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21208 (1994 PW29)
Classification: Main-belt Asteroid          SPK-ID: 2021208
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1283314600815939 2.9593e-08  
a 2.933894046951128 1.482e-08 au
q 2.557383140181193 8.6199e-08 au
i 10.5423956219373 3.8857e-06 deg
node 183.6294295848832 1.9356e-05 deg
peri 211.9911545883693 2.5437e-05 deg
M 78.54816032246477 1.5747e-05 deg
tp 2458996.003631148026
(2020-May-26.50363115)
8.0964e-05 TDB
period 1835.545125370371
5.03
1.3908e-05
3.808e-08
d
yr
n .1961270224437333 1.4861e-09 deg/d
Q 3.310404953721063 1.6722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1395  
   data-arc span      9700 days (26.56 yr)  
   first obs. used      1994-08-12  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51711  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:31:28  

Additional Information
 Earth MOID = 1.56893 au 
 Jupiter MOID = 2.1577 au 
 T_jup = 3.238 
[ 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 14.24   n/a MPCxxxxx  

21208 (1994 PW29)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PW29 = 1997 GV26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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