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18369 (1991 LM)
Classification: Main-belt Asteroid          SPK-ID: 2018369
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .087896741820906 4.3227e-08  
a 2.570186129359987 1.2093e-08 au
q 2.344275142715959 1.118e-07 au
i 16.54940707714096 4.7084e-06 deg
node 103.3801854565681 1.6104e-05 deg
peri 193.3606265225373 3.1842e-05 deg
M 341.4123370219216 2.9251e-05 deg
tp 2459078.208330536096
(2020-Aug-16.70833054)
0.0001224 TDB
period 1505.030461655525
4.12
1.0622e-05
2.908e-08
d
yr
n .2391978163711066 1.6882e-09 deg/d
Q 2.796097116004016 1.3156e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      10195 days (27.91 yr)  
   first obs. used      1991-06-13  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4518  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:35:58  

Additional Information
 Earth MOID = 1.33025 au 
 Jupiter MOID = 2.3816 au 
 T_jup = 3.367 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO474009  
diameter diameter 7.030 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.297   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18369 (1991 LM)          Discovered 1991-Jun-13 by Helin, E. F. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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