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Current system
11268-5310
I 883
HD 99574


Nearby doubles
37' : 11306-5256
TDS7896

37' : 11302-5330
TDS7893

38' : 11250-5236
RST9003

38' : 11229-5257
RST1583

41' : 11225-5322
BNS 6AB

41' : 11225-5320
DAM 548

46' : 11247-5229
RST 540

48' : 11219-5252
TDS7820

57' : 11326-5333
TDS7915

63' : 11336-5325
RST1595

64' : 11320-5227
HJ 4446

65' : 11210-5349
TDS7812

66' : 11198-5329
SEE 129

66' : 11260-5415
TDS7857

67' : 11207-5349
TDS7803

73' : 11285-5421
CPO 325

74' : 11340-5235
RST1596

75' : 11351-5315
RSS 266

76' : 11342-5234
TDS7930

78' : 11209-5214
RST4942

79' : 11355-5313
RST1599

83' : 11226-5423
RST1580

83' : 11326-5206
KPP 250

85' : 11262-5434
RST1587

88' : 11350-5223
RST 547

90' : 11331-5419
CKA 1



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.

11268-5310 I 883 (HD 99574)

 
 
11h 26m 47.30s -53° 09' 35.8" P.A. 240.00 sep 0.3 mag 6.83,6.52 Sp K0III+... dist. 187.62 pc (612.02 l.y.)
 
 
Coord 2000 11268-5310 Discov num I   883 Comp Coord arcsec 2000 11 26 47.30 -53 09 35.8
Date first 1910 Date last 2019 Obs 39
Pa first 270 Pa last 240.4 P.A. Now (θ) 243°
Sep first 0.5 Sep last 0.252 Sep. Now (ρ) 0.271"
Mag pri 6.83 Mag sec 6.52 delta mag (ΔM) 0.31 Spectral class K0III+... (yellow-orange)
Pri motion ra -042 Sec motion ra
Pri motion dec +016 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 99574 Constellation Centaurus SAO 239074 HIP 55849
Tycho2 8617-01056-1 Gaia DR2 5348142793675309056 HD 99574 HR 4417
GC 15710 CP CP-52 4567 Distance 187.62 Distance ly 612.02
 
 
ORBITAL ELEMENTS
 
 
Period (P)154.3y Periastron (T)1976.81y Semi-major axis (a)0.224a
Eccentricity (e)0.64 Inclination (i)35.3° Longitude of periastron (ω)311.7°
Node (Ω)129.8° Notesn ReferenceHrt2010a
Equinox2000 Last observation2009 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 210.1 0.185
2001 212.2 0.190
2002 214.2 0.194
2003 216.1 0.198
2004 218.0 0.202
2005 219.7 0.207
2006 221.4 0.211
2007 223.0 0.215
2008 224.6 0.219
2009 226.1 0.223
2010 227.6 0.226
2011 229.0 0.230
2012 230.3 0.234
2013 231.6 0.238
2014 232.9 0.241
2015 234.2 0.245
2016 235.4 0.249
2017 236.5 0.252
2018 237.7 0.255
2019 238.8 0.259
2020 239.9 0.262
2021 240.9 0.265
2022 242.0 0.268
2023 243.0 0.271
2024 244.0 0.274
2025 244.9 0.277
2026 245.9 0.280
2027 246.8 0.283
2028 247.7 0.286
2029 248.6 0.288
2030 249.5 0.291


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


 
  


wds11268-5310a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 11268-5310 I 883 (HD 99574) : NOTES
 
 
discov_num notes refcode
I 883 Spectrum composite; K0III+A2-3V.
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 3.12 +/- 1.21, 5.03, and 2.88 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Hrt2010a orb - Hartkopf, W.I. & Mason, B.D. 2010IAUDS.170....1H
Hrt2010a Inf. Circ. 170, 1, 2010
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 I Innes, R.T.A.
5 I MNRAS 57, 533, 1897 (data also in I__1897b,
5 I I__1897c)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
11268-5310 I 883 2006 35 222 0.2 6.83 6.52 NO 112647.30-530935.8
11268-5310 I 883 2009 36 226 0.2 6.83 6.52 NO 112647.30-530935.8
11268-5310 I 883 2011 38 230 0.2 6.83 6.52 NO 112647.30-530935.8
11268-5310 I 883 2013 39 232 0.2 6.83 6.52 K0III+... NO 112647.30-530935.8
11268-5310 I 883 2019 39 240 0.3 6.83 6.52 K0III+... NO 112647.30-530935.8

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

 
 
WDS 11268-5310 I 883 (HD 99574) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 11268-5310 I 883 (HD 99574) : MEASURES
 
 
No records found.

