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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 ]

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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1407407662768941 3.4679e-08  
a 2.355888735983252 8.6776e-09 au
q 2.024319150017866 8.2683e-08 au
i 10.33461018148894 3.8735e-06 deg
node 65.62999815907676 2.2593e-05 deg
peri 182.3397081843968 2.7442e-05 deg
M 278.4636724730517 1.7401e-05 deg
tp 2459299.643269651864
(2021-Mar-26.14326965)
6.4629e-05 TDB
period 1320.780323826557
3.62
7.2974e-06
1.998e-08
d
yr
n .2725661440480958 1.5059e-09 deg/d
Q 2.687458321948638 9.8989e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1472  
   data-arc span      24307 days (66.55 yr)  
   first obs. used      1953-10-10  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49166  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:09:13  

Additional Information
 Earth MOID = 1.01067 au 
 Jupiter MOID = 2.33699 au 
 T_jup = 3.519 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457244.5 (2015-Aug-10.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412631579711195 3.46e-08  
q 2.022689357891222 8.2526e-08 au
tp 2456658.335668586478
(2013-Dec-31.83566859)
5.8829e-05 TDB
node 65.65878852822927 2.2602e-05 deg
peri 182.3423164074828 2.7441e-05 deg
i 10.33367691195199 3.8729e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1472  
   data-arc span      24307 days (66.55 yr)  
   first obs. used      1953-10-10  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49166  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:09:13  

Additional Information
 Jupiter MOID = 2.33699 au 
 T_jup = 3.519 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.197181774932591E-15 -2.843981260244678E-15 -8.517062429420144E-14 -8.680552427263931E-15 5.677080952391014E-15 7.055814220374229E-16
q -2.843981260244678E-15 6.810545223156813E-15 3.239070323897421E-13 1.954763047101591E-14 2.319945663318384E-14 -1.466484892397528E-15
tp -8.517062429420144E-14 3.239070323897421E-13 3.460825892168793E-9 -8.171171110077772E-12 9.30371004388161E-10 3.886465293411229E-13
node -8.680552427263931E-15 1.954763047101591E-14 -8.171171110077772E-12 5.108521074456663E-10 -5.0463348029672E-10 7.390293239687162E-12
peri 5.677080952391014E-15 2.319945663318384E-14 9.30371004388161E-10 -5.0463348029672E-10 7.529986032378777E-10 -7.140571097230413E-12
i 7.055814220374229E-16 -1.466484892397528E-15 3.886465293411229E-13 7.390293239687162E-12 -7.140571097230413E-12 1.499959847092849E-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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