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18218 (6245 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2018218
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08761870654979755 4.3822e-08  
a 2.603295948167181 1.2056e-08 au
q 2.375198524422444 1.1914e-07 au
i 13.02948800372852 4.2339e-06 deg
node 193.3510237553415 1.5939e-05 deg
peri 15.69983534205896 2.8649e-05 deg
M 314.3980034959201 2.7081e-05 deg
tp 2459590.841296951187
(2022-Jan-11.34129695)
0.00011603 TDB
period 1534.206224856141
4.20
1.0658e-05
2.918e-08
d
yr
n .2346490283819285 1.63e-09 deg/d
Q 2.831393371911918 1.3113e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      25487 days (69.78 yr)  
   first obs. used      1951-07-31  
   last obs. used      2021-05-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50952  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:59:15  

Additional Information
 Earth MOID = 1.37447 au 
 Jupiter MOID = 2.12621 au 
 T_jup = 3.372 
[ 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 14.36   n/a MPCxxxxx  
diameter diameter 3.984 km 0.210 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.232   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18218 (6245 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 6245 P-L = 1992 CJ5 = 3414 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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