stampa
Login

Saving a selection in a list is possibile.
Create your account here!


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
15405+1840
A 2076
HD 139939


Nearby doubles
24' : 15419+1828
DRS 17AB

29' : 15424+1852
GWP2546

38' : 15428+1859
GWP2547

39' : 15432+1846
LDS4587

55' : 15368+1820
LDS4571

59' : 15440+1810
SHN 33

60' : 15388+1934
CVR 798

62' : 15416+1940
HU 580AB

71' : 15378+1939
GWP2538

73' : 15445+1756
NSN 670

76' : 15456+1859
SLW1135

77' : 15372+1740
SLW1114

83' : 15374+1731
BPM 633

84' : 15450+1933
CBL 495

84' : 15433+1954
HJ 2790

91' : 15377+1719
SLW1118

94' : 15354+1743
LDS 977

94' : 15468+1905
A 2077

100' : 15474+1851
COU 192AB

104' : 15447+1716
CHR 49AB

105' : 15358+1720
BRT2421

112' : 15439+1700
BPM 638

112' : 15427+1653
SLW1127

115' : 15399+1646
COU2510

115' : 15326+1903
SLW1104

116' : 15465+1957
COU 66



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.

15405+1840 A 2076 (HD 139939)

 
 
15h 40m 28.45s +18° 40' 18.0" P.A. 187.00 sep 0.8 mag 8.28,8.44 Sp A2 dist. 309.6 pc (1009.92 l.y.)
 
 
Coord 2000 15405+1840 Discov num A  2076 Comp Coord arcsec 2000 15 40 28.45 +18 40 18.0
Date first 1909 Date last 2018 Obs 98
Pa first 146 Pa last 187.3 P.A. Now (θ) 187.3°
Sep first 0.2 Sep last 0.75 Sep. Now (ρ) 0.75"
Mag pri 8.28 Mag sec 8.44 delta mag (ΔM) 0.16 Spectral class A2 (white)
Pri motion ra -019 Sec motion ra -019
Pri motion dec +019 Sec motion dec +019
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 139939 Constellation Serpens SAO 101675 HIP 76769
Tycho2 1498-01693-1 Gaia DR2 1209819483295604864 HD 139939 ADS 9742
BD BD+19 3000 Distance 309.6 Distance ly 1009.92
 
 
ORBITAL ELEMENTS
 
 
Period (P)776y Periastron (T)1895y Semi-major axis (a)0.823a
Eccentricity (e)0.38 Inclination (i)73.8° Longitude of periastron (ω)95°
Node (Ω)1.3° Notes ReferenceZir2014a
Equinox2000 Last observation2008 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 183.1 0.707
2001 183.3 0.709
2002 183.4 0.711
2003 183.6 0.713
2004 183.8 0.714
2005 183.9 0.716
2006 184.1 0.718
2007 184.2 0.719
2008 184.4 0.721
2009 184.5 0.722
2010 184.7 0.724
2011 184.9 0.725
2012 185.0 0.726
2013 185.2 0.727
2014 185.3 0.728
2015 185.5 0.730
2016 185.6 0.731
2017 185.8 0.731
2018 185.9 0.732
2019 186.1 0.733
2020 186.2 0.734
2021 186.4 0.735
2022 186.5 0.735
2023 186.7 0.736
2024 186.8 0.737
2025 187.0 0.737
2026 187.1 0.738
2027 187.3 0.738
2028 187.4 0.739
2029 187.6 0.739
2030 187.7 0.739


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


 
  


wds15405%2B1840a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 15405+1840 A 2076 (HD 139939) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Zir2014a orb - Zirm, H. 2014IAUDS.182....1Z
Zir2014a Inf. Circ. 182, 1, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15405+1840 A 2076 2005 77 184 0.7 8.28 8.44 A2 D 154028.45+184018.0
15405+1840 A 2076 2007 79 184 0.7 8.28 8.44 A2 D 154028.45+184018.0
15405+1840 A 2076 2008 79 185 0.7 8.28 8.44 A2 D 154028.45+184018.0
15405+1840 A 2076 2012 84 185 0.7 8.28 8.44 A2 O 154028.45+184018.0
15405+1840 A 2076 2015 86 186 0.8 8.28 8.44 A2 O 154028.45+184018.0
15405+1840 A 2076 2017 88 186 0.7 8.28 8.44 A2 O 154028.45+184018.0
15405+1840 A 2076 2018 93 187 0.7 8.28 8.44 A2 O 154028.45+184018.0

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

 
 
WDS 15405+1840 A 2076 (HD 139939) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 22/06/10 daedalus1 very difficult oblunged 180   This was an attempt to identify a separation below the Rayleigh limit of my 150mm refractor. Seeing: Pickering 6, good. x200: Slight elongation along a North-South axis. x300: Definite elongation in the direction described. x600: Large, turbulent artifact, affected so by the seeing, but I had the impression of two pinpoints in the glare of the turbulence, very occasional, and not enough to be sure of the binary nature of the star. x800: Absolutely unmistakeable! Two definite pinpoints within the turbulent artifact. Spurious disks just barely touching, split by a line somewhat darker than its surroundings.

