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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07781067693897835 4.4017e-08  
a 2.383591553742118 1.0467e-08 au
q 2.198122681399413 1.0661e-07 au
i 13.82579533530097 5.7834e-06 deg
node 343.7912155471071 1.4993e-05 deg
peri 138.9969895300745 3.5381e-05 deg
M 288.019312696946 3.2201e-05 deg
tp 2459269.256930312469
(2021-Feb-23.75693031)
0.00012071 TDB
period 1344.14519418438
3.68
8.8541e-06
2.424e-08
d
yr
n .2678282090041962 1.7642e-09 deg/d
Q 2.569060426084823 1.1282e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1320  
   data-arc span      7956 days (21.78 yr)  
   first obs. used      1999-01-19  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50265  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:28  

Additional Information
 Earth MOID = 1.22676 au 
 Jupiter MOID = 2.46421 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 14.4   n/a MPO344990  
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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