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Doubles in session


Current system
15416+1940
HU 580 AB


Nearby doubles
28' : 15433+1954
HJ 2790

40' : 15388+1934
CVR 798

45' : 15428+1859
GWP2547

50' : 15450+1933
CBL 495

51' : 15424+1852
GWP2546

54' : 15378+1939
GWP2538

59' : 15432+1846
LDS4587

62' : 15405+1840
A 2076

71' : 15456+1859
SLW1135

73' : 15465+1957
COU 66

73' : 15419+1828
DRS 17AB

82' : 15384+2048
SLW1121

83' : 15468+1905
A 2077

86' : 15410+2105
GRV 910

96' : 15482+1925
COU 193

97' : 15440+1810
SHN 33

97' : 15474+1851
COU 192AB

100' : 15398+2117
AG 197

103' : 15382+2111
KPP3962

104' : 15485+2015
DBR 320

104' : 15404+2123
HU 579

105' : 15368+1820
LDS4571

106' : 15376+2110
HU 578

108' : 15350+2035
CBL 491

113' : 15445+1756
NSN 670

124' : 15328+1945
HU 577



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.

15416+1940 HU 580 AB

 
 
15h 41m 33.09s +19° 40' 13.8" P.A. 249.00 sep 0.2 mag 5.35,5.22 Sp B9V+A1V dist. 58.28 pc (190.11 l.y.)
 
 
Coord 2000 15416+1940 Discov num HU  580 Comp AB Coord arcsec 2000 15 41 33.09 +19 40 13.8
Date first 1902 Date last 2012 Obs 245
Pa first 72 Pa last 249.4 P.A. Now (θ) 65.9°
Sep first 0.2 Sep last 0.218 Sep. Now (ρ) 0.186"
Mag pri 5.35 Mag sec 5.22 delta mag (ΔM) 0.13 Spectral class B9V+A1V (blue-white/white)
Pri motion ra -056 Sec motion ra
Pri motion dec -044 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
15416+1940 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 101682 15 41 33 +19 40 14 HU 580 AB 2012 245 249 0.2 5.35 5.22 0.13 Y <===
Show Iot Ser 101682 15 41 33 +19 40 14 BU 1451 AB,C 2014 5 353 144.9 4.51 13.40 8.89
Show 101682 15 41 33 +19 40 14 BU 1451 AB,D 2020 7 109 152.8 4.51 12.60 8.09
Quadruple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Serpens SAO 101682 HIP 76852 Tycho2 1498-01787-1
Gaia DR2 1210043543151367680 HD 140159 HR 5842 GC 21102
ADS 9744 BD BD+20 3138 Bayer Iota Serpentis Bayer name Iot Ser
Flamsteed 21 Serpentis Flamsteed name 21 Ser Distance 58.28 Distance ly 190.11
Bayer greek ι Ser
 
 
ORBITAL ELEMENTS
 
 
Period (P)8015d (21.94y)± 6.3 Periastron (T)54180m (2007.217y)± 33 Semi-major axis (a)0.21033a± 0.00047
Eccentricity (e)0.0941± 0.0028 Inclination (i)83.608°± 0.043 Longitude of periastron (ω)80.5°± 1.8
Node (Ω)69.684°± 0.033 Notesn ReferenceMut2010b
Equinox2000 Last observation2008 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 62.9 0.152
2001 65.7 0.184
2002 67.9 0.203
2003 69.8 0.205
2004 71.8 0.189
2005 74.5 0.156
2006 79.2 0.108
2007 94.0 0.050
2008 203.3 0.029
2009 236.6 0.086
2010 243.2 0.139
2011 246.4 0.180
2012 248.5 0.205
2013 250.3 0.213
2014 252.2 0.204
2015 254.3 0.181
2016 257.3 0.146
2017 262.7 0.102
2018 277.2 0.054
2019 353.6 0.026
2020 47.6 0.065
2021 58.5 0.113
2022 63.1 0.154
2023 65.9 0.186
2024 68.0 0.203
2025 69.9 0.205
2026 71.9 0.188
2027 74.7 0.154
2028 79.6 0.105
2029 96.0 0.047
2030 208.1 0.032


