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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457278.5 (2015-Sep-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .233042014151982 3.1475e-08  
q 1.992689137522482 8.1241e-08 au
tp 2457167.003497961197
(2015-May-24.50349796)
5.0121e-05 TDB
node 127.8947079240558 4.7524e-05 deg
peri 7.447530008722258 4.9057e-05 deg
i 6.165240338035956 3.7751e-06 deg
  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
 Jupiter MOID = 1.84402 au 
 T_jup = 3.369 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.906507465116081E-16 -2.543410304174067E-15 -6.868578728010156E-15 -1.597385375408905E-15 -2.155391924835743E-14 -5.316603419390475E-17
q -2.543410304174067E-15 6.60005312927262E-15 2.152079055199091E-13 4.489210168839546E-15 1.05397126355586E-13 -1.765971268968217E-16
tp -6.868578728010156E-15 2.152079055199091E-13 2.512129606582358E-9 2.404128630468348E-12 6.438241281832435E-10 -3.651428767152553E-12
node -1.597385375408905E-15 4.489210168839546E-15 2.404128630468348E-12 2.258497875746317E-9 -2.244425827346721E-9 -2.277865049242486E-11
peri -2.155391924835743E-14 1.05397126355586E-13 6.438241281832435E-10 -2.244425827346721E-9 2.40659298158233E-9 2.17310456799947E-11
i -5.316603419390475E-17 -1.765971268968217E-16 -3.651428767152553E-12 -2.277865049242486E-11 2.17310456799947E-11 1.425100921829653E-11

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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