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18615 (1998 DJ5)
Classification: Main-belt Asteroid          SPK-ID: 2018615
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1663659401610088 3.7038e-08  
a 2.570835760750392 1.1447e-08 au
q 2.143136252413611 9.6133e-08 au
i 12.99317741150628 3.9365e-06 deg
node 114.0463612618626 2.2251e-05 deg
peri 187.8797700451648 2.6948e-05 deg
M .1459379197627532 1.5928e-05 deg
tp 2458999.889654740071
(2020-May-30.38965474)
6.6614e-05 TDB
period 1505.601107181118
4.12
1.0056e-05
2.753e-08
d
yr
n .2391071567913594 1.597e-09 deg/d
Q 2.998535269087173 1.3351e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2076  
   data-arc span      10561 days (28.91 yr)  
   first obs. used      1991-07-18  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45724  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:24:03  

Additional Information
 Earth MOID = 1.12821 au 
 Jupiter MOID = 2.2339 au 
 T_jup = 3.375 
[ 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 13.2   n/a MPO384913  
diameter diameter 6.839 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.198   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18615 (1998 DJ5)          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 DJ5 = 1991 OF1 = 1999 LY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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