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Doubles in session


Current system
15542+1659
A 2080
HD 142455


Nearby doubles
27' : 15529+1719
SLW1145

28' : 15538+1726
CVR 805

35' : 15556+1725
BRT1941

46' : 15525+1738
CVR1652

47' : 15519+1732
BPM 641

50' : 15570+1726
HJ 2798AB

56' : 15536+1604
A 2079

64' : 15573+1615
CVR1654

64' : 15578+1737
BRT2422

69' : 15550+1552
BPM 643

70' : 15559+1555
ALD 12AB

70' : 15554+1552
HEI 855

74' : 15530+1547
HEI 239

78' : 15595+1712
RAO 343

79' : 15576+1558
SKF1758

80' : 15555+1542
LDS4602

84' : 15598+1723
STF1993AB

86' : 16001+1709
BOY 9

87' : 15565+1540
STT 584AB

88' : 15590+1606
BPM 645

89' : 15531+1533
BUG 11

92' : 15488+1751
LDS 979

96' : 15529+1526
MUG 21AB

99' : 15511+1531
GWP2558

101' : 15540+1519
CVR 806

101' : 15501+1822
CVR 172



Selections
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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.

15542+1659 A 2080 (HD 142455)

 
 
15h 54m 10.28s +16° 59' 28.0" P.A. 104.00 sep 0.4 mag 8.83,9.20 Sp F2 dist. 132.98 pc (433.78 l.y.)
 
 
Coord 2000 15542+1659 Discov num A  2080 Comp Coord arcsec 2000 15 54 10.28 +16 59 28.0
Date first 1909 Date last 2016 Obs 84
Pa first 317 Pa last 103.6 P.A. Now (θ) 103.6°
Sep first 0.2 Sep last 0.384 Sep. Now (ρ) 0.384"
Mag pri 8.83 Mag sec 9.20 delta mag (ΔM) 0.37 Spectral class F2 (yellow-white)
Pri motion ra +011 Sec motion ra
Pri motion dec +001 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 142455 Constellation Serpens SAO 101804 HIP 77875
Tycho2 1496-00733-1 HD 142455 ADS 9831 BD BD+17 2929
Distance 132.98 Distance ly 433.78
 
 
ORBITAL ELEMENTS
 
 
Period (P)382.99y± 292.64 Periastron (T)2285.17y± 443.01 Semi-major axis (a)0.369a± 0.137
Eccentricity (e)0.157± 0.083 Inclination (i)62.9°± 4.5 Longitude of periastron (ω)40.7°± 217.2
Node (Ω)294°± 12.3 Notesn ReferenceHrt2008
Equinox2000 Last observation2004 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 99.4 0.341
2001 99.9 0.344
2002 100.4 0.347
2003 100.8 0.350
2004 101.3 0.352
2005 101.8 0.355
2006 102.2 0.358
2007 102.7 0.360
2008 103.1 0.363
2009 103.5 0.365
2010 104.0 0.368
2011 104.4 0.370
2012 104.8 0.373
2013 105.2 0.375
2014 105.6 0.377
2015 106.0 0.379
2016 106.4 0.381
2017 106.8 0.383
2018 107.2 0.385
2019 107.6 0.387
2020 108.0 0.389
2021 108.4 0.390
2022 108.7 0.392
2023 109.1 0.394
2024 109.5 0.395
2025 109.9 0.397
2026 110.2 0.398
2027 110.6 0.399
2028 110.9 0.401
2029 111.3 0.402
2030 111.7 0.403


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


 
  


wds15542%2B1659a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 15542+1659 A 2080 (HD 142455) : NOTES
 
 
discov_num notes refcode
A 2080 Recent observations render the quadrant reversal assumed by Baize Baz1956
(1956) very unlikely.
 
 
REFERENCES
 
 
refcode metd author reference
Baz1956 orb - Baize, P. 1956JO.....39...82B
Baz1956 J. Obs. 39, 82-91, 1956
Hrt2008 Su j Hartkopf, W.I., Mason, B.D., & Rafferty, T. 2008AJ....135.1334H
Hrt2008 +orb AJ 135, 1334, 2008
 
 
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
15542+1659 A 2080 2004 75 100 0.4 8.83 9.20 F2 NOD 155410.28+165928.0
15542+1659 A 2080 2006 76 102 0.4 8.83 9.20 F2 NOD 155410.28+165928.0
15542+1659 A 2080 2008 78 100 0.4 8.83 9.20 F2 NOD 155410.28+165928.0
15542+1659 A 2080 2015 82 109 0.2 8.83 9.20 F2 NO 155410.28+165928.0
15542+1659 A 2080 2016 82 104 0.4 8.83 9.20 F2 NO 155410.28+165928.0

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

 
 
WDS 15542+1659 A 2080 (HD 142455) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 15542+1659 A 2080 (HD 142455) : MEASURES
 
 
No records found.

