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15997 (1999 AX)
Classification: Main-belt Asteroid          SPK-ID: 2015997
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1193979553591967 3.878e-08  
a 2.687012827006284 1.228e-08 au
q 2.366188989437799 1.055e-07 au
i 13.56984384910557 3.4017e-06 deg
node 100.88217147 1.884e-05 deg
peri 106.8426804955711 2.3898e-05 deg
M 229.4791498351723 1.5903e-05 deg
tp 2459583.784491562257
(2022-Jan-04.28449156)		 7.2384e-05 TDB
period 1608.803625606462
4.40		 1.1028e-05
3.019e-08		 d
yr
n .2237687647330436 1.5339e-09 deg/d
Q 3.007836664574769 1.3746e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1617  
   data-arc span      11042 days (30.23 yr)  
   first obs. used      1989-11-04  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51467  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:32:42  

Additional Information
 Earth MOID = 1.40088 au 
 Jupiter MOID = 2.10669 au 
 T_jup = 3.324 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO358786  
diameter diameter 5.738 km 0.293 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15997 (1999 AX)          Discovered 1999-Jan-07 by Kobayashi, T. at Oizumi
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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