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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 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 
[ hide covariance matrix ]
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1937-Jul-27 21:40 00:02 Jupiter 1.34533186319713 1.34533102004458 1.34533270655937 1.76738083630973 1.36544230178773 2428742.402899374 2.44930756464709 985.555076865667 105.996059465201 89.950625541389 1775352.84771021 T 23 CATAB v2.0f-lin.ifort 2019-Dec-04 06:18:52 2019-Dec-04 06:18
1986-Dec-19 21:36 00:01 Jupiter 1.7857218789476 1.78572042288632 1.78572333501355 1.70314923623236 1.39716002558041 2446784.400258012 1.32494081837859 268.481474107996 85.439785873385 62.7985579522237 1195098.66057366 T 23 CATAB v2.0f-lin.ifort 2019-Dec-04 06:18:52 2019-Dec-04 06:18
1996-May-28 21:52 < 00:01 Jupiter 1.49704343776447 1.49704262496728 1.49704425057979 1.81901085182199 1.47553607423127 2450232.411239571 0.788585979469935 444.496085408456 43.3145485828308 80.5170812070048 1700427.80021914 T 23 CATAB v2.0f-lin.ifort 2019-Dec-04 06:18:52 2019-Dec-04 06:18
2045-Aug-08 09:24 00:01 Jupiter 1.51276369466037 1.51276268772087 1.51276470178337 1.23231857602943 0.631485974361609 2468200.891463055 1.21882336711688 2381.85820737148 760.461165962172 -56.6480051790872 1192787.69487659 T 23 CATAB v2.0f-lin.ifort 2019-Dec-04 06:18:52 2019-Dec-04 06:18
2055-Feb-14 03:48 00:02 Jupiter 1.77865649871955 1.77865506582999 1.77865793161022 2.03636896530965 1.78727977663821 2471677.658361936 1.50654042064202 166.16396770125 25.0784826519127 70.1734699947392 1357815.24458046 T 23 CATAB v2.0f-lin.ifort 2019-Dec-04 06:18:52 2019-Dec-04 06:18
2104-May-27 04:37 00:03 Jupiter 1.35370870883995 1.3537076527813 1.35370976501518 1.46076354155464 0.93937203323176 2489676.692354484 2.98351069158599 1424.9234907922 124.980504893662 -69.8197433605623 2535851.35141008 T 23 CATAB v2.0f-lin.ifort 2019-Dec-04 06:18:52 2019-Dec-04 06:18
2163-May-07 20:38 00:05 Jupiter 1.32013512314533 1.32013445651548 1.32013579014649 1.57788457254789 1.09840048973909 2511206.359621436 5.41971664629422 1816.8656455872 163.656199919429 -81.2686475727915 2169123.02747503 T 23 CATAB v2.0f-lin.ifort 2019-Dec-04 06:18:52 2019-Dec-04 06:18

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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