 
 
WDS 15542+1659 (HD 142455) : VIRTUAL EYEPIECE
 
 

15542+1659 A 2080A mag 8.83 Sp F2 15542+1659 A 2080B sep 0.4 P.A. 104.20 mag 9.2 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 15542+1659 (HD 142455) : ALADIN DSS IMAGE @ 15h 54m 10.28s +16° 59' 28.0"
 
 
 
 
WDS 15542+1659 A 2080 (HD 142455) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

15542+1659 A 2080 distance=0' 15529+1719 SLW1145 distance=27' 15538+1726 CVR 805 distance=28' 15556+1725 BRT1941 distance=35' 15525+1738 CVR1652 distance=46' 15519+1732 BPM 641 distance=47' 15570+1726 HJ 2798AB distance=50' 15570+1726 HJ 2798BC distance=50' 15536+1604 A 2079 distance=56' 15573+1615 CVR1654 distance=64' 15578+1737 BRT2422 distance=64' 15550+1552 BPM 643 distance=69' 15559+1555 ALD 12AB distance=70' 15554+1552 HEI 855 distance=70' 15530+1547 HEI 239 distance=74' 15595+1712 RAO 343 distance=78' 15576+1558 SKF1758 distance=79' 15555+1542 LDS4602 distance=80' 15565+1540 STT 584BC distance=82' 15598+1723 STF1994CD distance=83' 15598+1723 STF1993AB distance=84' 15598+1723 STF1993AC distance=84' 16001+1709 BOY 9 distance=86' 15565+1540 STT 584AB distance=87' 15590+1606 BPM 645 distance=88' 15531+1533 BUG 11 distance=89' 15488+1751 LDS 979 distance=92' 15529+1526 MUG 21AB distance=96' 15529+1526 MUG 21Ba,Bb distance=96' 15511+1531 GWP2558 distance=99' 15540+1519 CVR 806 distance=101' 15501+1822 CVR 172 distance=101' 15539+1518 BPM 642 distance=102' 15574+1527 ALD 3 distance=105' 15590+1820 SHY 691 distance=107' 16008+1602 BPM 647 distance=112' 15459+1700 WFC 168 distance=118' 16004+1540 HO 400 distance=120' 16023+1630 GRV1216 distance=120' 15463+1614 HEI 238 distance=123' 15499+1512 BPM 639 distance=125' 15456+1640 COU2511 distance=125' 15585+1506 LDS4614 distance=131' 15447+1716 CHR 49AB distance=137' 15501+1455 BUG 13 distance=138' 15506+1909 SLW1142 distance=140' 15509+1911 A 2078 distance=140' 16019+1825 RAO 597 distance=141' 16029+1548 BPM 649 distance=145' 15455+1543 SLW1133 distance=147' 15509+1441 STF1978 distance=147' 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 15542+1659 A 2080 104 0.4
Show 15529+1719 SLW1145 156 10.9 27
Show 15538+1726 CVR 805 84 19.2 28
Show 15556+1725 BRT1941 321 3.4 35
Show 15525+1738 CVR1652 307 4.5 46
Show 15519+1732 BPM 641 121 86.0 47
Show 15570+1726 HJ 2798 AB 353 52.3 50
Show 15570+1726 HJ 2798 BC 30 7.8 50
Show 15536+1604 A 2079 61 4.0 56
Show 15573+1615 CVR1654 314 3.2 64
Show 15578+1737 BRT2422 179 4.5 64
Show 15550+1552 BPM 643 47 96.6 69
Show 15559+1555 ALD 12 AB 49 1.9 70
Show 15554+1552 HEI 855 90 2.6 70
Show 15530+1547 HEI 239 307 1.0 74
Show 15595+1712 RAO 343 253 3.7 78
Show 15576+1558 SKF1758 103 1.2 79
Show 15555+1542 LDS4602 189 56.0 80
Show 15565+1540 STT 584 BC 163 178.9 82
Show 15598+1723 STF1994 CD 337 17.1 83
Show 15598+1723 STF1993 AB 43 20.1 84
Show 15598+1723 STF1993 AC 179 239.3 84
Show 16001+1709 BOY 9 343 0.1 86
Show 15565+1540 STT 584 AB 325 313.4 87
Show 15590+1606 BPM 645 223 107.3 88
Show 15531+1533 BUG 11 190 0.3 89
Show 15488+1751 LDS 979 258 29.2 92
Show 15529+1526 MUG 21 AB 170 2.5 96
Show 15529+1526 MUG 21 Ba,Bb 111 0.1 96
Show 15511+1531 GWP2558 239 16.0 99
Show 15540+1519 CVR 806 158 18.3 101
Show 15501+1822 CVR 172 139 54.5 101
Show 15539+1518 BPM 642 307 93.9 102
Show 15574+1527 ALD 3 30 1.7 105
Show 15590+1820 SHY 691 344 999.9 107
Show 16008+1602 BPM 647 90 20.1 112
Show 15459+1700 WFC 168 303 7.1 118
Show 16004+1540 HO 400 132 10.7 120
Show 16023+1630 GRV1216 101 10.2 120
Show 15463+1614 HEI 238 142 1.2 123
Show 15499+1512 BPM 639 281 70.6 125
Show 15456+1640 COU2511 19 0.1 125
Show 15585+1506 LDS4614 345 27.8 131
Show 15447+1716 CHR 49 AB 98 0.1 137
Show 15501+1455 BUG 13 17 0.9 138
Show 15506+1909 SLW1142 236 26.4 140
Show 15509+1911 A 2078 165 1.1 140
Show 16019+1825 RAO 597 156 1.3 141
Show 16029+1548 BPM 649 224 37.7 145
Show 15455+1543 SLW1133 224 10.4 147
Show 15509+1441 STF1978 233 14.8 147

