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Current system
00100+0835
A 1801
HD 542


Nearby doubles
8' : 00099+0827
STF 4

28' : 00093+0900
LDS3129

37' : 00113+0905
PLQ 2

38' : 00088+0801
HDO 2

39' : 00096+0913
SKF1820

49' : 00067+0839
LSC 3

50' : 00067+0827
SLW 7

51' : 00132+0823
PLQ 4

61' : 00138+0812
TOK 360

64' : 00092+0937
TDS1320

66' : 00073+0742
HDS 13

69' : 00082+0937
LDS9085

70' : 00065+0747
GRV 5

70' : 00061+0915
KPP2527

72' : 00137+0750
GRV 15

75' : 00050+0835
GWP 11

76' : 00150+0849
STF 12

85' : 00154+0806
HDO 8

89' : 00061+0943
HDS 7

90' : 00110+1002
GRV 13

96' : 00161+0807
BU 1342

96' : 00161+0902
GWP 32

98' : 00056+0719
LDS3120

100' : 00153+0936
GWP 30

101' : 00166+0814
HDS 37

104' : 00069+0702
PLQ 1



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

00100+0835 A 1801 (HD 542)

 
 
00h 09m 57.47s +08° 34' 37.3" P.A. 18.00 sep 0.3 mag 9.50,9.50 Sp F8 dist. 125.31 pc (408.76 l.y.)
 
 
Coord 2000 00100+0835 Discov num A  1801 Comp Coord arcsec 2000 00 09 57.47 +08 34 37.3
Date first 1908 Date last 2020 Obs 22
Pa first 190 Pa last 18.2 P.A. Now (θ) 18.2°
Sep first 0.5 Sep last 0.337 Sep. Now (ρ) 0.337"
Mag pri 9.50 Mag sec 9.50 delta mag (ΔM) 0 Spectral class F8 (yellow-white)
Pri motion ra -058 Sec motion ra
Pri motion dec -054 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 542 Constellation Pisces HIP 807 Tycho2 0594-00354-1
HD 542 ADS 120 BD BD+07 10 Distance 125.31
Distance ly 408.76
 
 
ORBITAL ELEMENTS
 
 
Period (P)229y Periastron (T)2020y Semi-major axis (a)0.435a
Eccentricity (e)0.132 Inclination (i)94.1° Longitude of periastron (ω)151.4°
Node (Ω)195.9° Notes ReferenceTok2021c
Equinox2000 Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 26.5 0.141
2001 25.6 0.152
2002 24.7 0.164
2003 24.0 0.175
2004 23.3 0.186
2005 22.8 0.197
2006 22.2 0.208
2007 21.8 0.219
2008 21.4 0.229
2009 21.0 0.240
2010 20.6 0.250
2011 20.3 0.259
2012 20.0 0.269
2013 19.7 0.278
2014 19.5 0.286
2015 19.2 0.295
2016 19.0 0.303
2017 18.7 0.311
2018 18.5 0.318
2019 18.3 0.325
2020 18.1 0.332
2021 17.9 0.338
2022 17.8 0.344
2023 17.6 0.349
2024 17.4 0.355
2025 17.3 0.359
2026 17.1 0.364
2027 16.9 0.368
2028 16.8 0.371
2029 16.6 0.374
2030 16.5 0.377


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


 
  


wds00100%2B0835a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 00100+0835 A 1801 (HD 542) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2021c orb - Tokovinin, A. 2021IAUDS.203....1S
Tok2021c Inf. Circ. 203, 1, 2021
 
 
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
00100+0835 A 1801 1979 16 198 0.2 9.50 9.50 F8 000957.47+083437.3
00100+0835 A 1801 2017 17 199 0.3 9.50 9.50 F8 000957.47+083437.3
00100+0835 A 1801 2020 21 18 0.3 9.50 9.50 F8 000957.47+083437.3

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

 
 
WDS 00100+0835 A 1801 (HD 542) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 00100+0835 A 1801 (HD 542) : MEASURES
 
 
No records found.

