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181053 (2005 PH9)
Classification: Main-belt Asteroid          SPK-ID: 2181053
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1645429503893378 6.3397e-08  
a 2.555298446112636 1.9221e-08 au
q 2.134842100663973 1.6545e-07 au
i 3.485048120481895 6.8796e-06 deg
node 141.5185399931335 8.3997e-05 deg
peri 149.4522254912956 8.5681e-05 deg
M 296.4596458704 2.1547e-05 deg
tp 2459463.834647156582
(2021-Sep-06.33464716)
9.1292e-05 TDB
period 1491.972688458897
4.08
1.6834e-05
4.609e-08
d
yr
n .2412912801854668 2.7224e-09 deg/d
Q 2.975754791561299 2.2383e-08 au
  Orbit Determination Parameters
   # obs. used (total)      211  
   data-arc span      10012 days (27.41 yr)  
   first obs. used      1993-09-15  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5865  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:01  

Additional Information
 Earth MOID = 1.11758 au 
 Jupiter MOID = 2.20407 au 
 T_jup = 3.416 
[ 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 16.69   n/a MPCxxxxx  

181053 (2005 PH9)          Discovered 2005-Aug-04 by NEAT at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

Alternate Designations
 2005 PH9 = 2001 SW329 = 2004 EL98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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