 
 
WDS 15542+1659 : COMPONENTS
 
 
  A
B pa=104.2°
sep=0.37"
 
 
15542+1659 A
 
 
Componente originario normalizzato AB Name HD 142455 Coord arcsec 2000 155410.28+165928.0 Mag 8.83
Spectral class F2 (yellow-white) PmRA 11.00 PmDE 1.0 SAO 101804
HIP 77875 Tycho2 1496-00733-1 HD 142455 BD BD+17 2929
Tycho2
Tycho2 1496-00733-1 Pflag RAmdeg 238.54291929 DEmdeg 16.99109077
PmRA 11.6 PmDE -4.4 E RAmdeg 7 E DEmdeg 7
E pmRA 1.0 E pmDE 1.0 EpRAm 1990.83 EpDEm 1990.83
Num 14 Q RAmdeg 1.1 Q DEmdeg 1.0 Q pmRA 1.2
Q pmDE 1.1 BTmag 8.670 E BTmag 0.018 VTmag 8.222
E VTmag 0.014 Prox 999 TYC T HIP 77875
CCDM AS RAdeg 238.54289111 DEdeg 16.99110139 EpRA 1990 1.70
EpDE 1990 1.66 E RAdeg 6.9 E DEdeg 7.1 Posflg P
Corr 0.1
SAO
SAO 101804 DelFlag RA1950 PmRA1950 0.0016
DE1950 PmDE1950 -0.012 Vmag 7.9 SpType F2
Double code Source 28 CatNum 5688 DM BD+17 2929
DMcomp BDsup HD 142455 M HD 0
GC RA1950rad 4.15344123 DE1950rad 0.29910816 PmRA2000 0.0017
PmDE2000 -0.008
Hipparcos
Catalog H HIP 77875 Proxy H RAhms 15 54 10.28
DEdms +16 59 28.0 Vmag 8.15 VarFlag R Vmag H
RAdeg 238.543 DEdeg 16.9911 AstroRef A Plx 8.82
CCDM 15542+1659 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AS
Theta 92 Rho 0.323 HD 142455 BD BD+17 2929
CD CP Dm number +17 2929 VIred 0.44
SpType F2 R SpType Coord arcsec 2000 155410.28+165928.0
Hipparcos 2
HIP 77875 Sn 15 So 3 Nc 2
RArad 4.1633581666 DErad 0.2965506765 Plx 7.52 PmRA 13.69
PmDE -2.72 E RArad 0.77 E DErad 0.55 E Plx 0.84
E pmRA 1.05 E pmDE 0.96 Hpmag 8.2448 E Hpmag 0.0019
SHp 0.013 VA 0 BV 0.417 E BV 0.017
VI 0.48
CCDM
Ccdm 15542+1659 RComp Comp A Note1
Note2 Discov num DRAs -1.73 DDEs 28.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.5 Sp F2 PmNote *
PmRA -2 PmDE -7 Dm number +17 2929 Cat1 BD
Name2 +17 1545 Cat2 AGK2/3 HD 142455 M HD
ADS BDS A 9831 M ADS BDS N IDS IDS 15496N1717A
HIC 77875
 
 
15542+1659 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 155410.30+165927.9 Mag 9.2 Calc delta mag 0.37
Calc coord yes
CCDM
Ccdm 15542+1659 RComp Comp B Note1 *
Note2 Discov num A 2080 DRAs DDEs
R dRAs Year 1909 Theta Rho
Obs 33 Vmag 8.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 9831 M ADS BDS N IDS IDS 15496N1717B
HIC 77875