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66271 (1999 JM6)
Classification: Main-belt Asteroid          SPK-ID: 2066271
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1732312938904119 3.6543e-08  
a 2.348624635538873 1.0384e-08 au
q 1.941769351061577 8.8846e-08 au
i 11.96850847204662 4.3138e-06 deg
node 236.5788007715889 2.0412e-05 deg
peri 25.00747263760891 2.4766e-05 deg
M 333.0801432643929 1.5714e-05 deg
tp 2459298.808051529193
(2021-Mar-25.30805153)
5.775e-05 TDB
period 1314.676333462717
3.60
8.7189e-06
2.387e-08
d
yr
n .2738316579045721 1.8161e-09 deg/d
Q 2.755479920016169 1.2183e-08 au
  Orbit Determination Parameters
   # obs. used (total)      932  
   data-arc span      7704 days (21.09 yr)  
   first obs. used      1999-04-15  
   last obs. used      2020-05-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54604  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:44  

Additional Information
 Earth MOID = .931729 au 
 Jupiter MOID = 2.30938 au 
 T_jup = 3.510 
[ 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 15.36   n/a E2021B10  
diameter diameter 2.327 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.130   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66271 (1999 JM6)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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