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100221 (1994 PP12)
Classification: Main-belt Asteroid          SPK-ID: 2100221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04525956650547474 5.2763e-08  
a 2.51912299641479 1.3944e-08 au
q 2.405108581623084 1.3305e-07 au
i 1.993396746774163 5.1424e-06 deg
node 204.5478992106696 0.0001347 deg
peri 122.9585532902896 0.00014363 deg
M 167.9514469500801 4.8506e-05 deg
tp 2458319.175926058871
(2018-Jul-19.67592606)
0.00019603 TDB
period 1460.402223814776
4.00
1.2126e-05
3.32e-08
d
yr
n .2465074307129096 2.0468e-09 deg/d
Q 2.633137411206496 1.4575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      650  
   data-arc span      9408 days (25.76 yr)  
   first obs. used      1994-08-10  
   last obs. used      2020-05-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55162  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:07:23  

Additional Information
 Earth MOID = 1.39404 au 
 Jupiter MOID = 2.4992 au 
 T_jup = 3.455 
[ 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 15.7   n/a MPO453456  

100221 (1994 PP12)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1994 PP12 = 2001 HS43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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