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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566444827826989 5.0232e-08  
a 3.107942988303015 1.9207e-08 au
q 2.621100866382174 1.566e-07 au
i 4.060738020998984 5.597e-06 deg
node 165.5167989998776 6.6918e-05 deg
peri 239.6952053287398 6.8819e-05 deg
M 327.4655398729323 1.4244e-05 deg
tp 2458781.362735833948
(2019-Oct-24.86273583)
7.9145e-05 TDB
period 2001.28063124217
5.48
1.8552e-05
5.079e-08
d
yr
n .1798848169417162 1.6676e-09 deg/d
Q 3.594785110223857 2.2216e-08 au
  Orbit Determination Parameters
   # obs. used (total)      739  
   data-arc span      7597 days (20.80 yr)  
   first obs. used      1999-02-09  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51816  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:47:49  

Additional Information
 Earth MOID = 1.63271 au 
 Jupiter MOID = 1.81394 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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