 delta mag (ΔM) 0 Spectral class F5 (yellow-white)
Pri motion ra +000 Sec motion ra
Pri motion dec -015 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 151236 Constellation Hercules SAO 84575 Tycho2 2070-00213-1
Gaia DR2 1311212734756224640 HD 151236
 
 
ORBITAL ELEMENTS
 
 
Period (P)100.1y± 5 Periastron (T)2007.34y± 3.5 Semi-major axis (a)0.218a± 0.008
Eccentricity (e)0.151± 0.006 Inclination (i)130.1°± 1.5 Longitude of periastron (ω)68.8°± 11.2
Node (Ω)1.7°± 2 Notesn ReferenceDoc2008a
Equinox2000 Last observation2005 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 338.8 0.172
2001 335.1 0.166
2002 331.0 0.160
2003 326.6 0.154
2004 321.8 0.148
2005 316.6 0.142
2006 311.0 0.136
2007 304.9 0.131
2008 298.4 0.127
2009 291.4 0.124
2010 284.2 0.121
2011 276.7 0.120
2012 269.2 0.121
2013 261.8 0.122
2014 254.6 0.125
2015 247.8 0.129
2016 241.5 0.134
2017 235.7 0.139
2018 230.3 0.145
2019 225.3 0.152
2020 220.8 0.158
2021 216.6 0.165
2022 212.8 0.172
2023 209.3 0.178
2024 206.0 0.185
2025 202.9 0.191
2026 200.0 0.197
2027 197.2 0.202
2028 194.6 0.207
2029 192.1 0.211
2030 189.7 0.215


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


 
  


wds16450%2B2928b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 16450+2928 COU 490 (HD 151236) : NOTES
 
 
discov_num notes refcode
COU 490 1983.3125: Very poor atmospheric conditions. Bag1984a
Systemic mass is estimated at 3.1 +/- 0.5 Msun, assuming a dynamical
parallax of 6.94 +/- 0.10 mas. Couteau (1999) gives a spectral type of Cou1999b
F5 for both components. However, 2MASS IR colors suggest a somewhat
earlier spectral type F0-F2V. Adopting an F2V spectral type yields a
rough spectroscopic parallax of 6.92 mas, in good agreement with the
derived dynamical value. Doc2008a
 
 
REFERENCES
 
 
refcode metd author reference
Bag1984a S j Balega, Y.Y. & Ryadchenko, V.P. 1984SvAL...10...95B
Bag1984a SvAL 10, 95, 1984
Cou1999b orb - Couteau, P. .
Cou1999b Cat. de 2700 Etoiles Doubles "COU", 1999 Obs. de la Cote d'Azur, 3rd ed.
Doc2008a S j Docobo, J.A., Tamazian, V.S., Andrade, M., Ling, J.F., Balega, Y.Y., 2008AJ....135.1803D
Doc2008a +orb Lahulla, J.F., & Maximov, A.
Doc2008a AJ 135, 1803, 2008
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16450+2928 COU 490 2005 29 314 0.1 8.80 8.80 F5 NOD 164458.51+292737.9
16450+2928 COU 490 2006 30 305 0.1 8.80 8.80 F5 NOD 164458.51+292737.9
16450+2928 COU 490 2008 31 294 0.1 8.80 8.80 F5 NOD 164458.51+292737.9

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

 
 
WDS 16450+2928 COU 490 (HD 151236) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 16450+2928 COU 490 (HD 151236) : MEASURES
 
 
No records found.

