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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1406778036575788 3.4384e-08  
a 2.355503180684402 8.6126e-09 au
q 2.024136166717279 8.2067e-08 au
i 10.33484345419598 3.8065e-06 deg
node 65.62604257831785 2.2576e-05 deg
peri 182.4030190854399 2.7417e-05 deg
M 332.9248164689037 1.752e-05 deg
tp 2459299.809976203039
(2021-Mar-26.30997620)
6.4525e-05 TDB
period 1320.456106679119
3.62
7.2421e-06
1.983e-08
d
yr
n .2726330683610392 1.4953e-09 deg/d
Q 2.686870194651525 9.8242e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1516  
   data-arc span      24572 days (67.27 yr)  
   first obs. used      1953-10-10  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4925  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:11:58  

Additional Information
 Earth MOID = 1.00896 au 
 Jupiter MOID = 2.33659 au 
 T_jup = 3.520 
[ 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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