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8512 (1991 PC11)
Classification: Main-belt Asteroid          SPK-ID: 2008512
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .163113159729655 3.2026e-08  
a 2.663303336506895 1.0808e-08 au
q 2.228883513970723 8.6261e-08 au
i 7.198492975781313 4.8612e-06 deg
node 146.055617996621 2.5316e-05 deg
peri 248.2824187139852 2.9236e-05 deg
M 176.4049751550075 1.5163e-05 deg
tp 2458222.575041754375
(2018-Apr-14.07504175)
6.5612e-05 TDB
period 1587.557180415924
4.35
9.6635e-06
2.646e-08
d
yr
n .2267634857131153 1.3803e-09 deg/d
Q 3.097723159043067 1.2571e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2216  
   data-arc span      11265 days (30.84 yr)  
   first obs. used      1989-03-05  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .494  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 21:16:42  

Additional Information
 Earth MOID = 1.24676 au 
 Jupiter MOID = 2.37018 au 
 T_jup = 3.354 
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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 13.0   n/a MPO337328  
diameter diameter 15.027 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.064   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

8512 (1991 PC11)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar
Reference: 19980313/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 PC11 = 1989 ES10 = 1996 XT32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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