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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2477522037348188 3.976e-08  
a 3.05935911791433 2.0957e-08 au
q 2.301396154434843 1.238e-07 au
i 6.376563515911215 4.3854e-06 deg
node 285.2870436265048 5.9362e-05 deg
peri 192.667060655218 6.0953e-05 deg
M 332.3824361449922 1.5238e-05 deg
tp 2459150.443271210197
(2020-Oct-27.94327121)
8.3606e-05 TDB
period 1954.537986010043
5.35
2.0083e-05
5.498e-08
d
yr
n .1841867503096715 1.8925e-09 deg/d
Q 3.817322081393816 2.6149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1000  
   data-arc span      15541 days (42.55 yr)  
   first obs. used      1978-03-05  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56953  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 18:43:06  

Additional Information
 Earth MOID = 1.31813 au 
 Jupiter MOID = 1.30978 au 
 T_jup = 3.177 
[ show covariance matrix ]

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 1.34533170906238 1.34533087673158 1.34533254159638 1.7673813107449 1.36544286305212 2428742.402929609 2.38473654404514 969.930068299121 102.472871988663 89.9392068548509 1837883.72070147 T 27 CATAB v2.0f-lin.ifort 2020-Oct-22 18:43:22 2020-Oct-22 18:43
1986-Dec-19 21:36 00:01 Jupiter 1.78572194458451 1.7857205108939 1.78572337827969 1.70314916346493 1.39715994935503 2446784.400258754 1.29930994652196 264.584940297773 85.0420114514705 62.9551892247396 1203668.06236464 T 27 CATAB v2.0f-lin.ifort 2020-Oct-22 18:43:22 2020-Oct-22 18:43
1996-May-28 21:52 < 00:01 Jupiter 1.49704333450862 1.49704252882867 1.49704414020645 1.81901115156719 1.47553641730316 2450232.411240343 0.77625279593253 438.388827342216 42.314130684811 80.6382154274605 1733875.25407703 T 27 CATAB v2.0f-lin.ifort 2020-Oct-22 18:43:22 2020-Oct-22 18:43
2045-Aug-08 09:24 00:01 Jupiter 1.51276359151894 1.51276259562888 1.51276458759001 1.23231913540372 0.631487005503024 2468200.891366875 1.18215792280968 2322.35740087671 758.811567737558 -56.8295207098919 1201192.54044611 T 27 CATAB v2.0f-lin.ifort 2020-Oct-22 18:43:22 2020-Oct-22 18:43
2055-Feb-14 03:48 00:01 Jupiter 1.7786565648606 1.77865517408725 1.77865795563496 2.03636893762474 1.78727975500299 2471677.658296552 1.46096729868159 164.220391454122 24.4858993061936 70.207821686094 1395751.52020148 T 27 CATAB v2.0f-lin.ifort 2020-Oct-22 18:43:22 2020-Oct-22 18:43
2104-May-27 04:37 00:03 Jupiter 1.35370854965357 1.35370750985392 1.35370958956195 1.46076439503641 0.939373282104604 2489676.692223116 2.89782174034882 1378.29195194316 124.02657267597 -69.8048943434619 2579361.49380149 T 27 CATAB v2.0f-lin.ifort 2020-Oct-22 18:43:22 2020-Oct-22 18:43
2163-May-07 20:38 00:05 Jupiter 1.32013499733609 1.32013434987101 1.3201356451396 1.57788531937738 1.09840150691281 2511206.359487371 5.26318246773473 1757.74124384144 159.027874683693 -81.2719030260722 2233558.00647088 T 27 CATAB v2.0f-lin.ifort 2020-Oct-22 18:43:22 2020-Oct-22 18:43

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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