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8514 (1991 PK15)
Classification: Main-belt Asteroid          SPK-ID: 2008514
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2336435037027892 8.4585e-08  
a 2.581291412953408 1.7526e-08 AU
q 1.97818944315305 2.1496e-07 AU
i 3.906962571419962 7.4528e-06 deg
node 320.8033067479971 0.00010402 deg
peri 19.80080461628349 0.00010465 deg
M 171.1284744450173 2.0622e-05 deg
tp 2456080.431587699961
(2012-Jun-01.93158770)
8.3897e-05 JED
period 1514.795414782368
4.15
1.5427e-05
4.224e-08
d
yr
n .2376558553629643 2.4204e-09 deg/d
Q 3.184393382753766 2.1621e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      834  
   data-arc span      21667 days (59.32 yr)  
   first obs. used      1954-11-23  
   last obs. used      2014-03-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60374  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:54:40  

Additional Information
 Earth MOID = .96887 AU 
 T_jup = 3.382 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO256927  

8514 (1991 PK15)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675)
Reference: 19980313/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PK15 = 1987 UE2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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