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18618 (1998 DD10)
Classification: Main-belt Asteroid          SPK-ID: 2018618
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .045601682134122 3.1838e-08  
a 2.232022084166613 7.772e-09 au
q 2.130238122568107 7.1992e-08 au
i 5.639084829837896 3.5267e-06 deg
node 265.2760586760387 4.0395e-05 deg
peri 184.6902209005996 6.6043e-05 deg
M 309.1348316309316 5.4279e-05 deg
tp 2459172.593371686605
(2020-Nov-19.09337169)
0.00018409 TDB
period 1217.996829532805
3.33
6.3617e-06
1.742e-08
d
yr
n .2955672718278647 1.5438e-09 deg/d
Q 2.33380604576512 8.1264e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1779  
   data-arc span      12183 days (33.36 yr)  
   first obs. used      1986-09-08  
   last obs. used      2020-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4834  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:29:35  

Additional Information
 Earth MOID = 1.14674 au 
 Jupiter MOID = 2.75437 au 
 T_jup = 3.633 
[ 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 14.1   n/a MPO502310  

18618 (1998 DD10)          Discovered 1998-Feb-22 by JPL/GEODSS NEAT at Haleakala
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 DD10 = 1986 RA10 = 1996 TK56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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