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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2477522009422621 3.9625e-08  
a 3.059359124041096 1.9579e-08 au
q 2.301396167587123 1.2281e-07 au
i 6.376563516550052 4.3828e-06 deg
node 285.2870457779269 5.7373e-05 deg
peri 192.6670621478591 5.8909e-05 deg
M 332.3824311759395 1.3961e-05 deg
tp 2459150.443298638958
(2020-Oct-27.94329864)
7.6513e-05 TDB
period 1954.537991881369
5.35
1.8763e-05
5.137e-08
d
yr
n .1841867497563845 1.7681e-09 deg/d
Q 3.817322080495068 2.443e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1030  
   data-arc span      15581 days (42.66 yr)  
   first obs. used      1978-03-05  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56657  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:54:51  

Additional Information
 Earth MOID = 1.31813 au 
 Jupiter MOID = 1.30978 au 
 T_jup = 3.177 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456972.5 (2014-Nov-11.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2472304330575424 4.0045e-08  
q 2.302368062748328 1.242e-07 au
tp 2457199.466217710998
(2015-Jun-25.96621771)
6.8993e-05 TDB
node 285.3735444294724 5.7343e-05 deg
peri 193.0771871663027 5.8865e-05 deg
i 6.378313380814983 4.3839e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1030  
   data-arc span      15581 days (42.66 yr)  
   first obs. used      1978-03-05  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56657  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:54:51  

Additional Information
 Jupiter MOID = 1.30978 au 
 T_jup = 3.177 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.6036327781079E-15 -4.938937109705076E-15 4.767889865583962E-13 -1.204139796775299E-14 1.751726654506324E-13 1.990047575148337E-16
q -4.938937109705076E-15 1.542652507480853E-14 -1.201151518648207E-12 3.978610108605022E-14 -4.97352279745641E-13 -7.948363551292126E-18
tp 4.767889865583962E-13 -1.201151518648207E-12 4.759996503220891E-9 8.53191033187769E-13 9.779327545650262E-10 2.56587950597082E-12
node -1.204139796775299E-14 3.978610108605022E-14 8.53191033187769E-13 3.288262251392765E-9 -3.267504551399781E-9 4.016160307155053E-12
peri 1.751726654506324E-13 -4.97352279745641E-13 9.779327545650262E-10 -3.267504551399781E-9 3.465060312090562E-9 -3.481652966333825E-12
i 1.990047575148337E-16 -7.948363551292126E-18 2.56587950597082E-12 4.016160307155053E-12 -3.481652966333825E-12 1.921880552257274E-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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