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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2342936432753145 7.0928e-08  
a 2.580465786006526 1.7389e-08 au
q 1.975879055655759 1.8114e-07 au
i 3.907064477954644 6.5705e-06 deg
node 320.8009713905101 9.9232e-05 deg
peri 19.78323138264872 9.991e-05 deg
M 313.8405612188445 1.943e-05 deg
tp 2457594.634894396262
(2016-Jul-25.13489440)
8.2642e-05 JED
period 1514.068711147027
4.15
1.5304e-05
4.19e-08
d
yr
n .2377699224279401 2.4034e-09 deg/d
Q 3.185052516357293 2.1463e-08 au
  Orbit Determination Parameters
   # obs. used (total)      932  
   data-arc span      22099 days (60.50 yr)  
   first obs. used      1954-11-23  
   last obs. used      2015-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57636  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:01:58  

Additional Information
 Earth MOID = .965832 au 
 Jupiter MOID = 2.20941 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 13.9 mag n/a MPO337328  

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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