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56246 (1999 JK72)
Classification: Main-belt Asteroid          SPK-ID: 2056246
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2320346762429505 3.15e-08  
a 2.598127045029535 1.0978e-08 au
q 1.995271477298053 8.1136e-08 au
i 6.164176236202652 3.7742e-06 deg
node 127.8759294539733 4.7532e-05 deg
peri 7.378209378859643 4.9079e-05 deg
M 71.63398574126246 1.3365e-05 deg
tp 2458696.127355394417
(2019-Jul-31.62735539)
5.5611e-05 TDB
period 1529.639191846522
4.19
9.6948e-06
2.654e-08
d
yr
n .2353496183406636 1.4916e-09 deg/d
Q 3.200982612761017 1.3525e-08 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      8295 days (22.71 yr)  
   first obs. used      1997-10-29  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54669  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:00:12  

Additional Information
 Earth MOID = 1.00955 au 
 Jupiter MOID = 1.84402 au 
 T_jup = 3.369 
[ show covariance matrix ]

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 15.8   n/a MPO468453  
diameter diameter 4.235 km 1.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.052   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

56246 (1999 JK72)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JK72 = 2001 TE146 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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