 
 
WDS 15405+1840 A 2076 (HD 139939) : MEASURES
 
 
No records found.

 
 
WDS 15405+1840 (HD 139939) : VIRTUAL EYEPIECE
 
 

15405+1840 A 2076A mag 8.28 Sp A2 15405+1840 A 2076B sep 0.8 P.A. 186.90 mag 8.44 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 15405+1840 (HD 139939) : ALADIN DSS IMAGE @ 15h 40m 28.45s +18° 40' 18.0"
 
 
 
 
WDS 15405+1840 A 2076 (HD 139939) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

15405+1840 A 2076 distance=0' 15419+1828 DRS 17AB distance=24' 15419+1828 TOK 302AC distance=24' 15424+1852 GWP2546 distance=29' 15428+1859 GWP2547 distance=38' 15432+1846 LDS4587 distance=39' 15368+1820 LDS4571 distance=55' 15440+1810 SHN 33 distance=59' 15388+1934 CVR 798 distance=60' 15416+1940 HU 580AB distance=62' 15416+1940 BU 1451AB,C distance=62' 15416+1940 BU 1451AB,D distance=62' 15378+1939 GWP2538 distance=71' 15445+1756 NSN 670 distance=73' 15456+1859 SLW1135 distance=76' 15372+1740 SLW1114 distance=77' 15374+1731 BPM 633 distance=83' 15450+1933 CBL 495 distance=84' 15433+1954 HJ 2790 distance=84' 15377+1719 SLW1118 distance=91' 15354+1743 LDS 977 distance=94' 15468+1905 A 2077 distance=94' 15474+1851 COU 192AB distance=100' 15474+1851 GII 223Aa,Ab distance=100' 15447+1716 CHR 49AB distance=104' 15358+1720 BRT2421 distance=105' 15439+1700 BPM 638 distance=112' 15427+1653 SLW1127 distance=112' 15399+1646 COU2510 distance=115' 15326+1903 SLW1104 distance=115' 15465+1957 COU 66 distance=116' 15482+1925 COU 193 distance=119' 15328+1945 HU 577 distance=127' 15459+1700 WFC 168 distance=128' 15488+1751 LDS 979 distance=130' 15314+1900 JNN 104 distance=131' 15315+1914 GRV 908 distance=132' 15384+2048 SLW1121 distance=132' 15326+1733 LEP 147 distance=132' 15361+1639 LDS4570 distance=136' 15501+1822 CVR 172 distance=139' 15350+2035 CBL 491 distance=139' 15456+1640 COU2511 distance=141' 15410+2105 GRV 910 distance=146' 15506+1909 SLW1142 distance=147' 15485+2015 DBR 320 distance=148' 15509+1911 A 2078 distance=151' 15382+2111 KPP3962 distance=155' 15376+2110 HU 578 distance=155' 15310+1725 NSN 666 distance=156' 15398+2117 AG 197 distance=157' 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 15405+1840 A 2076 187 0.8
Show 15419+1828 DRS 17 AB 86 2.4 24
Show 15419+1828 TOK 302 AC 274 249.2 24
Show 15424+1852 GWP2546 232 899.3 29
Show 15428+1859 GWP2547 235 83.7 38
Show 15432+1846 LDS4587 217 8.5 39
Show 15368+1820 LDS4571 102 34.6 55
Show 15440+1810 SHN 33 357 0.3 59
Show 15388+1934 CVR 798 154 10.3 60
Show 15416+1940 HU 580 AB 249 0.2 62
Show 15416+1940 BU 1451 AB,C 353 144.9 62
Show 15416+1940 BU 1451 AB,D 109 152.8 62
Show 15378+1939 GWP2538 350 74.1 71
Show 15445+1756 NSN 670 176 0.8 73
Show 15456+1859 SLW1135 288 11.6 76
Show 15372+1740 SLW1114 200 10.5 77
Show 15374+1731 BPM 633 248 118.5 83
Show 15450+1933 CBL 495 164 15.2 84
Show 15433+1954 HJ 2790 163 11.7 84
Show 15377+1719 SLW1118 63 47.5 91
Show 15354+1743 LDS 977 351 17.6 94
Show 15468+1905 A 2077 223 0.6 94
Show 15474+1851 COU 192 AB 189 1.2 100
Show 15474+1851 GII 223 Aa,Ab 164 0.1 100
Show 15447+1716 CHR 49 AB 98 0.1 104
Show 15358+1720 BRT2421 52 4.0 105
Show 15439+1700 BPM 638 237 56.9 112
Show 15427+1653 SLW1127 140 13.2 112
Show 15399+1646 COU2510 35 0.2 115
Show 15326+1903 SLW1104 278 27.9 115
Show 15465+1957 COU 66 67 0.5 116
Show 15482+1925 COU 193 282 0.5 119
Show 15328+1945 HU 577 25 0.3 127
Show 15459+1700 WFC 168 303 7.1 128
Show 15488+1751 LDS 979 258 29.2 130
Show 15314+1900 JNN 104 283 0.5 131
Show 15315+1914 GRV 908 52 70.6 132
Show 15384+2048 SLW1121 144 46.7 132
Show 15326+1733 LEP 147 29 4.4 132
Show 15361+1639 LDS4570 115 17.6 136
Show 15501+1822 CVR 172 139 54.5 139
Show 15350+2035 CBL 491 110 7.4 139
Show 15456+1640 COU2511 19 0.1 141
Show 15410+2105 GRV 910 250 7.5 146
Show 15506+1909 SLW1142 236 26.4 147
Show 15485+2015 DBR 320 230 2.1 148
Show 15509+1911 A 2078 165 1.1 151
Show 15382+2111 KPP3962 32 14.6 155
Show 15376+2110 HU 578 136 1.2 155
Show 15310+1725 NSN 666 303 2.4 156
Show 15398+2117 AG 197 126 3.1 157

