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101621 (1999 CH16)
Classification: Main-belt Asteroid          SPK-ID: 2101621
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2181729035961938 6.6764e-08  
a 2.536752130871346 9.7003e-09 au
q 1.983301552775312 1.7063e-07 au
i 3.507133004041329 6.7681e-06 deg
node 321.0188694200859 7.0153e-05 deg
peri 152.9592337327696 7.085e-05 deg
M 111.9607590118938 1.1729e-05 deg
tp 2458541.535800267273
(2019-Feb-27.03580027)
4.6221e-05 TDB
period 1475.759126340233
4.04
8.4647e-06
2.318e-08
d
yr
n .2439422488226597 1.3992e-09 deg/d
Q 3.090202708967379 1.1817e-08 au
  Orbit Determination Parameters
   # obs. used (total)      665  
   data-arc span      9266 days (25.37 yr)  
   first obs. used      1995-03-02  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52823  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:29  

Additional Information
 Earth MOID = 1.00049 au 
 Jupiter MOID = 2.02273 au 
 T_jup = 3.411 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO270553  

101621 (1999 CH16)          Discovered 1999-Feb-15 by Klet at Klet
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 CH16 = 1995 EZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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