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37960 (1998 HP64)
Classification: Main-belt Asteroid          SPK-ID: 2037960
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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .191579151620496 4.44e-08  
a 2.612609274726674 1.183e-08 au
q 2.112087806358698 1.1342e-07 au
i 3.443602931531829 6.2664e-06 deg
node 202.9694636277002 5.7329e-05 deg
peri 39.26760958078671 5.9552e-05 deg
M 63.18904424137931 1.3814e-05 deg
tp 2458729.761879892440
(2019-Sep-03.26187989)
5.9232e-05 TDB
period 1542.446549221524
4.22
1.0476e-05
2.868e-08
d
yr
n .2333954458141144 1.5852e-09 deg/d
Q 3.113130743094649 1.4096e-08 au
  Orbit Determination Parameters
   # obs. used (total)      741  
   data-arc span      9173 days (25.11 yr)  
   first obs. used      1995-09-26  
   last obs. used      2020-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53757  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:39:49  

Additional Information
 Earth MOID = 1.10079 au 
 Jupiter MOID = 1.90458 au 
 T_jup = 3.380 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457610.5 (2016-Aug-10.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1907000720184577 4.4496e-08  
q 2.115017023213035 1.1349e-07 au
tp 2457186.915809641195
(2015-Jun-13.41580964)
6.1125e-05 TDB
node 203.0107033560391 5.7296e-05 deg
peri 39.28559156271406 5.9539e-05 deg
i 3.443663037344061 6.2672e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      741  
   data-arc span      9173 days (25.11 yr)  
   first obs. used      1995-09-26  
   last obs. used      2020-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53757  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:39:49  

Additional Information
 Jupiter MOID = 1.90458 au 
 T_jup = 3.380 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.979868229435663E-15 -5.033545176114361E-15 -1.751307647423271E-12 1.591400382089006E-14 -4.747138526403558E-13 -2.872742273665456E-16
q -5.033545176114361E-15 1.287903261908885E-14 4.443822245229468E-12 -4.095578876737841E-14 1.210579932719924E-12 7.518326118613451E-16
tp -1.751307647423271E-12 4.443822245229468E-12 3.736228669376072E-9 -2.542373067178984E-11 9.966163693827198E-10 5.012270287899099E-13
node 1.591400382089006E-14 -4.095578876737841E-14 -2.542373067178984E-11 3.282801482822409E-9 -3.283045050394665E-9 -1.008153575970762E-10
peri -4.747138526403558E-13 1.210579932719924E-12 9.966163693827198E-10 -3.283045050394665E-9 3.544835514812062E-9 1.007832096973884E-10
i -2.872742273665456E-16 7.518326118613451E-16 5.012270287899099E-13 -1.008153575970762E-10 1.007832096973884E-10 3.927799525470753E-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 15.6   n/a MPO474235  
diameter diameter 4.038 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.082   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37960 (1998 HP64)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 HP64 = 1999 VM15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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