 
 
WDS 15405+1840 : COMPONENTS
 
 
  A
B pa=186.9°
sep=0.75"
 
 
15405+1840 A
 
 
Componente originario normalizzato AB Name HD 139939 Coord arcsec 2000 154028.45+184018.0 Mag 8.28
Spectral class A2 (white) PmRA -19.00 PmDE 19.0 SAO 101675
HIP 76769 Tycho2 1498-01693-1 HD 139939 ADS 9742
BD BD+19 3000
Tycho2
Tycho2 1498-01693-1 Pflag RAmdeg 235.11852785 DEmdeg 18.67156745
PmRA -18.8 PmDE 18.5 E RAmdeg 7 E DEmdeg 6
E pmRA 1.1 E pmDE 1.0 EpRAm 1990.97 EpDEm 1991.03
Num 12 Q RAmdeg 0.6 Q DEmdeg 0.5 Q pmRA 0.5
Q pmDE 0.4 BTmag 7.979 E BTmag 0.018 VTmag 7.717
E VTmag 0.013 Prox 999 TYC T HIP 76769
CCDM AB RAdeg 235.11857389 DEdeg 18.67152444 EpRA 1990 1.65
EpDE 1990 1.62 E RAdeg 6.6 E DEdeg 6.2 Posflg P
Corr -0.1
SAO
SAO 101675 DelFlag RA1950 PmRA1950 -0.0005
DE1950 PmDE1950 0.015 Vmag 7.5 SpType A2
Double code Source 28 CatNum 5610 DM BD+19 3000
DMcomp BDsup HD 139939 M HD 0
GC RA1950rad 4.09376496 DE1950rad 0.32867435 PmRA2000 -0.0005
PmDE2000 0.018
Hipparcos
Catalog H HIP 76769 Proxy H RAhms 15 40 28.46
DEdms +18 40 17.2 Vmag 7.59 VarFlag R Vmag H
RAdeg 235.119 DEdeg 18.6714 AstroRef B Plx 4.69
CCDM 15405+1840 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP BA
Theta 2 Rho 0.688 HD 139939 BD BD+19 3000
CD CP Dm number +19 3000 VIred 0.28
SpType A2 R SpType Coord arcsec 2000 154028.46+184017.2
Hipparcos 2
HIP 76769 Sn 15 So 3 Nc 2
RArad 4.1035932256 DErad 0.3258779785 Plx 3.23 PmRA -19.1
PmDE 17.02 E RArad 1.18 E DErad 2.78 E Plx 1.74
E pmRA 1.67 E pmDE 3.46 Hpmag 7.6601 E Hpmag 0.0022
SHp 0.012 VA 0 BV 0.242 E BV 0.014
VI 0.27
CCDM
Ccdm 15405+1840 RComp Comp A Note1
Note2 Discov num DRAs -1.57 DDEs 17.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.4 Sp A2 PmNote *
PmRA -25 PmDE 16 Dm number +19 3000 Cat1 BD
Name2 +18 1412 Cat2 AGK2/3 HD 139939 M HD
ADS BDS A 9742 M ADS BDS N IDS IDS 15360N1900A
HIC 76769
 
 
15405+1840 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 154028.44+184017.3 Mag 8.44 PmRA -19.00
PmDE 19.0 Calc delta mag 0.16 Calc coord yes
CCDM
Ccdm 15405+1840 RComp Comp B Note1
Note2 Discov num A 2076 DRAs DDEs
R dRAs Year 1960 Theta 176 Rho 0.6
Obs 32 Vmag 8.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 9742 M ADS BDS N IDS IDS 15360N1900B
HIC 76769