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74478 (1999 CH68)
Classification: Main-belt Asteroid          SPK-ID: 2074478
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1345025735511361 4.5543e-08  
a 3.189600813357056 2.5969e-08 au
q 2.760591295359735 1.4849e-07 au
i 5.402942046151131 5.2415e-06 deg
node 316.5372254711991 4.4946e-05 deg
peri 176.8660135467539 4.7879e-05 deg
M 271.6653145778135 1.6895e-05 deg
tp 2459511.042255825923
(2021-Oct-23.54225583)
0.00010033 TDB
period 2080.668666208548
5.70
2.5411e-05
6.957e-08
d
yr
n .1730213012031378 2.1131e-09 deg/d
Q 3.618610331354377 2.9462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      7587 days (20.77 yr)  
   first obs. used      1999-01-13  
   last obs. used      2019-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52267  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:53:47  

Additional Information
 Earth MOID = 1.77489 au 
 Jupiter MOID = 1.42879 au 
 T_jup = 3.176 
[ 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 14.2   n/a MPO493390  
diameter diameter 7.345 km 0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.090   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74478 (1999 CH68)          Discovered 1999-Feb-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CH68 = 2002 RH58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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