 
 
WDS 11268-5310 (HD 99574) : VIRTUAL EYEPIECE
 
 

11268-5310 I 883A mag 6.83 Sp K0III 11268-5310 I 883B sep 0.2 P.A. 226.50 mag 6.52 Sp ... 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 11268-5310 (HD 99574) : ALADIN DSS IMAGE @ 11h 26m 47.30s -53° 09' 35.8"
 
 
 
 
WDS 11268-5310 I 883 (HD 99574) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

11268-5310 I 883 distance=0' 11306-5256 TDS7896 distance=37' 11302-5330 TDS7893 distance=37' 11250-5236 RST9003 distance=38' 11229-5257 RST1583 distance=38' 11225-5322 BNS 6AB distance=41' 11225-5322 RST1578AC distance=41' 11225-5320 DAM 548 distance=41' 11247-5229 RST 540 distance=46' 11219-5252 TDS7820 distance=48' 11326-5333 TDS7915 distance=57' 11336-5325 RST1595 distance=63' 11320-5227 HJ 4446 distance=64' 11210-5349 TDS7812 distance=65' 11198-5329 SEE 129 distance=66' 11260-5415 TDS7857 distance=66' 11207-5349 TDS7803 distance=67' 11285-5421 CPO 325 distance=73' 11340-5235 RST1596 distance=74' 11351-5315 RSS 266 distance=75' 11342-5234 TDS7930 distance=76' 11209-5214 RST4942 distance=78' 11355-5313 RST1599 distance=79' 11226-5423 RST1580 distance=83' 11326-5206 KPP 250 distance=83' 11262-5434 RST1587 distance=85' 11350-5223 RST 547 distance=88' 11331-5419 CKA 1 distance=90' 11348-5217 CPO 329AB distance=90' 11348-5217 CPO 329AC distance=90' 11356-5228 KPP2910 distance=90' 11348-5217 CPO 329BC distance=90' 11280-5137 B 1191 distance=94' 11210-5429 I 879 distance=95' 11301-5440 HJ 4442 distance=95' 11361-5358 NSN 284 distance=97' 11376-5322 B 1195 distance=98' 11327-5146 TDS7917 distance=100' 11317-5139 RSS 264 distance=102' 11270-5451 HJ 4436 distance=102' 11209-5437 KPP1823 distance=102' 11226-5134 LDS 351 distance=103' 11286-5453 FIN 416 distance=105' 11317-5445 FIN 44 distance=105' 11288-5453 FIN 185 distance=106' 11166-5215 RST9002 distance=109' 11271-5119 B 1190 distance=111' 11152-5235 TDS7761AB distance=111' 11146-5249 RST1567 distance=112' 11361-5157 TDS7948 distance=112' 11311-5457 TDS7904 distance=114' 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 11268-5310 I 883 240 0.3
Show 11306-5256 TDS7896 214 2.3 37
Show 11302-5330 TDS7893 294 0.4 37
Show 11250-5236 RST9003 69 3.7 38
Show 11229-5257 RST1583 72 2.4 38
Show 11225-5322 BNS 6 AB -1 -1.0 41
Show 11225-5322 RST1578 AC 4.8 41
Show 11225-5320 DAM 548 302 8.3 41
Show 11247-5229 RST 540 300 2.9 46
Show 11219-5252 TDS7820 113 2.3 48
Show 11326-5333 TDS7915 306 0.9 57
Show 11336-5325 RST1595 304 0.6 63
Show 11320-5227 HJ 4446 298 10.4 64
Show 11210-5349 TDS7812 6 1.7 65
Show 11198-5329 SEE 129 6 6.6 66
Show 11260-5415 TDS7857 247 0.5 66
Show 11207-5349 TDS7803 97 0.6 67
Show 11285-5421 CPO 325 42 7.3 73
Show 11340-5235 RST1596 330 3.2 74
Show 11351-5315 RSS 266 170 55.8 75
Show 11342-5234 TDS7930 122 2.2 76
Show 11209-5214 RST4942 177 3.4 78
Show 11355-5313 RST1599 345 0.7 79
Show 11226-5423 RST1580 141 0.5 83
Show 11326-5206 KPP 250 283 3.7 83
Show 11262-5434 RST1587 195 3.4 85
Show 11350-5223 RST 547 313 1.2 88
Show 11331-5419 CKA 1 132 1.1 90
Show 11348-5217 CPO 329 AB 123 18.0 90
Show 11348-5217 CPO 329 AC 134 5.5 90
Show 11356-5228 KPP2910 216 48.5 90
Show 11348-5217 CPO 329 BC 299 12.7 90
Show 11280-5137 B 1191 163 0.7 94
Show 11210-5429 I 879 113 0.3 95
Show 11301-5440 HJ 4442 230 3.4 95
Show 11361-5358 NSN 284 1 16.2 97
Show 11376-5322 B 1195 109 2.3 98
Show 11327-5146 TDS7917 352 0.5 100
Show 11317-5139 RSS 264 213 8.2 102
Show 11270-5451 HJ 4436 357 14.2 102
Show 11209-5437 KPP1823 231 14.1 102
Show 11226-5134 LDS 351 31 32.2 103
Show 11286-5453 FIN 416 230 0.5 105
Show 11317-5445 FIN 44 245 0.6 105
Show 11288-5453 FIN 185 189 3.0 106
Show 11166-5215 RST9002 281 3.4 109
Show 11271-5119 B 1190 32 3.3 111
Show 11152-5235 TDS7761 AB 350 0.6 111
Show 11146-5249 RST1567 35 1.5 112
Show 11361-5157 TDS7948 26 0.7 112
Show 11311-5457 TDS7904 120 0.7 114