 
 
WDS 00100+0835 (HD 542) : VIRTUAL EYEPIECE
 
 

00100+0835 A 1801A mag 9.5 Sp F8 00100+0835 A 1801B sep 0.3 P.A. 18.00 mag 9.5 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 00100+0835 (HD 542) : ALADIN DSS IMAGE @ 00h 09m 57.47s +08° 34' 37.3"
 
 
 
 
WDS 00100+0835 A 1801 (HD 542) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

00100+0835 A 1801 distance=0' 00099+0827 STF 4 distance=8' 00093+0900 LDS3129 distance=28' 00113+0905 PLQ 2 distance=37' 00088+0801 HDO 2 distance=38' 00096+0913 SKF1820 distance=39' 00067+0839 LSC 3 distance=49' 00067+0827 SLW 7 distance=50' 00132+0823 PLQ 4 distance=51' 00138+0812 TOK 360 distance=61' 00092+0937 TDS1320 distance=64' 00073+0742 HDS 13 distance=66' 00082+0937 LDS9085 distance=69' 00065+0747 GRV 5 distance=70' 00061+0915 KPP2527 distance=70' 00137+0750 GRV 15 distance=72' 00050+0835 GWP 11 distance=75' 00150+0849 STF 12 distance=76' 00154+0806 HDO 8 distance=85' 00061+0943 HDS 7 distance=89' 00110+1002 GRV 13 distance=90' 00161+0807 BU 1342 distance=96' 00161+0902 GWP 32 distance=96' 00056+0719 LDS3120 distance=98' 00153+0936 GWP 30 distance=100' 00166+0814 HDS 37 distance=101' 00069+0702 PLQ 1 distance=104' 00031+0816 STF3054 distance=104' 00034+0913 SLW9010 distance=105' 00097+1022 KPP 911 distance=108' 00110+1024 TDS1333 distance=111' 00147+0708 CVR 311 distance=112' 00174+0853 A 1803AB distance=112' 00174+0853 POP 229AB,E distance=112' 00174+0853 STF 22AB,C distance=112' 00174+0853 STF 22AB,D distance=112' 00100+1034 UC 330 distance=119' 00030+0723 HJ 3233AB distance=126' 00030+0723 HJ 3233AC distance=126' 00136+0640 OCC 870 distance=127' 00023+0732 LDS9084 distance=130' 00026+0725 SLW9021 distance=130' 00113+0625 GWP 27 distance=131' 00185+0911 CVR 313 distance=132' 00180+0931 AG 1 distance=132' 00137+0635 BU 998 distance=132' 00096+1047 GWP 21 distance=133' 00183+0927 UC 349 distance=135' 00192+0827 GWP 39 distance=137' 00135+0628 OCC 875 distance=138' 00013+0742 BU 9023CD distance=138' 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 00100+0835 A 1801 18 0.3
Show 00099+0827 STF 4 276 5.2 8
Show 00093+0900 LDS3129 200 26.2 28
Show 00113+0905 PLQ 2 234 24.9 37
Show 00088+0801 HDO 2 131 18.6 38
Show 00096+0913 SKF1820 170 6.7 39
Show 00067+0839 LSC 3 16 0.6 49
Show 00067+0827 SLW 7 23 174.1 50
Show 00132+0823 PLQ 4 159 10.5 51
Show 00138+0812 TOK 360 303 6.2 61
Show 00092+0937 TDS1320 218 0.6 64
Show 00073+0742 HDS 13 322 0.4 66
Show 00082+0937 LDS9085 288 2.7 69
Show 00065+0747 GRV 5 70 67.0 70
Show 00061+0915 KPP2527 140 22.8 70
Show 00137+0750 GRV 15 220 54.0 72
Show 00050+0835 GWP 11 185 8.0 75
Show 00150+0849 STF 12 148 11.2 76
Show 00154+0806 HDO 8 327 27.1 85
Show 00061+0943 HDS 7 200 0.3 89
Show 00110+1002 GRV 13 47 35.8 90
Show 00161+0807 BU 1342 146 6.1 96
Show 00161+0902 GWP 32 185 11.6 96
Show 00056+0719 LDS3120 14 235.1 98
Show 00153+0936 GWP 30 30 103.6 100
Show 00166+0814 HDS 37 218 0.5 101
Show 00069+0702 PLQ 1 293 21.0 104
Show 00031+0816 STF3054 181 33.8 104
Show 00034+0913 SLW9010 30 6.0 105
Show 00097+1022 KPP 911 267 7.5 108
Show 00110+1024 TDS1333 65 0.5 111
Show 00147+0708 CVR 311 159 17.8 112
Show 00174+0853 A 1803 AB 307 0.2 112
Show 00174+0853 POP 229 AB,E 239 75.3 112
Show 00174+0853 STF 22 AB,C 234 3.9 112
Show 00174+0853 STF 22 AB,D 151 66.8 112
Show 00100+1034 UC 330 208 23.1 119
Show 00030+0723 HJ 3233 AB 237 20.1 126
Show 00030+0723 HJ 3233 AC 325 83.5 126
Show 00136+0640 OCC 870 -1 0.1 127
Show 00023+0732 LDS9084 128 15.1 130
Show 00026+0725 SLW9021 318 8.3 130
Show 00113+0625 GWP 27 83 10.1 131
Show 00185+0911 CVR 313 65 9.4 132
Show 00180+0931 AG 1 210 11.8 132
Show 00137+0635 BU 998 108 1.3 132
Show 00096+1047 GWP 21 87 9.9 133
Show 00183+0927 UC 349 46 9.0 135
Show 00192+0827 GWP 39 216 52.3 137
Show 00135+0628 OCC 875 -1 0.1 138
Show 00013+0742 BU 9023 CD 52 9.8 138

