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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06791133539649907 1.8771e-08  
a 2.913043992169679 1.4509e-08 au
q 2.715215284592688 5.8328e-08 au
i 2.403986621972844 8.6234e-07 deg
node 152.2776027330784 2.5119e-05 deg
peri 167.7061798737658 3.2462e-05 deg
M 348.6391515853581 2.0762e-05 deg
tp 2459257.809584030398
(2021-Feb-12.30958403)
0.00010473 TDB
period 1816.01316186504
4.97
1.3567e-05
3.714e-08
d
yr
n .1982364486996785 1.481e-09 deg/d
Q 3.110872699746671 1.5494e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1665  
   data-arc span      10658 days (29.18 yr)  
   first obs. used      1991-08-07  
   last obs. used      2020-10-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50683  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:53:58  

Additional Information
 Earth MOID = 1.70027 au 
 Jupiter MOID = 2.09323 au 
 T_jup = 3.278 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.21   n/a E2021B10  
diameter diameter 7.364 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.205   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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