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Current system
08539+0149
A 2554
HD 76050


Nearby doubles
17' : 08531+0137
J 75

26' : 08546+0127
BAL1430

36' : 08562+0153
SKF 745

37' : 08510+0147
GRV1011

39' : 08552+0117
BAL1431

45' : 08562+0121
TDS6197

47' : 08567+0130
HEI 745AB

48' : 08543+0236
BAL1854

49' : 08556+0109
GWP1112

50' : 08568+0211
SLW 315

50' : 08509+0213
TVB 205

51' : 08537+0240
BAL2356

58' : 08503+0125
J 74

63' : 08570+0205
GRV1013

67' : 08581+0132
KUI 36AB

69' : 08511-0056
GWP1093

75' : 08512+0253
BAL2353

75' : 08538-0035
STF1292AB

76' : 08515+0256
BAL2354

78' : 08590+0152
HDS1301

79' : 08510+0255
BAL2352

82' : 08568-0041
LDS3834

86' : 08565-0034
CVR1180

87' : 08596+0146
BAL1855

89' : 08503+0301
BAL2350

90' : 08599+0143
BAL1856



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.

08539+0149 A 2554 (HD 76050)

 
 
08h 53m 51.95s +01° 49' 28.0" P.A. 306.00 sep 0.1 mag 7.44,9.64 Sp F0 dist. 67.61 pc (220.54 l.y.)
 
 
Coord 2000 08539+0149 Discov num A  2554 Comp Coord arcsec 2000 08 53 51.95 +01 49 28.0
Date first 1913 Date last 2021 Obs 26
Pa first 323 Pa last 306.3 P.A. Now (θ) 265.8°
Sep first 0.3 Sep last 0.108 Sep. Now (ρ) 0.116"
Mag pri 7.44 Mag sec 9.64 delta mag (ΔM) 2.2 Spectral class F0 (yellow-white)
Pri motion ra +010 Sec motion ra
Pri motion dec -040 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 76050 Constellation Hydra SAO 117242 HIP 43676
Tycho2 0213-00019-1 Gaia DR2 577669635274282752 HD 76050 ADS 7074
BD BD+02 2088 Distance 67.61 Distance ly 220.54
 
 
ORBITAL ELEMENTS
 
 
Period (P)43.86y± 0.8 Periastron (T)2021.18y± 0.3 Semi-major axis (a)0.21a± 0.005
Eccentricity (e)0.502± 0.03 Inclination (i)162.4°± 11.4 Longitude of periastron (ω)339.7°± 17.3
Node (Ω)292.4°± 16.7 Notesn ReferenceTok2015c
Equinox2000 Last observation2014 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 129.5 0.314
2001 126.5 0.313
2002 123.5 0.311
2003 120.3 0.308
2004 117.2 0.304
2005 113.9 0.299
2006 110.5 0.293
2007 106.9 0.286
2008 103.2 0.278
2009 99.2 0.268
2010 94.9 0.257
2011 90.1 0.245
2012 84.9 0.232
2013 79.0 0.217
2014 72.2 0.202
2015 64.1 0.185
2016 54.5 0.167
2017 42.5 0.149
2018 27.3 0.132
2019 7.9 0.117
2020 343.9 0.107
2021 316.8 0.104
2022 289.8 0.107
2023 265.8 0.116
2024 245.8 0.129
2025 229.7 0.144
2026 216.7 0.159
2027 206.0 0.175
2028 197.1 0.191
2029 189.5 0.206
2030 182.9 0.220


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


 
  


wds08539%2B0149a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 08539+0149 A 2554 (HD 76050) : NOTES
 
 
discov_num notes refcode
A 2554 Very difficult object, even in good definition, due to magnitude
difference. All 1936-1941 measures noted as very hard and uncertain.
Aitken has two measures in 1913, a very uncertain one in 1923, and
failed to see the companion in 1935. B__1951a
 
 
REFERENCES
 
 
refcode metd author reference
B__1951a Ma j van den Bos, W.H. 1951CiUO..111...13V
B__1951a +J Union Obs. Johannesburg Circ. 111, 13, 1951
Tok2015c orb+j Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. 2015AJ....150...50T
Tok2015c +St AJ 150, 50, 2015 (some measures corrected in Tok2017b) 2017AJ....154..110T
 
 
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
08539+0149 A 2554 1996 15 140 0.3 7.44 9.64 F0 O 085351.95+014928.0
08539+0149 A 2554 2010 17 270 0.2 7.44 9.64 F0 O 085351.95+014928.0
08539+0149 A 2554 2013 18 258 0.2 7.44 9.64 F0 NO 085351.95+014928.0
08539+0149 A 2554 2014 19 250 0.2 7.44 9.64 F0 NO 085351.95+014928.0
08539+0149 A 2554 2016 21 43 0.2 7.44 9.64 F0 NO 085351.95+014928.0
08539+0149 A 2554 2018 23 14 0.1 7.44 9.64 F0 NO 085351.95+014928.0
08539+0149 A 2554 2020 24 349 0.1 7.44 9.64 F0 NO 085351.95+014928.0
08539+0149 A 2554 2021 26 306 0.1 7.44 9.64 F0 NO 085351.95+014928.0

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

 
 
WDS 08539+0149 A 2554 (HD 76050) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 08539+0149 A 2554 (HD 76050) : MEASURES
 
 
No records found.

