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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06672060757346487 8.2353e-08  
a 2.90949923752653 3.0797e-08 AU
q 2.715375680664228 2.4649e-07 AU
i 2.401862237799491 9.1928e-06 deg
node 152.3581962321699 0.00014393 deg
peri 169.7607549596136 0.00015559 deg
M 269.8243705507925 6.1617e-05 deg
tp 2457454.559200555525
(2016-Mar-07.05920056)
0.00031297 JED
period 1812.699431081438
4.96
2.8781e-05
7.88e-08
d
yr
n .1985988376380896 3.1532e-09 deg/d
Q 3.103622794388833 3.2851e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      979  
   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      .55058  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:26:51  

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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