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391496 (2007 PG9)
Classification: Main-belt Asteroid          SPK-ID: 2391496
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2671851822660254 4.0005e-08  
a 2.442788198156105 2.3445e-08 au
q 1.790111388194471 1.0169e-07 au
i 11.40670175517696 7.2986e-06 deg
node 27.48910225266328 2.2006e-05 deg
peri 292.1220030922484 2.8818e-05 deg
M 131.8891730893591 2.2474e-05 deg
tp 2458489.602483995103
(2019-Jan-06.10248400)
8.135e-05 TDB
period 1394.527704235049
3.82
2.0077e-05
5.497e-08
d
yr
n .2581519168867812 3.7165e-09 deg/d
Q 3.09546500811774 2.971e-08 au
  Orbit Determination Parameters
   # obs. used (total)      390  
   data-arc span      4552 days (12.46 yr)  
   first obs. used      2007-07-18  
   last obs. used      2020-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53136  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 09:57:55  

Additional Information
 Earth MOID = .815206 au 
 Jupiter MOID = 2.35218 au 
 T_jup = 3.425 
[ 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 16.3   n/a MPO455781  
diameter diameter 2.987 km 0.815 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.041   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

391496 (2007 PG9)          Discovered 2007-Aug-11 by Luckas, P. at Shenton Park
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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