 
 
WDS 08539+0149 (HD 76050) : VIRTUAL EYEPIECE
 
 

08539+0149 A 2554A mag 7.44 Sp F0 08539+0149 A 2554B sep 0.1 P.A. 306.30 mag 9.64 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 08539+0149 (HD 76050) : ALADIN DSS IMAGE @ 08h 53m 51.95s +01° 49' 28.0"
 
 
 
 
WDS 08539+0149 A 2554 (HD 76050) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

08539+0149 A 2554 distance=0' 08531+0137 J 75 distance=17' 08546+0127 BAL1430 distance=26' 08562+0153 SKF 745 distance=36' 08510+0147 GRV1011 distance=37' 08552+0117 BAL1431 distance=39' 08562+0121 TDS6197 distance=45' 08567+0130 HEI 745AB distance=47' 08567+0130 GII 39AC distance=47' 08543+0236 BAL1854 distance=48' 08556+0109 GWP1112 distance=49' 08568+0211 SLW 315 distance=50' 08509+0213 TVB 205 distance=50' 08537+0240 BAL2356 distance=51' 08503+0125 J 74 distance=58' 08570+0205 GRV1013 distance=63' 08581+0132 KUI 36AB distance=67' 08511-0056 GWP1093 distance=69' 08512+0253 BAL2353 distance=75' 08538-0035 STF1292AB distance=75' 08538-0035 UC 1728AC distance=75' 08515+0256 BAL2354 distance=76' 08590+0152 HDS1301 distance=78' 08510+0255 BAL2352 distance=79' 08568-0041 LDS3834 distance=82' 08565-0034 CVR1180 distance=86' 08596+0146 BAL1855 distance=87' 08503+0301 BAL2350 distance=89' 08599+0143 BAL1856 distance=90' 08522+0318 BAL2355 distance=91' 08486+0237 A 2551 distance=92' 08487+0057 A 2552 distance=95' 08540-0015 BAL1147 distance=95' 08540+0325 SLW 310 distance=96' 08482+0235 BU 335 distance=97' 09004+0151 GWP1127 distance=99' 08501+0311 BAL2349 distance=100' 08473+0216 CVR1164 distance=103' 08474+0226 LDS3819 distance=103' 08495+0311 SLW 300 distance=104' 08492+0030 KPP3764 distance=107' 08486+0304 A 2550 distance=109' 09012+0157 CRC 57AB distance=110' 09012+0157 CRC 57Aa,Ab distance=110' 08570+0321 GRV1014 distance=111' 08483+0033 STT 194 distance=113' 08479-0040 BAL 857 distance=114' 08505+0333 BAL2351 distance=115' 08472+0251 CVR1163 distance=118' 08488+0020 TDS6112 distance=118' 08480+0308 BAL2347AB distance=118' 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 08539+0149 A 2554 306 0.1
Show 08531+0137 J 75 40 3.4 17
Show 08546+0127 BAL1430 110 11.5 26
Show 08562+0153 SKF 745 199 1.1 36
Show 08510+0147 GRV1011 228 9.5 37
Show 08552+0117 BAL1431 193 10.7 39
Show 08562+0121 TDS6197 314 1.8 45
Show 08567+0130 HEI 745 AB 223 0.4 47
Show 08567+0130 GII 39 AC 235 1.8 47
Show 08543+0236 BAL1854 350 19.5 48
Show 08556+0109 GWP1112 25 34.6 49
Show 08568+0211 SLW 315 129 26.0 50
Show 08509+0213 TVB 205 128 2.4 50
Show 08537+0240 BAL2356 300 14.2 51
Show 08503+0125 J 74 126 9.3 58
Show 08570+0205 GRV1013 304 40.0 63
Show 08581+0132 KUI 36 AB 202 2.8 67
Show 08511-0056 GWP1093 142 15.0 69
Show 08512+0253 BAL2353 197 15.5 75
Show 08538-0035 STF1292 AB 188 6.1 75
Show 08538-0035 UC 1728 AC 330 27.8 75
Show 08515+0256 BAL2354 40 8.6 76
Show 08590+0152 HDS1301 329 1.8 78
Show 08510+0255 BAL2352 297 19.4 79
Show 08568-0041 LDS3834 288 3.6 82
Show 08565-0034 CVR1180 341 3.4 86
Show 08596+0146 BAL1855 86 16.6 87
Show 08503+0301 BAL2350 334 6.6 89
Show 08599+0143 BAL1856 43 10.7 90
Show 08522+0318 BAL2355 334 11.2 91
Show 08486+0237 A 2551 158 0.1 92
Show 08487+0057 A 2552 208 0.3 95
Show 08540-0015 BAL1147 44 15.4 95
Show 08540+0325 SLW 310 62 41.2 96
Show 08482+0235 BU 335 265 2.6 97
Show 09004+0151 GWP1127 33 12.1 99
Show 08501+0311 BAL2349 204 6.1 100
Show 08473+0216 CVR1164 319 3.7 103
Show 08474+0226 LDS3819 295 14.1 103
Show 08495+0311 SLW 300 98 16.3 104
Show 08492+0030 KPP3764 19 2.4 107
Show 08486+0304 A 2550 204 0.4 109
Show 09012+0157 CRC 57 AB 156 3.1 110
Show 09012+0157 CRC 57 Aa,Ab 153 0.1 110
Show 08570+0321 GRV1014 71 25.5 111
Show 08483+0033 STT 194 57 12.6 113
Show 08479-0040 BAL 857 68 10.0 114
Show 08505+0333 BAL2351 110 14.2 115
Show 08472+0251 CVR1163 307 4.1 118
Show 08488+0020 TDS6112 288 0.5 118
Show 08480+0308 BAL2347 AB 204 4.0 118

