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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2340819970029596 7.869e-08  
a 2.58040250330472 1.8417e-08 AU
q 1.976376732259715 1.9939e-07 AU
i 3.907166859267966 6.9799e-06 deg
node 320.8043792839889 9.9501e-05 deg
peri 19.79794121870684 0.00010016 deg
M 218.6860771169208 1.9325e-05 deg
tp 2457594.808662553708
(2016-Jul-25.30866255)
8.4328e-05 JED
period 1514.013015521157
4.15
1.6209e-05
4.438e-08
d
yr
n .2377786692118231 2.5456e-09 deg/d
Q 3.184428274349725 2.2728e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      856  
   data-arc span      21979 days (60.18 yr)  
   first obs. used      1954-11-23  
   last obs. used      2015-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58551  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:23:26  

Additional Information
 Earth MOID = .968802 AU 
 T_jup = 3.383 
[ 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
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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