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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 .1645264825690164 3.6871e-08  
a 2.593453647316414 1.8165e-08 au
q 2.166761841017658 9.6298e-08 au
i 18.49932282986867 4.5053e-06 deg
node 121.8009138072847 1.3511e-05 deg
peri 122.1570655409198 2.1732e-05 deg
M 197.89593006748 2.0066e-05 deg
tp 2459687.422244488795
(2022-Apr-17.92224449)
8.9559e-05 TDB
period 1525.513875863251
4.18
1.6027e-05
4.388e-08
d
yr
n .2359860540739328 2.4793e-09 deg/d
Q 3.020145453615171 2.1153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      408  
   data-arc span      7118 days (19.49 yr)  
   first obs. used      2001-04-27  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53821  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:14:57  

Additional Information
 Earth MOID = 1.2052 au 
 Jupiter MOID = 2.24995 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2142-Aug-17 11:06 00:03 Ceres 0.0223220262512825 0.0222548297717351 0.0223893431654086 5.09123057246372 5.09122685509668 2503637.962357779 3.03151850089294 4212.54562721648 92.9338483084504 -37.6459375118096 21838.5586371663 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 00:14:59 2020-Nov-12 00:14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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