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15280 (1991 PW11)
Classification: Main-belt Asteroid          SPK-ID: 2015280
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1892599012148732 5.6984e-08  
a 2.435490134073133 1.554e-08 AU
q 1.974549511888653 1.3428e-07 AU
i 7.266700909951411 8.5124e-06 deg
node 187.6083994693902 4.0604e-05 deg
peri 100.7752554276603 4.7514e-05 deg
M 76.96619536688482 2.368e-05 deg
tp 2456703.692065360663
(2014-Feb-15.19206536)
9.0431e-05 JED
period 1388.28294630937
3.80
1.3288e-05
3.638e-08
d
yr
n .2593131327853799 2.4819e-09 deg/d
Q 2.896430756257612 1.8482e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      840  
   data-arc span      22915 days (62.74 yr)  
   first obs. used      1952-02-01  
   last obs. used      2014-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53797  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:24:11  

Additional Information
 Earth MOID = .975501 AU 
 T_jup = 3.469 
[ 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 14.3 mag n/a MPO266038  

15280 (1991 PW11)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675)
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PW11 = 1998 HJ71 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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