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129235 (2005 PS18)
Classification: Main-belt Asteroid          SPK-ID: 2129235
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1406527722784635 3.91e-08  
a 2.319651831859732 9.9401e-09 au
q 1.993386370987844 9.3531e-08 au
i 3.153991157843279 4.122e-06 deg
node 212.7076287023238 7.4135e-05 deg
peri 190.5383085661748 7.5635e-05 deg
M 4.384825641301235 1.4204e-05 deg
tp 2458984.782536468788
(2020-May-15.28253647)
5.09e-05 TDB
period 1290.424599313647
3.53
8.2945e-06
2.271e-08
d
yr
n .2789779427573508 1.7932e-09 deg/d
Q 2.64591729273162 1.1338e-08 au
  Orbit Determination Parameters
   # obs. used (total)      498  
   data-arc span      10268 days (28.11 yr)  
   first obs. used      1991-09-14  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50906  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 15:15:55  

Additional Information
 Earth MOID = 1.00216 au 
 Jupiter MOID = 2.73098 au 
 T_jup = 3.563 
[ 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 16.7   n/a MPO449741  

129235 (2005 PS18)          Discovered 2005-Aug-15 by Pla D'Arguines at Pla D'Arguines
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 2005 PS18 = 2004 HZ22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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