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21329 (1997 AP15)
Classification: Main-belt Asteroid          SPK-ID: 2021329
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1777713146492914 3.3075e-08  
a 2.380702323736093 8.5123e-09 au
q 1.957481741856905 7.6792e-08 au
i 7.240235495673027 4.0225e-06 deg
node 318.1633671881462 2.8683e-05 deg
peri 271.5925641428785 3.092e-05 deg
M 90.73414496169451 1.1471e-05 deg
tp 2458862.338375717267
(2020-Jan-13.83837572)
4.2311e-05 TDB
period 1341.702010783025
3.67
7.1959e-06
1.97e-08
d
yr
n .2683159130020994 1.4391e-09 deg/d
Q 2.803922905615281 1.0026e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1413  
   data-arc span      15225 days (41.68 yr)  
   first obs. used      1979-03-29  
   last obs. used      2020-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50725  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:52:03  

Additional Information
 Earth MOID = .962387 au 
 Jupiter MOID = 2.24886 au 
 T_jup = 3.506 
[ 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 14.91   n/a E2021B10  
diameter diameter 3.622 km 0.975 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.133   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

21329 (1997 AP15)          Discovered 1997-Jan-12 by JPL/GEODSS NEAT at Haleakala
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AP15 = 1979 FA1 = 1990 EB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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