 
 
WDS 16450+2928 (HD 151236) : VIRTUAL EYEPIECE
 
 

16450+2928 COU 490A mag 8.8 Sp F5 16450+2928 COU 490B sep 0.1 P.A. 297.00 mag 8.8 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 16450+2928 (HD 151236) : ALADIN DSS IMAGE @ 16h 44m 58.51s +29° 27' 37.9"
 
 
 
 
WDS 16450+2928 COU 490 (HD 151236) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

16450+2928 COU 490 distance=0' 16457+3000 STF2098BC distance=34' 16457+3000 STF2098AB distance=35' 16457+3000 STF2098AD distance=35' 16457+3000 STF2098AC distance=35' 16457+3000 STF2098DE distance=36' 16456+3008 UC 3226 distance=41' 16427+2854 TDS 830 distance=45' 16479+2951 UC 3234 distance=46' 16446+3023 CVR 839 distance=56' 16413+3006 A 349 distance=62' 16451+2821 STF2095 distance=67' 16414+3016 HDS2368 distance=68' 16401+2901 BU 42 distance=70' 16404+2842 KPP4010AB distance=76' 16391+2919 TDT 19 distance=78' 16385+3006 TDT 16AB distance=93' 16385+3006 TDT 16AC distance=93' 16401+3038 LAU 3 distance=96' 16416+3053 LSC 66 distance=96' 16438+2751 TDT 54 distance=98' 16496+3044 GRV 939 distance=99' 16521+3006 ROE 3 distance=101' 16518+2840 STF2107AB distance=102' 16518+2840 STF2107AC distance=102' 16370+2904 COU 622 distance=108' 16514+2819 SLW1197 distance=109' 16426+3113 SEI 540 distance=110' 16534+2925 HEI 13 distance=111' 16534+2859 GRV 941 distance=115' 16359+2933 COU 621AB distance=119' 16359+2933 LDS6314AC distance=119' 16540+2906 A 350 distance=120' 16476+3129 TDS 836 distance=127' 16510+2747 NSN 59 distance=128' 16451+2713 TDT 67 distance=135' 16360+3038 BRT 256 distance=136' 16413+3136 STF2084 distance=138' 16447+3148 COU 804 distance=140' 16546+3036 LDS4701 distance=141' 16364+3057 PRB 5 distance=142' 16559+2939 TDT 150 distance=143' 16468+2705 TDT 82 distance=145' 16356+3048 TDS9990 distance=146' 16386+3129 KPP1528 distance=147' 16469+2701 A 227 distance=149' 16356+3055 TDS9989 distance=150' 16371+3119 OSO 73 distance=152' 16345+3034 UC 220 distance=152' 16495+3149 GRV 938 distance=154' 16486+2700 TDT 99 distance=156' 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 16450+2928 COU 490 294 0.1
Show 16457+3000 STF2098 BC 124 52.4 34
Show 16457+3000 STF2098 AB 145 14.2 35
Show 16457+3000 STF2098 AD 18 67.6 35
Show 16457+3000 STF2098 AC 128 65.6 35
Show 16457+3000 STF2098 DE 268 5.8 36
Show 16456+3008 UC 3226 268 33.0 41
Show 16427+2854 TDS 830 190 1.0 45
Show 16479+2951 UC 3234 63 7.3 46
Show 16446+3023 CVR 839 254 17.4 56
Show 16413+3006 A 349 127 0.7 62
Show 16451+2821 STF2095 160 5.4 67
Show 16414+3016 HDS2368 157 0.8 68
Show 16401+2901 BU 42 40 7.7 70
Show 16404+2842 KPP4010 AB 317 7.8 76
Show 16391+2919 TDT 19 177 0.5 78
Show 16385+3006 TDT 16 AB 193 0.2 93
Show 16385+3006 TDT 16 AC 72 1.0 93
Show 16401+3038 LAU 3 263 80.2 96
Show 16416+3053 LSC 66 98 0.0 96
Show 16438+2751 TDT 54 201 1.0 98
Show 16496+3044 GRV 939 207 8.0 99
Show 16521+3006 ROE 3 21 6.1 101
Show 16518+2840 STF2107 AB 112 1.4 102
Show 16518+2840 STF2107 AC 309 82.1 102
Show 16370+2904 COU 622 303 1.7 108
Show 16514+2819 SLW1197 293 170.1 109
Show 16426+3113 SEI 540 227 11.5 110
Show 16534+2925 HEI 13 122 7.8 111
Show 16534+2859 GRV 941 7 48.6 115
Show 16359+2933 COU 621 AB 248 0.7 119
Show 16359+2933 LDS6314 AC 194 26.0 119
Show 16540+2906 A 350 144 0.6 120
Show 16476+3129 TDS 836 217 2.6 127
Show 16510+2747 NSN 59 44 21.0 128
Show 16451+2713 TDT 67 185 0.5 135
Show 16360+3038 BRT 256 180 3.4 136
Show 16413+3136 STF2084 110 1.6 138
Show 16447+3148 COU 804 15 0.2 140
Show 16546+3036 LDS4701 251 273.0 141
Show 16364+3057 PRB 5 15 999.9 142
Show 16559+2939 TDT 150 98 2.1 143
Show 16468+2705 TDT 82 356 0.6 145
Show 16356+3048 TDS9990 178 0.6 146
Show 16386+3129 KPP1528 141 11.5 147
Show 16469+2701 A 227 236 2.1 149
Show 16356+3055 TDS9989 190 0.6 150
Show 16371+3119 OSO 73 114 25.1 152
Show 16345+3034 UC 220 51 31.3 152
Show 16495+3149 GRV 938 239 29.9 154
Show 16486+2700 TDT 99 38 0.5 156

