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74442 (1999 CJ9)
Classification: Main-belt Asteroid          SPK-ID: 2074442
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1705285140198619 3.897e-08  
a 3.147332878532913 2.1277e-08 au
q 2.610622879630841 1.2533e-07 au
i 1.610500201603735 4.6941e-06 deg
node 55.6443236378154 0.00015955 deg
peri 84.93938119064583 0.00016026 deg
M 224.2234199989135 1.5822e-05 deg
tp 2459369.692089638002
(2021-Jun-04.19208964)
9.3698e-05 TDB
period 2039.447099547396
5.58
2.0681e-05
5.662e-08
d
yr
n .1765184299606952 1.79e-09 deg/d
Q 3.684042877434985 2.4905e-08 au
  Orbit Determination Parameters
   # obs. used (total)      854  
   data-arc span      8086 days (22.14 yr)  
   first obs. used      1997-09-07  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51214  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:53:20  

Additional Information
 Earth MOID = 1.62477 au 
 Jupiter MOID = 1.34357 au 
 T_jup = 3.185 
[ 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 14.5   n/a MPO453157  
diameter diameter 6.142 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74442 (1999 CJ9)          Discovered 1999-Feb-08 by Kawasato, N. at Uenohara
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CJ9 = 2000 KT21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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