 
 
WDS 11268-5310 : COMPONENTS
 
 
  A
B pa=226.5°
sep=0.18"
 
 
11268-5310 A
 
 
Componente originario normalizzato AB Name HD 99574 Coord arcsec 2000 112647.30-530935.8 Mag 6.83
Spectral class K0III (yellow-orange) PmRA -42.00 PmDE 16.0 SAO 239074
HIP 55849 HD 99574 HR 4417 GC 15710
CP CP-52 4567
SAO
SAO 239074 DelFlag RA1950 PmRA1950 -0.0046
DE1950 PmDE1950 0.011 Vmag 5.9 SpType +++
Double code Source 70 CatNum 15710 DM CP-52 4567
DMcomp BDsup HD 99574 M HD 9
GC 15710 RA1950rad 2.98647745 DE1950rad -0.92301422 PmRA2000 -0.0046
PmDE2000 0.014
Hipparcos
Catalog H HIP 55849 Proxy H RAhms 11 26 47.30
DEdms -53 09 35.8 Vmag 5.8 VarFlag R Vmag H
RAdeg 171.697 DEdeg -53.16 AstroRef * Plx 5.22
CCDM 11268-5310 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AS
Theta 187 Rho 0.147 HD 99574 BD
CD CP CP-52 4567 Dm number -52 4567 VIred 0.59
SpType K0III+... R SpType Coord arcsec 2000 112647.30-530935.8
Hipparcos 2
HIP 55849 Sn 55 So 3 Nc 2
RArad 2.9966797735 DErad -0.9278162587 Plx 5.33 PmRA -40.46
PmDE 16.29 E RArad 0.32 E DErad 0.35 E Plx 0.5
E pmRA 0.39 E pmDE 0.41 Hpmag 5.9091 E Hpmag 0.0006
SHp 0.007 VA 0 BV 0.517 E BV 0.004
VI 0.59
CCDM
Ccdm 11268-5310 RComp Comp A Note1
Note2 Discov num DRAs -0.68 DDEs 24.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.5 Sp G0 PmNote *
PmRA -36 PmDE 12 Dm number -52 4567 Cat1 CPD
Name2 239074 Cat2 SAO HD 99574 M HD
ADS BDS M ADS BDS N IDS IDS 11221S5237A
HIC 55849
 
 
11268-5310 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 112647.29-530935.9 Mag 6.52 Spectral class ...
Tycho2 8617-01056-1 HD 99575 Calc delta mag 0.31 Calc coord yes
Tycho2
Tycho2 8617-01056-1 Pflag RAmdeg 171.69692948 DEmdeg -53.15992258
PmRA -42.5 PmDE 15.3 E RAmdeg 3 E DEmdeg 3
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.39 EpDEm 1991.36
Num 14 Q RAmdeg 1.0 Q DEmdeg 1.3 Q pmRA 0.9
Q pmDE 1.1 BTmag 6.404 E BTmag 0.014 VTmag 5.864
E VTmag 0.009 Prox 999 TYC T HIP 55849
CCDM AS RAdeg 171.69709361 DEdeg -53.15995806 EpRA 1990 1.64
EpDE 1990 1.62 E RAdeg 3.4 E DEdeg 3.4 Posflg P
Corr -0.2
CCDM
Ccdm 11268-5310 RComp Comp B Note1
Note2 Discov num I 883 DRAs DDEs
R dRAs Year 1960 Theta 315 Rho 0.2
Obs 18 Vmag 6.9 Sp A2 PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD 99575 M HD
ADS BDS M ADS BDS N N IDS IDS 11221S5237B
HIC 55849