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JPL Small-Body Database Browser
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66276 (1999 JG9)
Classification: Main-belt Asteroid          SPK-ID: 2066276
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1848157786915366 3.2795e-08  
a 2.35685021911022 1.0899e-08 au
q 1.921267110606046 7.7745e-08 au
i 7.580940451981657 4.4515e-06 deg
node 135.3212168819417 3.5182e-05 deg
peri 141.3823859298997 3.8542e-05 deg
M 258.7481068933387 1.6842e-05 deg
tp 2459372.203844684833
(2021-Jun-06.70384468)
6.3294e-05 TDB
period 1321.58895977952
3.62
9.1676e-06
2.51e-08
d
yr
n .2723993699675417 1.8896e-09 deg/d
Q 2.792433327614394 1.2914e-08 au
  Orbit Determination Parameters
   # obs. used (total)      620  
   data-arc span      7550 days (20.67 yr)  
   first obs. used      1999-05-07  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 10:48:11  

Additional Information
 Earth MOID = .911552 au 
 Jupiter MOID = 2.36068 au 
 T_jup = 3.519 
[ 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 15.9   n/a MPO412596  
diameter diameter 3.396 km 0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66276 (1999 JG9)          Discovered 1999-May-07 by CSS at Catalina
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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