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


 
  


wds15416%2B1940d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 15416+1940 HU 580 AB : NOTES
 
 
discov_num notes refcode
HU 580 iot Ser = 21 Ser.
The centers of the broad, blended spectral lines of the visual pair
show a fast variation (range about 65 km/s), and a weak redshifted
component has been seen occasionally. The system is thus triple.
1973.22, 1973.45: These measurements agree with the published B__1967b
orbit of van den Bos (1967) Lab1974
1986.388: Separation for this partially resolved pair was calculated
under the assumption of zero or otherwise known magnitude difference.
It is now possible to make the final choice between two orbits of van
den Bos (1964) in favor of the circular orbit and to perform small but B__1964b
necessary corrections to the orbit. Tok1985
AB: Martin et al. (1998) derive component masses 1.999 +/- 0.346 and
1.984 +/- 0.344 Msun. Mig1998
Calculated mass sum is 3.73 +/- 0.53 Msun, a bit low for a pair of
early A stars. Mut2010b
 
 
REFERENCES
 
 
refcode metd author reference
B__1964b orb - van den Bos, W.H. 1964JO.....47...34V
B__1964b J. Obs. 47, 34, 1964
B__1967b orb - van den Bos, W.H. 1967JO.....13..119V
B__1967b J. Obs. 13, 119, 1967
Lab1974 S j Labeyrie, A., Bonneau, D., Stachnik, R.V., & Gezari, D.Y. 1974ApJ...194L.147L
Lab1974 +orb ApJ 194, L147, 1974
Lab1974 (data from Hale 5m, KPNO 3.8m, 2.1m. Aperture listed as mean value of 3.6m unless
Lab1974 specifically given in paper)
Mig1998 orb - Martin, Ch., Mignard, F., Hartkopf, W.I., & McAlister, H.A. 1998A&AS..133..149M
Mig1998 A&AS 133, 149, 1998
Mut2010b Kp - Muterspaugh, M.W., Hartkopf, W.I., Lane. B.F., O'Connell, J., Williamson, M., 2010AJ....140.1623M
Mut2010b Kulkarni, S.R., Konacki, M., Burke, B.F., Colavita, M.M., Shao, M., &
Mut2010b Wiktorowicz, S.J.
Mut2010b AJ 140, 1623, 2010
Tok1985 Ig u Tokovinin, A.A. 1985A&AS...61..483T
Tok1985 A&AS 61, 483, 1985
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 HU Hussey, W.F.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15416+1940 HU 580 AB 2006 220 262 0.1 5.35 5.22 B9V+A1V NOD 154133.09+194013.8
15416+1940 HU 580 AB 2008 236 229 0.1 5.35 5.22 B9V+A1V NOD 154133.09+194013.8
15416+1940 HU 580 AB 2011 244 247 0.2 5.35 5.22 B9V A1V NOD 154133.09+194013.8
15416+1940 HU 580 AB 2012 245 249 0.2 5.35 5.22 B9V A1V NOD 154133.09+194013.8

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

 
 
WDS 15416+1940 HU 580 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 15416+1940 HU 580 AB : MEASURES
 
 
No records found.

 
 
WDS 15416+1940 : VIRTUAL EYEPIECE
 
 

15416+1940 HU 580A mag 5.35 Sp B9V 15416+1940 HU 580B sep 0.2 P.A. 248.20 mag 5.22 Sp A1V 15416+1940 BU 1451C sep 144.8 P.A. 353.00 mag 13.4 Sp A1V 15416+1940 BU 1451D sep 144.9 P.A. 110.50 mag 12.6 Sp A1V 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 15416+1940 : ALADIN DSS IMAGE @ 15h 41m 33.09s +19° 40' 13.8"
 
 
 
