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JPL Small-Body Database Browser
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42810 (1999 JP72)
Classification: Main-belt Asteroid          SPK-ID: 2042810
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1407407731755464 3.7959e-08  
a 2.355888737348925 9.1075e-09 au
q 2.024319134938876 8.9395e-08 au
i 10.33460946471275 4.4081e-06 deg
node 65.63000112991813 2.4172e-05 deg
peri 182.3397032557781 2.9084e-05 deg
M 278.4636734600421 1.7704e-05 deg
tp 2459299.643266290873
(2021-Mar-26.14326629)
6.5638e-05 TDB
period 1320.780324975012
3.62
7.6589e-06
2.097e-08
d
yr
n .2725661438110921 1.5805e-09 deg/d
Q 2.687458339758975 1.0389e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1289  
   data-arc span      24195 days (66.24 yr)  
   first obs. used      1953-10-10  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50865  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 06:21:27  

Additional Information
 Earth MOID = 1.01067 au 
 Jupiter MOID = 2.33699 au 
 T_jup = 3.519 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456871.5 (2014-Aug-02.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1410988831087623 3.7855e-08  
q 2.02355279664203 8.9193e-08 au
tp 2456658.469501372812
(2013-Dec-31.96950137)
6.1047e-05 TDB
node 65.66637348201715 2.4183e-05 deg
peri 182.4165185995844 2.9094e-05 deg
i 10.33279643022061 4.407e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1289  
   data-arc span      24195 days (66.24 yr)  
   first obs. used      1953-10-10  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50865  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 06:21:27  

Additional Information
 Jupiter MOID = 2.33699 au 
 T_jup = 3.519 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.432972901133229E-15 -3.363515392900867E-15 -3.258796835162567E-13 -7.257973343855139E-15 -7.795588553852972E-14 -1.014157782127052E-16
q -3.363515392900867E-15 7.955410048258706E-15 8.543800088067031E-13 1.66741502015781E-14 2.072576096449992E-13 2.431750486010552E-16
tp -3.258796835162567E-13 8.543800088067031E-13 3.726715363694659E-9 6.611012643358098E-12 1.005109664152648E-9 -2.72304223466257E-12
node -7.257973343855139E-15 1.66741502015781E-14 6.611012643358098E-12 5.848196466865564E-10 -5.732343833706067E-10 -1.023209885137271E-11
peri -7.795588553852972E-14 2.072576096449992E-13 1.005109664152648E-9 -5.732343833706067E-10 8.464788975918041E-10 9.347531573104976E-12
i -1.014157782127052E-16 2.431750486010552E-16 -2.72304223466257E-12 -1.023209885137271E-11 9.347531573104976E-12 1.942136410724414E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO459155  
diameter diameter 2.860 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.451   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

42810 (1999 JP72)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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