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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1892599038164158 5.6718e-08  
a 2.435490133248125 1.5485e-08 AU
q 1.974549504883755 1.335e-07 AU
i 7.266701151945797 8.452e-06 deg
node 187.6083978335529 3.9768e-05 deg
peri 100.7752570675911 4.6736e-05 deg
M 76.96619584708144 2.3671e-05 deg
tp 2456703.692063659673
(2014-Feb-15.19206366)
9.0392e-05 JED
period 1388.282945603961
3.80
1.324e-05
3.625e-08
d
yr
n .2593131329171411 2.473e-09 deg/d
Q 2.896430761612494 1.8415e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      882  
   data-arc span      22998 days (62.97 yr)  
   first obs. used      1952-02-01  
   last obs. used      2015-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53109  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:42:43  

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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