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16938 (1998 FN121)
Classification: Main-belt Asteroid          SPK-ID: 2016938
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1435080075008014 2.8923e-08  
a 2.766932686772795 9.8293e-09 au
q 2.369855690005192 7.9956e-08 au
i 9.222393732030847 3.5307e-06 deg
node 172.7332661288973 1.9723e-05 deg
peri 260.7781889503005 2.394e-05 deg
M 76.34570725436491 1.2123e-05 deg
tp 2458843.984480757176
(2019-Dec-26.48448076)		 5.671e-05 TDB
period 1681.110720473137
4.60		 8.958e-06
2.453e-08		 d
yr
n .2141441343605735 1.1411e-09 deg/d
Q 3.164009683540397 1.124e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2071  
   data-arc span      10755 days (29.45 yr)  
   first obs. used      1991-10-04  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47906  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:47:22  

Additional Information
 Earth MOID = 1.40496 au 
 Jupiter MOID = 2.17549 au 
 T_jup = 3.305 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.68   n/a E2021B10  

16938 (1998 FN121)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FN121 = 1999 NC44 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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