 
WDS 15416+1940 HU 580 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

15416+1940 HU 580AB distance=0' 15433+1954 HJ 2790 distance=28' 15388+1934 CVR 798 distance=40' 15428+1859 GWP2547 distance=45' 15450+1933 CBL 495 distance=50' 15424+1852 GWP2546 distance=51' 15378+1939 GWP2538 distance=54' 15432+1846 LDS4587 distance=59' 15405+1840 A 2076 distance=62' 15456+1859 SLW1135 distance=71' 15465+1957 COU 66 distance=73' 15419+1828 DRS 17AB distance=73' 15419+1828 TOK 302AC distance=73' 15384+2048 SLW1121 distance=82' 15468+1905 A 2077 distance=83' 15410+2105 GRV 910 distance=86' 15482+1925 COU 193 distance=96' 15440+1810 SHN 33 distance=97' 15474+1851 COU 192AB distance=97' 15474+1851 GII 223Aa,Ab distance=97' 15398+2117 AG 197 distance=100' 15382+2111 KPP3962 distance=103' 15485+2015 DBR 320 distance=104' 15404+2123 HU 579 distance=104' 15368+1820 LDS4571 distance=105' 15376+2110 HU 578 distance=106' 15350+2035 CBL 491 distance=108' 15445+1756 NSN 670 distance=113' 15328+1945 HU 577 distance=124' 15359+2125 KPP3293 distance=132' 15340+2057 LDS 976 distance=132' 15506+1909 SLW1142 distance=132' 15326+1903 SLW1104 distance=133' 15509+1911 A 2078 distance=136' 15372+1740 SLW1114 distance=136' 15374+1731 BPM 633 distance=143' 15315+1914 GRV 908 distance=144' 15501+1822 CVR 172 distance=145' 15406+2205 WIS 291 distance=146' 15354+1743 LDS 977 distance=147' 15314+1900 JNN 104 distance=150' 15488+1751 LDS 979 distance=151' 15447+1716 CHR 49AB distance=152' 15377+1719 SLW1118 distance=152' 15521+2015 HJ 2794AB distance=153' 15521+2015 HJ 2794AC distance=153' 15503+2117 SHN 205 distance=157' 15529+2000 HU 747 distance=162' 15358+1720 BRT2421 distance=163' 15439+1700 BPM 638 distance=164' 15440+2220 COU 106 distance=164' 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 15416+1940 HU 580 AB 249 0.2
Show 15416+1940 BU 1451 AB,C 353 144.9
Show 15416+1940 BU 1451 AB,D 109 152.8
Show 15433+1954 HJ 2790 163 11.7 28
Show 15388+1934 CVR 798 154 10.3 40
Show 15428+1859 GWP2547 235 83.7 45
Show 15450+1933 CBL 495 164 15.2 50
Show 15424+1852 GWP2546 232 899.3 51
Show 15378+1939 GWP2538 350 74.1 54
Show 15432+1846 LDS4587 217 8.5 59
Show 15405+1840 A 2076 187 0.8 62
Show 15456+1859 SLW1135 288 11.6 71
Show 15465+1957 COU 66 67 0.5 73
Show 15419+1828 DRS 17 AB 86 2.4 73
Show 15419+1828 TOK 302 AC 274 249.2 73
Show 15384+2048 SLW1121 144 46.7 82
Show 15468+1905 A 2077 223 0.6 83
Show 15410+2105 GRV 910 250 7.5 86
Show 15482+1925 COU 193 282 0.5 96
Show 15440+1810 SHN 33 357 0.3 97
Show 15474+1851 COU 192 AB 189 1.2 97
Show 15474+1851 GII 223 Aa,Ab 164 0.1 97
Show 15398+2117 AG 197 126 3.1 100
Show 15382+2111 KPP3962 32 14.6 103
Show 15485+2015 DBR 320 230 2.1 104
Show 15404+2123 HU 579 136 0.7 104
Show 15368+1820 LDS4571 102 34.6 105
Show 15376+2110 HU 578 136 1.2 106
Show 15350+2035 CBL 491 110 7.4 108
Show 15445+1756 NSN 670 176 0.8 113
Show 15328+1945 HU 577 25 0.3 124
Show 15359+2125 KPP3293 244 37.3 132
Show 15340+2057 LDS 976 185 52.8 132
Show 15506+1909 SLW1142 236 26.4 132
Show 15326+1903 SLW1104 278 27.9 133
Show 15509+1911 A 2078 165 1.1 136
Show 15372+1740 SLW1114 200 10.5 136
Show 15374+1731 BPM 633 248 118.5 143
Show 15315+1914 GRV 908 52 70.6 144
Show 15501+1822 CVR 172 139 54.5 145
Show 15406+2205 WIS 291 342 28.7 146
Show 15354+1743 LDS 977 351 17.6 147
Show 15314+1900 JNN 104 283 0.5 150
Show 15488+1751 LDS 979 258 29.2 151
Show 15447+1716 CHR 49 AB 98 0.1 152
Show 15377+1719 SLW1118 63 47.5 152
Show 15521+2015 HJ 2794 AB 144 23.2 153
Show 15521+2015 HJ 2794 AC 9 23.3 153
Show 15503+2117 SHN 205 -1 0.6 157
Show 15529+2000 HU 747 110 2.5 162
Show 15358+1720 BRT2421 52 4.0 163

 
 
WDS 15416+1940 : COMPONENTS
 
 
  A B C
B pa=248.2°
sep=0.21"
 
C pa=353.0°
sep=144.78"
pa=353.1°
sep=144.83"
 
D pa=110.5°
sep=144.87"
pa=110.4°
sep=145.02"
pa=141.8°
sep=247.59"
 
