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16939 (1998 FP121)
Classification: Main-belt Asteroid          SPK-ID: 2016939
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02870801102074526 3.2573e-08  
a 2.781900441049243 1.1093e-08 au
q 2.702037612528986 9.2963e-08 au
i 5.641672630072839 3.5343e-06 deg
node 181.5432235648276 3.4427e-05 deg
peri 326.0860897535136 7.1429e-05 deg
M 1.997760505747918 6.1487e-05 deg
tp 2459191.095153225594
(2020-Dec-07.59515323)
0.00028947 TDB
period 1694.770133379182
4.64
1.0137e-05
2.775e-08
d
yr
n .2124181875226938 1.2705e-09 deg/d
Q 2.861763269569501 1.1411e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2234  
   data-arc span      9340 days (25.57 yr)  
   first obs. used      1995-08-19  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48579  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:47:23  

Additional Information
 Earth MOID = 1.71353 au 
 Jupiter MOID = 2.11205 au 
 T_jup = 3.325 
[ 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 13.71   n/a E2021B10  

16939 (1998 FP121)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FP121 = 1999 NE47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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