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21354 (1997 FM)
Classification: Main-belt Asteroid          SPK-ID: 2021354
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1339323550529118 7.0153e-08  
a 2.685464256169855 2.8616e-08 AU
q 2.32579370393061 1.9258e-07 AU
i 13.70674927706238 8.0231e-06 deg
node 119.8787931635263 2.8912e-05 deg
peri 162.1392542550554 4.164e-05 deg
M 307.4269435141758 3.4496e-05 deg
tp 2457235.240603711096
(2015-Jul-31.74060371)
0.00015616 JED
period 1607.413054989125
4.40
2.5693e-05
7.034e-08
d
yr
n .2239623467550073 3.5798e-09 deg/d
Q 3.0451348084091 3.2449e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      730  
   data-arc span      6604 days (18.08 yr)  
   first obs. used      1997-03-21  
   last obs. used      2015-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5884  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:39:24  

Additional Information
 Earth MOID = 1.31425 AU 
 T_jup = 3.321 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a MPO259495  

21354 (1997 FM)          Discovered 1997-Mar-21 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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