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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2477522038093706 3.9762e-08  
a 3.059359121334277 2.1116e-08 au
q 2.30139615677941 1.2384e-07 au
i 6.376563647722518 4.3854e-06 deg
node 285.2870423109412 5.956e-05 deg
peri 192.6670642436176 6.1163e-05 deg
M 332.3824332140138 1.5394e-05 deg
tp 2459150.443287374700
(2020-Oct-27.94328737)
8.4475e-05 TDB
period 1954.537989287404
5.35
2.0236e-05
5.54e-08
d
yr
n .184186750000828 1.907e-09 deg/d
Q 3.817322085889144 2.6348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      981  
   data-arc span      15305 days (41.90 yr)  
   first obs. used      1978-03-05  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57401  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:30:36  

Additional Information
 Earth MOID = 1.31813 au 
 Jupiter MOID = 1.30978 au 
 T_jup = 3.177 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456854.5 (2014-Jul-16.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2471961663960295 4.0171e-08  
q 2.302567683822888 1.2513e-07 au
tp 2457199.430723356838
(2015-Jun-25.93072336)
7.4571e-05 TDB
node 285.3745601017667 5.9529e-05 deg
peri 193.0602303034544 6.1117e-05 deg
i 6.378258945703387 4.3865e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      981  
   data-arc span      15305 days (41.90 yr)  
   first obs. used      1978-03-05  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57401  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:30:36  

Additional Information
 Jupiter MOID = 1.30978 au 
 T_jup = 3.177 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.613676336855872E-15 -4.986578342470371E-15 3.904164465420209E-13 -1.035180924331781E-14 1.588476390313168E-13 9.288980201495715E-17
q -4.986578342470371E-15 1.56583207443507E-14 -7.702961402749648E-13 3.707899910810092E-14 -4.21789684292415E-13 4.510246397319155E-16
tp 3.904164465420209E-13 -7.702961402749648E-13 5.560865674326983E-9 1.408924885165489E-11 1.100081928777134E-9 3.265275275508069E-12
node -1.035180924331781E-14 3.707899910810092E-14 1.408924885165489E-11 3.543683363944498E-9 -3.5189010659624E-9 1.841622906667976E-12
peri 1.588476390313168E-13 -4.21789684292415E-13 1.100081928777134E-9 -3.5189010659624E-9 3.735333123240418E-9 -1.203955847615884E-12
i 9.288980201495715E-17 4.510246397319155E-16 3.265275275508069E-12 1.841622906667976E-12 -1.203955847615884E-12 1.924129966931291E-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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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 1.34533175307487 1.345330914512 1.34533259184421 1.76738136891358 1.36544295342838 2428742.402842456 2.40222856517681 977.501503836772 102.494369774455 89.9283224713332 1837339.94100165 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 16:30:42 2020-Feb-23 16:30
1986-Dec-19 21:36 00:01 Jupiter 1.78572186458819 1.78572041853111 1.78572331064985 1.70314861502071 1.39715926558841 2446784.400195028 1.30938419398291 266.539988830073 85.3419868072666 62.8942725211155 1197898.66677686 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 16:30:42 2020-Feb-23 16:30
1996-May-28 21:52 < 00:01 Jupiter 1.49704338011156 1.4970425676307 1.49704419261054 1.81901119718731 1.47553648522341 2450232.411216371 0.781884006197635 440.152258779521 42.4201892311771 80.6735268466181 1727073.75642533 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 16:30:42 2020-Feb-23 16:30
2045-Aug-08 09:24 00:01 Jupiter 1.51276360574818 1.51276260915781 1.51276460252051 1.23231904306461 0.631486833647372 2468200.891409209 1.18941192126109 2328.08824574475 759.25083090605 -56.7855372086542 1200132.5909689 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 16:30:42 2020-Feb-23 16:30
2055-Feb-14 03:48 00:01 Jupiter 1.77865651852191 1.77865512383189 1.77865791321293 2.03636895483024 1.78727976766475 2471677.658344587 1.47092389791375 164.986650757641 24.5051313172352 70.2339148337215 1393982.73912479 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 16:30:42 2020-Feb-23 16:30
2104-May-27 04:37 00:03 Jupiter 1.35370859257877 1.35370754835788 1.35370963691039 1.46076418675148 0.939372979334073 2489676.692346182 2.92132430559352 1384.02442211917 124.456180867517 -69.8088817784849 2572073.13952776 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 16:30:42 2020-Feb-23 16:30
2163-May-07 20:38 00:05 Jupiter 1.32013497277225 1.32013432257689 1.32013562331212 1.57788511172591 1.09840119774638 2511206.359697517 5.3056917937132 1769.43122771211 159.355922760087 -81.2835433741227 2229480.93993491 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 16:30:42 2020-Feb-23 16:30

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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