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66399 (1999 LH)
Classification: Main-belt Asteroid          SPK-ID: 2066399
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2188933201899373 3.0372e-08  
a 2.329236559815536 7.1414e-09 au
q 1.819382235729726 7.191e-08 au
i 3.460877369531719 3.2918e-06 deg
node 111.0436871455265 6.4911e-05 deg
peri 191.1791505096081 6.5448e-05 deg
M 347.9232966844279 8.8276e-06 deg
tp 2459244.057678060345
(2021-Jan-29.55767806)
3.1908e-05 TDB
period 1298.430845900222
3.55
5.9714e-06
1.635e-08
d
yr
n .2772577385516488 1.2751e-09 deg/d
Q 2.839090883901346 8.7046e-09 au
  Orbit Determination Parameters
   # obs. used (total)      831  
   data-arc span      7723 days (21.14 yr)  
   first obs. used      1999-05-18  
   last obs. used      2020-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58015  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:21:52  

Additional Information
 Earth MOID = .802107 au 
 Jupiter MOID = 2.39645 au 
 T_jup = 3.537 
[ 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 16.26   n/a E2021B10  
diameter diameter 1.206 km 0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.305   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66399 (1999 LH)          Discovered 1999-Jun-05 by Cooney Jr., W. R., Hess, M. at Baton Rouge
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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