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15281 (1991 PT16)
Classification: Main-belt Asteroid          SPK-ID: 2015281
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06672060762125043 8.2354e-08  
a 2.909499237571926 3.08e-08 AU
q 2.715375680567562 2.4649e-07 AU
i 2.401862246102048 9.1932e-06 deg
node 152.3581966480759 0.00014399 deg
peri 169.760754438464 0.00015565 deg
M 269.8243706285432 6.1619e-05 deg
tp 2457454.559200174655
(2016-Mar-07.05920017)
0.00031298 JED
period 1812.699431123862
4.96
2.8784e-05
7.881e-08
d
yr
n .1985988376334417 3.1535e-09 deg/d
Q 3.103622794576289 3.2855e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      969  
   data-arc span      8361 days (22.89 yr)  
   first obs. used      1991-08-07  
   last obs. used      2014-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55332  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:25:41  

Additional Information
 Earth MOID = 1.70357 AU 
 T_jup = 3.279 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO263484  

15281 (1991 PT16)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675)
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 PT16 = 1996 TK61 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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