 
 
WDS 00100+0835 : COMPONENTS
 
 
  A
B pa=18.0°
sep=0.34"
 
 
00100+0835 A
 
 
Componente originario normalizzato AB Name HD 542 Coord arcsec 2000 000957.47+083437.3 Mag 9.5
Spectral class F8 (yellow-white) PmRA -58.00 PmDE -54.0 HIP 807
Tycho2 0594-00354-1 HD 542 BD BD+07 10
Tycho2
Tycho2 0594-00354-1 Pflag RAmdeg 2.48927188 DEmdeg 8.57693041
PmRA -73.6 PmDE -44.4 E RAmdeg 8 E DEmdeg 12
E pmRA 1.8 E pmDE 1.8 EpRAm 1991.10 EpDEm 1990.18
Num 7 Q RAmdeg 0.8 Q DEmdeg 0.6 Q pmRA 0.7
Q pmDE 0.6 BTmag 9.495 E BTmag 0.021 VTmag 8.834
E VTmag 0.017 Prox 999 TYC T HIP 807
CCDM RAdeg 2.48944333 DEdeg 8.57703722 EpRA 1990 1.69
EpDE 1990 1.35 E RAdeg 8.1 E DEdeg 11.9 Posflg
Corr -0.2
Hipparcos
Catalog H HIP 807 Proxy RAhms 00 09 57.47
DEdms +08 34 37.3 Vmag 8.82 VarFlag R Vmag H
RAdeg 2.48945 DEdeg 8.57704 AstroRef Plx 5.8
CCDM 00100+0835 N CCDM I Nsys 1 Ncomp 1
MultFlag G Source Qual M HIP
Theta Rho HD 542 BD BD+07 10
CD CP Dm number +07 10 VIred 0.64
SpType F8 R SpType Coord arcsec 2000 000957.47+083437.3
Hipparcos 2
HIP 807 Sn 5 So 1 Nc 1
RArad 0.0434491446 DErad 0.1496976037 Plx 7.98 PmRA -73.69
PmDE -43.61 E RArad 0.85 E DErad 0.56 E Plx 1.01
E pmRA 0.96 E pmDE 0.61 Hpmag 8.9488 E Hpmag 0.0015
SHp 0.014 VA 0 BV 0.62 E BV 0.023
VI 0.69
CCDM
Ccdm 00100+0835 RComp Comp A Note1
Note2 Discov num DRAs -2.51 DDEs -23.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.5 Sp F8 PmNote *
PmRA -55 PmDE -42 Dm number +07 10 Cat1 BD
Name2 +08 12 Cat2 AGK2/3 HD 542 M HD
ADS BDS A 120 M ADS BDS N IDS IDS 00048N0801A
HIC 807
 
 
00100+0835 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 000957.48+083437.6 Mag 9.5 Calc coord yes
CCDM
Ccdm 00100+0835 RComp Comp B Note1
Note2 Discov num A 1801 DRAs DDEs
R dRAs Year 1908 Theta 190 Rho 0.5
Obs 11 Vmag 9.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 120 M ADS BDS N IDS IDS 00048N0801B
HIC 807