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JPL Small-Body Database Browser
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74539 (1999 JD15)
Classification: Mars-crossing Asteroid          SPK-ID: 2074539
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2920388179601134 3.2673e-08  
a 2.352666198889795 1.3336e-08 au
q 1.665596343111306 7.8621e-08 au
i 22.60618492602119 7.5537e-06 deg
node 86.27847127000366 1.2128e-05 deg
peri 247.1593951881719 1.8791e-05 deg
M 130.3549747035247 1.5264e-05 deg
tp 2458123.230144330349
(2018-Jan-04.73014433)
5.4616e-05 TDB
period 1318.071277539274
3.61
1.1207e-05
3.068e-08
d
yr
n .2731263522198049 2.3223e-09 deg/d
Q 3.039736054668285 1.7231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      894  
   data-arc span      16283 days (44.58 yr)  
   first obs. used      1974-06-17  
   last obs. used      2019-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53821  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:19:32  

Additional Information
 Earth MOID = .766041 au 
 Jupiter MOID = 2.53991 au 
 T_jup = 3.399 
[ 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 14.9   n/a MPO417340  
diameter diameter 2.175 km 0.451 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.409   0.191 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

74539 (1999 JD15)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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