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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117976425593044 3.2543e-08  
a 3.014143838781884 1.0866e-08 au
q 2.677169663271417 9.7127e-08 au
i 10.77652560244564 3.3267e-06 deg
node 155.6001357165242 1.7343e-05 deg
peri 211.7441727195954 2.2634e-05 deg
M 114.9466746697013 1.4964e-05 deg
tp 2458590.207126881905
(2019-Apr-16.70712688)
7.9158e-05 TDB
period 1911.368336264069
5.23
1.0336e-05
2.83e-08
d
yr
n .1883467425769177 1.0185e-09 deg/d
Q 3.35111801429235 1.2081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3343  
   data-arc span      42002 days (115.00 yr)  
   first obs. used      1906-03-17  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41035  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:51:54  

Additional Information
 Earth MOID = 1.67952 au 
 Jupiter MOID = 2.11086 au 
 T_jup = 3.212 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457198.5 (2015-Jun-25.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1101947605676402 3.2477e-08  
q 2.681964934647116 9.6523e-08 au
tp 2456664.660349457000
(2014-Jan-07.16034946)
8.0464e-05 TDB
node 155.7180489923787 1.7284e-05 deg
peri 209.3059602378087 2.2816e-05 deg
i 10.79034141925822 3.3331e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3343  
   data-arc span      42002 days (115.00 yr)  
   first obs. used      1906-03-17  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41035  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:51:54  

Additional Information
 Jupiter MOID = 2.11086 au 
 T_jup = 3.212 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.054763141203732E-15 -3.119534641008799E-15 1.451824798625558E-13 1.557583279815155E-15 -5.3136929031874E-15 -5.259495036066518E-16
q -3.119534641008799E-15 9.316732413721303E-15 -4.294892996482825E-13 -4.194032924131153E-15 1.998285505175286E-14 1.644637802415105E-15
tp 1.451824798625558E-13 -4.294892996482825E-13 6.474451794454233E-9 -5.135221348945348E-12 1.209277980546876E-9 -3.930446015022716E-12
node 1.557583279815155E-15 -4.194032924131153E-15 -5.135221348945348E-12 2.987427809069371E-10 -2.943337233929421E-10 4.141486301687815E-13
peri -5.3136929031874E-15 1.998285505175286E-14 1.209277980546876E-9 -2.943337233929421E-10 5.205897238840056E-10 -1.105947463276852E-12
i -5.259495036066518E-16 1.644637802415105E-15 -3.930446015022716E-12 4.141486301687815E-13 -1.105947463276852E-12 1.110954402243803E-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

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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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