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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1192359603025804 9.1081e-09  
a 2.687413799107877 1.0991e-08 au
q 2.366977434040843 3.0198e-08 au
i 13.56917840635445 5.2131e-07 deg
node 100.8827718767524 2.3423e-06 deg
peri 106.7925221195702 9.2402e-06 deg
M 274.2655034037121 1.0419e-05 deg
tp 2459583.724567266702
(2022-Jan-04.22456727)		 4.7403e-05 TDB
period 1609.163751968495
4.41		 9.8713e-06
2.703e-08		 d
yr
n .2237186859072675 1.3724e-09 deg/d
Q 3.00785016417491 1.2301e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2081  
   data-arc span      11453 days (31.36 yr)  
   first obs. used      1989-11-04  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48647  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:15:47  

Additional Information
 Earth MOID = 1.40068 au 
 Jupiter MOID = 2.1056 au 
 T_jup = 3.323 
[ 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 13.74   n/a E2021B10  
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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