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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1682820003536852 6.8159e-08  
a 2.406263509706065 1.7851e-08 au
q 2.001332672914649 1.7031e-07 au
i 6.32218571161637 7.823e-06 deg
node 123.6066627820185 5.434e-05 deg
peri 245.7264419644735 5.8712e-05 deg
M 300.8849195784066 2.0315e-05 deg
tp 2458824.376747383022
(2019-Dec-06.87674738)
7.7147e-05 TDB
period 1363.368339907529
3.73
1.5171e-05
4.154e-08
d
yr
n .2640518995948059 2.9383e-09 deg/d
Q 2.81119434649748 2.0855e-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 = 1.00912 au 
 Jupiter MOID = 2.66224 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 16.9   n/a MPO440552  

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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