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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .140805755354331 3.3825e-08  
a 2.355852092746776 8.0673e-09 au
q 2.024134559324485 8.0308e-08 au
i 10.33418639053376 3.7939e-06 deg
node 65.62438917423894 2.2191e-05 deg
peri 182.4493963314839 2.6706e-05 deg
M 26.3210996193924 1.6486e-05 deg
tp 2459299.934501667726
(2021-Mar-26.43450167)
6.0279e-05 TDB
period 1320.749509036704
3.62
6.7841e-06
1.857e-08
d
yr
n .2725725033678552 1.4001e-09 deg/d
Q 2.687569626169067 9.2032e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1569  
   data-arc span      24727 days (67.70 yr)  
   first obs. used      1953-10-10  
   last obs. used      2021-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48656  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 07:37:42  

Additional Information
 Earth MOID = 1.01071 au 
 Jupiter MOID = 2.33481 au 
 T_jup = 3.519 
[ show covariance matrix ]

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)  
rotation period rot_per 20.2537 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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