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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2477124077724229 4.0923e-08  
a 3.058122724363897 2.1919e-08 au
q 2.300587781048155 1.263e-07 au
i 6.376519754067302 4.679e-06 deg
node 285.2902315928294 6.0051e-05 deg
peri 192.7542452182973 6.1651e-05 deg
M 258.596385181675 1.5092e-05 deg
tp 2459150.714115626552
(2020-Oct-28.21411563)
8.525e-05 TDB
period 1953.353260437845
5.35
2.1001e-05
5.75e-08
d
yr
n .1842984611597115 1.9815e-09 deg/d
Q 3.81565766767964 2.7349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      926  
   data-arc span      15215 days (41.66 yr)  
   first obs. used      1978-03-05  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57536  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:32:06  

Additional Information
 Earth MOID = 1.31761 au 
 Jupiter MOID = 1.31231 au 
 T_jup = 3.178 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456650.5 (2013-Dec-24.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2471280543738685 4.1297e-08  
q 2.303169481206799 1.2755e-07 au
tp 2457199.343546409532
(2015-Jun-25.84354641)
7.4827e-05 TDB
node 285.3770050142282 5.9999e-05 deg
peri 193.0165594187177 6.1587e-05 deg
i 6.37830803068813 4.6805e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      926  
   data-arc span      15215 days (41.66 yr)  
   first obs. used      1978-03-05  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57536  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:32:06  

Additional Information
 Jupiter MOID = 1.31231 au 
 T_jup = 3.178 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.705445597240844E-15 -5.223358554170795E-15 4.41631473047156E-13 -1.155965131363473E-14 1.597618386888252E-13 -8.657039110958309E-17
q -5.223358554170795E-15 1.626985627549966E-14 -9.019557386234823E-13 4.024412646530472E-14 -4.242454355047053E-13 8.803256511579031E-16
tp 4.41631473047156E-13 -9.019557386234823E-13 5.599108876185937E-9 9.214315771316417E-12 1.106407837592543E-9 2.138764999869157E-12
node -1.155965131363473E-14 4.024412646530472E-14 9.214315771316417E-12 3.59993224549923E-9 -3.57570182261394E-9 1.386271501611561E-11
peri 1.597618386888252E-13 -4.242454355047053E-13 1.106407837592543E-9 -3.57570182261394E-9 3.792919591734706E-9 -1.336841585535467E-11
i -8.657039110958309E-17 8.803256511579031E-16 2.138764999869157E-12 1.386271501611561E-11 -1.336841585535467E-11 2.190688828397833E-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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