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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893128755406602 6.6298e-08  
a 2.435868964186409 1.5128e-08 AU
q 1.97472760613603 1.6259e-07 AU
i 7.266124817315818 8.8811e-06 deg
node 187.6091649479167 5.4497e-05 deg
peri 100.8141949017162 6.0113e-05 deg
M 25.07123969182019 2.4024e-05 deg
tp 2456703.794178599101
(2014-Feb-15.29417860)
9.2415e-05 JED
period 1388.606871150538
3.80
1.2936e-05
3.542e-08
d
yr
n .2592526419674993 2.4151e-09 deg/d
Q 2.897010322236787 1.7992e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      746  
   data-arc span      22431 days (61.41 yr)  
   first obs. used      1952-02-01  
   last obs. used      2013-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56984  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 17:58:16  

Additional Information
 Earth MOID = .973803 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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