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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06779261747419078 6.3467e-08  
a 2.911502437688132 1.7011e-08 au
q 2.714124066654767 1.8566e-07 au
i 2.402223071943539 7.3383e-06 deg
node 152.3200255188787 0.00011475 deg
peri 168.3532189792847 0.00012422 deg
M 308.3534972622584 5.0108e-05 deg
tp 2459260.823024659700
(2021-Feb-15.32302466)		 0.00025324 TDB
period 1814.5718279005
4.97		 1.5903e-05
4.354e-08		 d
yr
n .1983939100479301 1.7387e-09 deg/d
Q 3.108880808721497 1.8164e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1469  
   data-arc span      10139 days (27.76 yr)  
   first obs. used      1991-08-07  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51611  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:19:17  

Additional Information
 Earth MOID = 1.70127 au 
 Jupiter MOID = 2.09816 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 13.2   n/a MPO384887  
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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