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146721 (2001 XF8)
Classification: Main-belt Asteroid          SPK-ID: 2146721
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .198919563503744 3.7142e-08  
a 3.149227887966326 2.0413e-08 au
q 2.522784851118247 1.1554e-07 au
i 2.471316842093073 3.7645e-06 deg
node 100.8355625990369 0.00011263 deg
peri 326.2535015452484 0.00011327 deg
M 118.1195336313016 1.2416e-05 deg
tp 2458330.732942882667
(2018-Jul-31.23294288)
6.7359e-05 TDB
period 2041.289303722276
5.59
1.9847e-05
5.434e-08
d
yr
n .1763591272160897 1.7147e-09 deg/d
Q 3.775670924814404 2.4473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      629  
   data-arc span      8478 days (23.21 yr)  
   first obs. used      1997-02-08  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 23:56:23  

Additional Information
 Earth MOID = 1.53721 au 
 Jupiter MOID = 1.54158 au 
 T_jup = 3.176 
[ 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 15.1   n/a MPO432921  

146721 (2001 XF8)          Discovered 2001-Dec-08 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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