 
 
WDS 08539+0149 : COMPONENTS
 
 
  A
B pa=306.3°
sep=0.11"
 
 
08539+0149 A
 
 
Componente originario normalizzato AB Name HD 76050 Coord arcsec 2000 085351.95+014928.0 Mag 7.44
Spectral class F0 (yellow-white) PmRA 10.00 PmDE -40.0 SAO 117242
HIP 43676 Tycho2 0213-00019-1 HD 76050 BD BD+02 2088
Tycho2
Tycho2 0213-00019-1 Pflag RAmdeg 133.46646271 DEmdeg 1.82433872
PmRA 9.7 PmDE -40.2 E RAmdeg 5 E DEmdeg 6
E pmRA 1.0 E pmDE 1.1 EpRAm 1991.31 EpDEm 1990.76
Num 13 Q RAmdeg 1.2 Q DEmdeg 0.8 Q pmRA 1.1
Q pmDE 0.8 BTmag 7.605 E BTmag 0.016 VTmag 7.269
E VTmag 0.011 Prox 999 TYC T HIP 43676
CCDM AB RAdeg 133.46644000 DEdeg 1.82443556 EpRA 1990 1.77
EpDE 1990 1.36 E RAdeg 4.5 E DEdeg 5.7 Posflg P
Corr 0.1
SAO
SAO 117242 DelFlag RA1950 PmRA1950 0.0007
DE1950 PmDE1950 -0.046 Vmag 7.7 SpType F0
Double code Source 30 CatNum 3581 DM BD+02 2088
DMcomp BDsup HD 76050 M HD 0
GC RA1950rad 2.31812671 DE1950rad 0.0351716 PmRA2000 0.0009
PmDE2000 -0.043
Hipparcos
Catalog H HIP 43676 Proxy H RAhms 08 53 51.95
DEdms +01 49 28.0 Vmag 7.23 VarFlag R Vmag G
RAdeg 133.466 DEdeg 1.82443 AstroRef * Plx 14.64
CCDM 08539+0149 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 153 Rho 0.282 HD 76050 BD BD+02 2088
CD CP Dm number +02 2088 VIred 0.4
SpType F0 R SpType Coord arcsec 2000 085351.95+014928.0
Hipparcos 2
HIP 43676 Sn 55 So 3 Nc 2
RArad 2.3294288281 DErad 0.0318423721 Plx 14.79 PmRA 4.95
PmDE -43.06 E RArad 0.75 E DErad 0.59 E Plx 1.02
E pmRA 0.94 E pmDE 0.67 Hpmag 7.303 E Hpmag 0.0017
SHp 0.008 VA 0 BV 0.345 E BV 0.015
VI 0.4
CCDM
Ccdm 08539+0149 RComp Comp A Note1
Note2 Discov num DRAs -2.08 DDEs 27.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.3 Sp F0 PmNote *
PmRA 3 PmDE -47 Dm number +02 2088 Cat1 BD
Name2 +02 1202 Cat2 AGK2/3 HD 76050 M HD
ADS BDS A 7074 M ADS BDS N IDS IDS 08487N0212A
HIC 43676
 
 
08539+0149 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 085351.94+014928.1 Mag 9.64 Calc delta mag 2.2
Calc coord yes
CCDM
Ccdm 08539+0149 RComp Comp B Note1
Note2 Discov num A 2554 DRAs DDEs
R dRAs Year 1941 Theta 255 Rho 0.3
Obs 4 Vmag 9.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 7074 M ADS BDS N IDS IDS 08487N0212B
HIC 43676