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101623 (1999 CH18)
Classification: Main-belt Asteroid          SPK-ID: 2101623
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07789851622203618 4.2396e-08  
a 2.384054626464116 8.6748e-09 au
q 2.198340308470281 1.0408e-07 au
i 13.82568793957209 3.6836e-06 deg
node 343.7871174989105 1.3875e-05 deg
peri 138.8795473381102 2.8189e-05 deg
M 341.6942859390936 2.2269e-05 deg
tp 2459268.868634160746
(2021-Feb-23.36863416)		 8.3085e-05 TDB
period 1344.536914319626
3.68		 7.3385e-06
2.009e-08		 d
yr
n .267750179385867 1.4614e-09 deg/d
Q 2.569768944457952 9.3505e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1714  
   data-arc span      8090 days (22.15 yr)  
   first obs. used      1999-01-19  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45806  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:42  

Additional Information
 Earth MOID = 1.22698 au 
 Jupiter MOID = 2.46306 au 
 T_jup = 3.493 
[ 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 14.50   n/a E2021B55  
diameter diameter 5.610 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.105   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101623 (1999 CH18)          Discovered 1999-Feb-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 CH18 = 2001 QX81 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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