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18488 (1996 AY3)
Classification: Main-belt Asteroid          SPK-ID: 2018488
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 .2702944544060387 1.8973e-08  
a 3.173112688453032 1.4801e-08 au
q 2.315437925558741 6.1945e-08 au
i 17.68413819484481 4.1551e-07 deg
node 138.1346121542475 6.2489e-06 deg
peri 257.1333105163399 7.1452e-06 deg
M 213.650873314718 4.5836e-06 deg
tp 2460039.794360318636
(2023-Apr-05.29436032)
2.9655e-05 TDB
period 2064.55601449855
5.65
1.4445e-05
3.955e-08
d
yr
n .1743716312233062 1.22e-09 deg/d
Q 4.030787451347322 1.8802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2262  
   data-arc span      9197 days (25.18 yr)  
   first obs. used      1996-01-13  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45608  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:44:05  

Additional Information
 Earth MOID = 1.39369 au 
 Jupiter MOID = 1.86422 au 
 T_jup = 3.072 
[ 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 12.17   n/a MPCxxxxx  
diameter diameter 24.637 km 9.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.067   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

18488 (1996 AY3)          Discovered 1996-Jan-13 by Sato, N., Urata, T. at Chichibu
Reference: 20001111/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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