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74500 (1999 CQ146)
Classification: Main-belt Asteroid          SPK-ID: 2074500
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1569842899336212 5.0026e-08  
a 3.10912235547667 1.8754e-08 au
q 2.621038990185417 1.5566e-07 au
i 4.060450518785079 5.2326e-06 deg
node 165.5069318075457 6.6848e-05 deg
peri 239.6655562637246 6.8682e-05 deg
M 39.424940320319 1.3601e-05 deg
tp 2458781.207544318120
(2019-Oct-24.70754432)
7.5786e-05 TDB
period 2002.419874426284
5.48
1.8118e-05
4.96e-08
d
yr
n .1797824744938391 1.6267e-09 deg/d
Q 3.597205720767922 2.1698e-08 au
  Orbit Determination Parameters
   # obs. used (total)      798  
   data-arc span      7657 days (20.96 yr)  
   first obs. used      1999-02-09  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:17:28  

Additional Information
 Earth MOID = 1.63317 au 
 Jupiter MOID = 1.81308 au 
 T_jup = 3.197 
[ 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 14.8   n/a MPO412635  
diameter diameter 4.995 km 1.979 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.093   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74500 (1999 CQ146)          Discovered 1999-Feb-09 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CQ146 = 2000 HJ17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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