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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1116731841651384 3.3973e-08  
a 3.013928736675981 1.1573e-08 au
q 2.677353717804562 1.0255e-07 au
i 10.7756674472521 3.4057e-06 deg
node 155.6043941112064 2.0311e-05 deg
peri 211.6986731242641 2.5939e-05 deg
M 77.333195088791 1.6045e-05 deg
tp 2458589.954450123901
(2019-Apr-16.45445012)
8.5314e-05 TDB
period 1911.163734870924
5.23
1.1008e-05
3.014e-08
d
yr
n .1883669062108452 1.085e-09 deg/d
Q 3.350503755547401 1.2866e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2906  
   data-arc span      41670 days (114.09 yr)  
   first obs. used      1906-03-17  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43015  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:29:17  

Additional Information
 Earth MOID = 1.68128 au 
 Jupiter MOID = 2.11054 au 
 T_jup = 3.212 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456831.5 (2014-Jun-23.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1102845990121391 3.3628e-08  
q 2.680070890651029 1.0107e-07 au
tp 2456663.303033594190
(2014-Jan-05.80303359)
8.8391e-05 TDB
node 155.7264001201459 2.0249e-05 deg
peri 208.9539337719033 2.6163e-05 deg
i 10.78940998215143 3.4105e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2906  
   data-arc span      41670 days (114.09 yr)  
   first obs. used      1906-03-17  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43015  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:29:17  

Additional Information
 Jupiter MOID = 2.11054 au 
 T_jup = 3.212 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.130848692055874E-15 -3.3816450417165E-15 4.608550203139682E-13 -1.337081031615727E-15 6.274195179963363E-14 -1.132139926887871E-15
q -3.3816450417165E-15 1.021456961860108E-14 -1.491961582926401E-12 5.307333049062856E-15 -2.094271922339289E-13 3.74915152237652E-15
tp 4.608550203139682E-13 -1.491961582926401E-12 7.812952843925977E-9 -2.582435424479327E-12 1.485003303120487E-9 -5.347267566035008E-12
node -1.337081031615727E-15 5.307333049062856E-15 -2.582435424479327E-12 4.100095108580412E-10 -4.030073184543603E-10 7.650142637466712E-12
peri 6.274195179963363E-14 -2.094271922339289E-13 1.485003303120487E-9 -4.030073184543603E-10 6.845274346307012E-10 -8.501650198278864E-12
i -1.132139926887871E-15 3.74915152237652E-15 -5.347267566035008E-12 7.650142637466712E-12 -8.501650198278864E-12 1.163164948777255E-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 10.9   n/a MPO324321  
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. 2019-August); 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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