 
15416+1940 A
 
 
Coord arcsec 2000 154133.09+194013.8 Mag 5.35 Spectral class B9V (blue-white) PmRA -56.00
PmDE -44.0 SAO 101682 HIP 76852 HD 140159
HR 5842 GC 21102 BD BD+20 3138 Bayer Iota Serpentis
Bayer name Iot Ser Flamsteed 21 Serpentis Flamsteed name 21 Ser
SAO
SAO 101682 DelFlag RA1950 PmRA1950 -0.0041
DE1950 PmDE1950 -0.049 Vmag 4.5 SpType A2
Double code Source 70 CatNum 21102 DM BD+20 3138
DMcomp BDsup HD 140159 M HD 0
GC 21102 RA1950rad 4.09855506 DE1950rad 0.34610175 PmRA2000 -0.004
PmDE2000 -0.046
Hipparcos
Catalog H HIP 76852 Proxy H RAhms 15 41 33.09
DEdms +19 40 13.8 Vmag 4.51 VarFlag R Vmag H
RAdeg 235.388 DEdeg 19.6705 AstroRef * Plx 16.97
CCDM 15416+1940 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP BA
Theta 250 Rho 0.203 HD 140159 BD BD+20 3138
CD CP Dm number +20 3138 VIred 0.06
SpType A1V R SpType Coord arcsec 2000 154133.09+194013.8
Hipparcos 2
HIP 76852 Sn 57 So 3 Nc 2
RArad 4.108293612 DErad 0.3433150888 Plx 17.16 PmRA -60.86
PmDE -43.69 E RArad 0.49 E DErad 0.45 E Plx 0.67
E pmRA 0.58 E pmDE 0.57 Hpmag 4.5337 E Hpmag 0.0006
SHp 0.005 VA 0 BV 0.062 E BV 0.003
VI 0.07
CCDM
Ccdm 15416+1940 RComp Comp A Note1
Note2 Discov num DRAs -2.97 DDEs 13.3
R dRAs 10 Year Theta Rho
Obs 4 Vmag 5.3 Sp A2 PmNote *
PmRA -65 PmDE -47 Dm number +20 3138 Cat1 BD
Name2 +19 1456 Cat2 AGK2/3 HD 140159 M HD
ADS BDS A 9744 M ADS BDS N IDS IDS 15371N2000A
HIC 76852
 
 
15416+1940 B
 
 
Coord arcsec 2000 154133.08+194013.7 Mag 5.22 Spectral class A1V (white) Tycho2 1498-01787-1
Calc delta mag 0.13 Calc coord yes
Tycho2
Tycho2 1498-01787-1 Pflag RAmdeg 235.38773106 DEmdeg 19.67040458
PmRA -59.3 PmDE -41.2 E RAmdeg 3 E DEmdeg 3
E pmRA 0.7 E pmDE 0.7 EpRAm 1991.54 EpDEm 1991.41
Num 19 Q RAmdeg 1.3 Q DEmdeg 1.7 Q pmRA 1.4
Q pmDE 1.6 BTmag 4.584 E BTmag 0.014 VTmag 4.513
E VTmag 0.009 Prox 999 TYC T HIP 76852
CCDM AB RAdeg 235.38787472 DEdeg 19.67049972 EpRA 1990 1.79
EpDE 1990 1.68 E RAdeg 3.3 E DEdeg 3.3 Posflg P
Corr 0.2
CCDM
Ccdm 15416+1940 RComp Comp B Note1 *
Note2 Discov num HU 580 DRAs DDEs
R dRAs Year 1902 Theta Rho
Obs 99 Vmag 5.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 9744 M ADS BDS N IDS IDS 15371N2000B
HIC 76852
 
 
15416+1940 C
 
 
Coord arcsec 2000 154131.85+194237.5 Mag 13.4 Spectral class A1V (white) PmRA -14.00
PmDE 8.0 Calc delta mag 8.05 Calc coord yes
CCDM
Ccdm 15416+1940 RComp Comp C Note1
Note2 Discov num BU DRAs DDEs
R dRAs Year 1960 Theta 352 Rho 143.2
Obs 2 Vmag 13.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 9744 M ADS BDS N IDS IDS 15371N2000C
HIC
 
 
15416+1940 D
 
 
Coord arcsec 2000 154142.70+193923.1 Mag 12.6 Spectral class A1V (white) PmRA -7.00
PmDE -17.0 Calc delta mag 7.25 Calc coord yes
CCDM
Ccdm 15416+1940 RComp Comp D Note1
Note2 Discov num BU DRAs DDEs
R dRAs Year 1960 Theta 110 Rho 151.4
Obs 2 Vmag 12.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 9744 M ADS BDS N IDS IDS 15371N2000D
HIC