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74470 (1999 CH55)
Classification: Main-belt Asteroid          SPK-ID: 2074470
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09946615392494521 4.0994e-08  
a 3.134620618257467 2.1451e-08 au
q 2.822831961345563 1.3145e-07 au
i 6.135831633374279 4.6915e-06 deg
node 58.62872072530842 4.2173e-05 deg
peri 187.1331961841672 4.8353e-05 deg
M 227.8456125002297 2.503e-05 deg
tp 2459744.640584596705
(2022-Jun-14.14058460)
0.00014322 TDB
period 2027.103416867484
5.55
2.0808e-05
5.697e-08
d
yr
n .1775933072799581 1.823e-09 deg/d
Q 3.446409275169371 2.3585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1381  
   data-arc span      10541 days (28.86 yr)  
   first obs. used      1991-12-14  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53224  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:43:32  

Additional Information
 Earth MOID = 1.8096 au 
 Jupiter MOID = 1.56799 au 
 T_jup = 3.196 
[ 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 13.7   n/a MPO337819  
diameter diameter 9.132 km 0.212 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.084   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74470 (1999 CH55)          Discovered 1999-Feb-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CH55 = 1991 XB7 = 2001 RA105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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