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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07781068083562871 4.3168e-08  
a 2.38359155542117 9.8257e-09 au
q 2.198122673659793 1.0522e-07 au
i 13.82579530873245 5.1185e-06 deg
node 343.7912154633932 1.4861e-05 deg
peri 138.996995668587 3.2752e-05 deg
M 288.0193059112638 2.86e-05 deg
tp 2459269.256955932396
(2021-Feb-23.75695593)
0.00010701 TDB
period 1344.145195604646
3.68
8.3113e-06
2.276e-08
d
yr
n .2678282087212006 1.6561e-09 deg/d
Q 2.569060437182547 1.059e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1353  
   data-arc span      7971 days (21.82 yr)  
   first obs. used      1999-01-19  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49804  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:29:29  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1950-Feb-02 01:30 < 00:01 Thisb 0.0111636876210252 0.0111557170026691 0.0111716590407721 5.76668485224442 5.76668474633347 2433314.562801590 0.48566361557739 424.770322626225 45.0872357783009 -20.8129404755572 13658.6370167632 T 30 CATAB v2.0f-lin.ifort 2020-Dec-17 22:29:32 2020-Dec-17 22:29

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