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JPL Small-Body Database Browser
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71728 (2000 HE64)
Classification: Main-belt Asteroid          SPK-ID: 2071728
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .247712405554917 3.9881e-08  
a 3.058122722991339 2.1159e-08 au
q 2.300587786797002 1.2404e-07 au
i 6.376520266020371 4.4097e-06 deg
node 285.2902336331455 5.9676e-05 deg
peri 192.7542431369974 6.1275e-05 deg
M 258.5963856307007 1.5e-05 deg
tp 2459150.714112819723
(2020-Oct-28.21411282)
8.4591e-05 TDB
period 1953.353259122779
5.35
2.0273e-05
5.55e-08
d
yr
n .1842984612837877 1.9128e-09 deg/d
Q 3.815657659185677 2.6401e-08 au
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      15243 days (41.73 yr)  
   first obs. used      1978-03-05  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56924  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:18:05  

Additional Information
 Earth MOID = 1.31761 au 
 Jupiter MOID = 1.31231 au 
 T_jup = 3.178 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456826.5 (2014-Jun-18.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2471857332877668 4.0271e-08  
q 2.302624890572521 1.2534e-07 au
tp 2457199.424762879057
(2015-Jun-25.92476288)
7.4627e-05 TDB
node 285.3745116483876 5.9632e-05 deg
peri 193.0567095296068 6.1216e-05 deg
i 6.378257438870734 4.4109e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      15243 days (41.73 yr)  
   first obs. used      1978-03-05  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56924  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:18:05  

Additional Information
 Jupiter MOID = 1.31231 au 
 T_jup = 3.178 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.621764609421557E-15 -5.007232833320291E-15 3.979672593280664E-13 -1.038096623037839E-14 1.595404078475564E-13 9.796378706031744E-17
q -5.007232833320291E-15 1.57110072972962E-14 -7.894350316831026E-13 3.722813966320049E-14 -4.236161278368844E-13 4.471287884303275E-16
tp 3.979672593280664E-13 -7.894350316831026E-13 5.569220202010577E-9 1.431946259132355E-11 1.100713917983359E-9 3.298649594815864E-12
node -1.038096623037839E-14 3.722813966320049E-14 1.431946259132355E-11 3.555916023078483E-9 -3.531013761138462E-9 3.446998188326816E-12
peri 1.595404078475564E-13 -4.236161278368844E-13 1.100713917983359E-9 -3.531013761138462E-9 3.747424044078081E-9 -2.793876268918855E-12
i 9.796378706031744E-17 4.471287884303275E-16 3.298649594815864E-12 3.446998188326816E-12 -2.793876268918855E-12 1.945592467035709E-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 14.2   n/a MPO453125  
diameter diameter 4.676 km 0.144 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.140   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71728 (2000 HE64)          Discovered 2000-Apr-26 by LONEOS at Anderson Mesa
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 HE64 = 1978 EK7 = 1998 XT64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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