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249829 (2001 LH18)
Classification: Main-belt Asteroid          SPK-ID: 2249829
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1648259067604094 3.7972e-08  
a 2.592645456078677 1.8366e-08 au
q 2.165310317872254 9.8685e-08 au
i 18.49890775331225 4.6063e-06 deg
node 121.8081226944549 1.3948e-05 deg
peri 122.0759250659582 2.2093e-05 deg
M 103.5629409006293 1.958e-05 deg
tp 2458161.853167659710
(2018-Feb-12.35316766)
8.0406e-05 TDB
period 1524.800843518192
4.17
1.6202e-05
4.436e-08
d
yr
n .2360964066424357 2.5087e-09 deg/d
Q 3.0199805942851 2.1393e-08 au
  Orbit Determination Parameters
   # obs. used (total)      386  
   data-arc span      6789 days (18.59 yr)  
   first obs. used      2001-04-27  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52246  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 16:45:29  

Additional Information
 Earth MOID = 1.20356 au 
 Jupiter MOID = 2.24943 au 
 T_jup = 3.327 
[ 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 15.8   n/a MPO418334  
diameter diameter 2.997 km 0.697 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.136   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249829 (2001 LH18)          Discovered 2001-Jun-13 by LONEOS at Anderson Mesa
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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