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344880 (2004 PW21)
Classification: Main-belt Asteroid          SPK-ID: 2344880
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1683244219431893 6.8133e-08  
a 2.406136987356622 1.7762e-08 au
q 2.001125369843692 1.7025e-07 au
i 6.322645448219508 7.8237e-06 deg
node 123.6051870794992 5.4333e-05 deg
peri 245.8129387488348 5.871e-05 deg
M 46.44842328895481 2.0441e-05 deg
tp 2458824.607457693453
(2019-Dec-07.10745769)
7.7189e-05 TDB
period 1363.26081159819
3.73
1.5095e-05
4.133e-08
d
yr
n .2640727269039308 2.924e-09 deg/d
Q 2.811148604869553 2.0751e-08 au
  Orbit Determination Parameters
   # obs. used (total)      200  
   data-arc span      5564 days (15.23 yr)  
   first obs. used      2004-08-08  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62127  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 22:57:25  

Additional Information
 Earth MOID = 1.00979 au 
 Jupiter MOID = 2.66594 au 
 T_jup = 3.495 
[ 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 17.0   n/a MPO503388  

344880 (2004 PW21)          Discovered 2004-Aug-08 by NEAT at Palomar
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

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