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JPL Small-Body Database Browser
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66291 (1999 JM23)
Classification: Main-belt Asteroid          SPK-ID: 2066291
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1093750299849999 3.6291e-08  
a 2.266960636292832 9.0152e-09 au
q 2.019011748723489 8.4743e-08 au
i 7.01038250494191 5.6547e-06 deg
node 48.9989392970047 3.4975e-05 deg
peri 226.818127892449 4.5795e-05 deg
M 16.77269507308736 3.1549e-05 deg
tp 2458942.414899343035
(2020-Apr-02.91489934)
0.00010913 TDB
period 1246.706992846941
3.41
7.4368e-06
2.036e-08
d
yr
n .2887607128744142 1.7225e-09 deg/d
Q 2.514909523862176 1.0001e-08 au
  Orbit Determination Parameters
   # obs. used (total)      969  
   data-arc span      7357 days (20.14 yr)  
   first obs. used      1999-04-12  
   last obs. used      2019-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56418  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:54:35  

Additional Information
 Earth MOID = 1.0103 au 
 Jupiter MOID = 2.57196 au 
 T_jup = 3.598 
[ 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 15.3   n/a MPO436244  
diameter diameter 1.892 km 0.378 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.450   0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66291 (1999 JM23)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JM23 = 2000 SL274 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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