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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 ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2477124050924385 4.0296e-08  
a 3.058122722699567 2.1464e-08 au
q 2.300587787991821 1.2494e-07 au
i 6.376519980436642 4.5246e-06 deg
node 285.2902325352338 5.9814e-05 deg
peri 192.7542442623216 6.1415e-05 deg
M 258.5963856868839 1.5035e-05 deg
tp 2459150.714112436131
(2020-Oct-28.21411244)
8.4845e-05 TDB
period 1953.353258843227
5.35
2.0565e-05
5.63e-08
d
yr
n .1842984613101633 1.9403e-09 deg/d
Q 3.815657657407313 2.6781e-08 au
  Orbit Determination Parameters
   # obs. used (total)      953  
   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      .57055  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:18:38  

Additional Information
 Earth MOID = 1.31761 au 
 Jupiter MOID = 1.31231 au 
 T_jup = 3.178 
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Orbital Elements at Epoch 2456753.5 (2014-Apr-06.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2471681466173543 4.0681e-08  
q 2.302767387533076 1.2622e-07 au
tp 2457199.404994302822
(2015-Jun-25.90499430)
7.4698e-05 TDB
node 285.3752165885988 5.9768e-05 deg
peri 193.0462112602974 6.1355e-05 deg
i 6.378260539615405 4.5259e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      953  
   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      .57055  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:18:38  

Additional Information
 Jupiter MOID = 1.31231 au 
 T_jup = 3.178 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.654930080579745E-15 -5.092604642654551E-15 4.148328261159039E-13 -1.082247512138567E-14 1.595015753006374E-13 2.425823122375184E-17
q -5.092604642654551E-15 1.59307563601333E-14 -8.326632377641692E-13 3.832003331056199E-14 -4.234640029916187E-13 6.140859638058258E-16
tp 4.148328261159039E-13 -8.326632377641692E-13 5.579789471780256E-9 1.212678231469899E-11 1.102960483383816E-9 2.772919653022456E-12
node -1.082247512138567E-14 3.832003331056199E-14 1.212678231469899E-11 3.572251802262366E-9 -3.547660182021038E-9 7.570820323783219E-12
peri 1.595015753006374E-13 -4.234640029916187E-13 1.102960483383816E-9 -3.547660182021038E-9 3.76442112353611E-9 -6.994382453231752E-12
i 2.425823122375184E-17 6.140859638058258E-16 2.772919653022456E-12 7.570820323783219E-12 -6.994382453231752E-12 2.048393022843481E-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

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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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