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JPL Small-Body Database Browser
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20476 Chanarich (1999 NH12)
Classification: Main-belt Asteroid          SPK-ID: 2020476
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1445747511658486 3.9671e-08  
a 2.206042568117158 6.8833e-09 au
q 1.88710451277035 8.746e-08 au
i 2.694259021818369 4.2939e-06 deg
node 184.0078132082884 7.1008e-05 deg
peri 11.78736371118312 7.1848e-05 deg
M 111.3962912145959 1.1136e-05 deg
tp 2458230.171197743769
(2018-Apr-21.67119774)
3.6671e-05 TDB
period 1196.793603796163
3.28
5.6013e-06
1.534e-08
d
yr
n .3008037466594908 1.4078e-09 deg/d
Q 2.524980623463966 7.8784e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1207  
   data-arc span      21560 days (59.03 yr)  
   first obs. used      1960-10-17  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51373  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:23:27  

Additional Information
 Earth MOID = .886195 au 
 Jupiter MOID = 2.43159 au 
 T_jup = 3.646 
[ 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 15.4   n/a MPO344464  

20476 Chanarich           Discovered 1999 July 13 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Chana Leora Rich (b. 1990) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her environmental sciences project. She attends the Hillel Academy, Fairfield, Connecticut.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 NH12 = 1997 YF21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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