 
 
WDS 16450+2928 : COMPONENTS
 
 
  A
B pa=297.0°
sep=0.11"
 
 
16450+2928 A
 
 
Componente originario normalizzato AB Name HD 151236 Coord arcsec 2000 164458.51+292737.9 Mag 8.8
Spectral class F5 (yellow-white) PmRA 0.00 PmDE -15.0 SAO 84575
Tycho2 2070-00213-1 HD 151236 DM BD+29 2876
Tycho2
Tycho2 2070-00213-1 Pflag RAmdeg 251.24380709 DEmdeg 29.46053717
PmRA -8.1 PmDE -15.8 E RAmdeg 7 E DEmdeg 6
E pmRA 1.4 E pmDE 1.2 EpRAm 1991.13 EpDEm 1991.24
Num 9 Q RAmdeg 0.6 Q DEmdeg 1.0 Q pmRA 0.6
Q pmDE 1.1 BTmag 9.135 E BTmag 0.017 VTmag 8.723
E VTmag 0.013 Prox 999 TYC T HIP
CCDM RAdeg 251.24382861 DEdeg 29.46057333 EpRA 1990 1.62
EpDE 1990 1.72 E RAdeg 6.9 E DEdeg 6.4 Posflg
Corr 0.0
SAO
SAO 84575 DelFlag RA1950 PmRA1950 0.0003
DE1950 PmDE1950 -0.022 Vmag 8.5 SpType F5
Double code Source 34 CatNum 7796 DM BD+29 2876
DMcomp BDsup HD 151236 M HD 0
GC RA1950rad 4.37645206 DE1950rad 0.51576859 PmRA2000 0.0005
PmDE2000 -0.02
CCDM
Ccdm 16450+2928 RComp Comp A Note1
Note2 Discov num DRAs -1.49 DDEs -22.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.8 Sp F5 PmNote *
PmRA 2 PmDE -14 Dm number +29 2876 Cat1 BD
Name2 +29 1617 Cat2 AGK2/3 HD 151236 M HD
ADS BDS M ADS BDS N IDS IDS 16410N2939A
HIC
 
 
16450+2928 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 164458.50+292737.9 Mag 8.8 Calc coord yes
CCDM
Ccdm 16450+2928 RComp Comp B Note1
Note2 Discov num COU 490 DRAs DDEs
R dRAs Year 1970 Theta 73 Rho 0.1
Obs 1 Vmag 8.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 16410N2939B
HIC