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1732 Heike (1943 EY)
Classification: Main-belt Asteroid          SPK-ID: 2001732
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117976476247316 3.2872e-08  
a 3.014143832862985 1.1055e-08 au
q 2.677169642746311 9.8387e-08 au
i 10.77652554931271 3.3356e-06 deg
node 155.6001358316699 1.8241e-05 deg
peri 211.7441775111855 2.3588e-05 deg
M 114.9466709776564 1.5237e-05 deg
tp 2458590.207148281943
(2019-Apr-16.70714828)		 8.0731e-05 TDB
period 1911.368330634014
5.23		 1.0516e-05
2.879e-08		 d
yr
n .1883467431317047 1.0362e-09 deg/d
Q 3.351118022979658 1.2291e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3181  
   data-arc span      41948 days (114.85 yr)  
   first obs. used      1906-03-17  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41758  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:57:44  

Additional Information
 Earth MOID = 1.67952 au 
 Jupiter MOID = 2.11086 au 
 T_jup = 3.212 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457108.5 (2015-Mar-27.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1102397793989502 3.2745e-08  
q 2.681101819621555 9.7592e-08 au
tp 2456664.106798074945
(2014-Jan-06.60679807)		 8.2493e-05 TDB
node 155.7214109483507 1.8184e-05 deg
peri 209.1612506220436 2.3781e-05 deg
i 10.78971990860983 3.3415e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      3181  
   data-arc span      41948 days (114.85 yr)  
   first obs. used      1906-03-17  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41758  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:57:44  

Additional Information
 Jupiter MOID = 2.11086 au 
 T_jup = 3.212 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.072224854725616E-15 -3.179936438954321E-15 2.195313650274004E-13 1.630910961793117E-15 9.869176917992286E-15 -6.116799432940037E-16
q -3.179936438954321E-15 9.52418799837749E-15 -6.814080375495771E-13 -4.170148819873804E-15 -3.192549795557747E-14 1.960825823462646E-15
tp 2.195313650274004E-13 -6.814080375495771E-13 6.80505293989153E-9 -4.971065763668664E-12 1.277904508592757E-9 -4.293546897537899E-12
node 1.630910961793117E-15 -4.170148819873804E-15 -4.971065763668664E-12 3.30663544609528E-10 -3.256159482101546E-10 1.726810331167169E-12
peri 9.869176917992286E-15 -3.192549795557747E-14 1.277904508592757E-9 -3.256159482101546E-10 5.655521629302806E-10 -2.469101184774479E-12
i -6.116799432940037E-16 1.960825823462646E-15 -4.293546897537899E-12 1.726810331167169E-12 -2.469101184774479E-12 1.116575446898146E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.96   n/a E2021B10  
diameter diameter 22.378 km 0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.742 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[King, J.R.; Beaky, M.M. (2010) Minor Planet Bull. 37, 34.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.128   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1732 Heike (1943 EY)          Discovered 1943-Mar-09 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1943 EY = 1934 LC = 1935 TD = 1938 FC = 1938 GB = 1950 NR1 = 1951 WW = 1960 ME = 1961 TU1 = 1966 QJ = 1971 QY1 = A906 FA = A924 PB 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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