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22459 (1997 AD2)
Classification: Main-belt Asteroid          SPK-ID: 2022459
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0632625393056315 1.3254e-08  
a 2.325160380443151 6.9794e-09 au
q 2.178064830483469 3.0551e-08 au
i 5.104138560323321 7.2346e-07 deg
node 33.7579056326426 1.3513e-05 deg
peri 224.0186444202373 2.1013e-05 deg
M 133.0483197712635 1.5312e-05 deg
tp 2458721.886778419159
(2019-Aug-26.38677842)		 5.5124e-05 TDB
period 1295.023943671908
3.55		 5.8309e-06
1.596e-08		 d
yr
n .2779871381985856 1.2517e-09 deg/d
Q 2.472255930402833 7.421e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2246  
   data-arc span      9297 days (25.45 yr)  
   first obs. used      1995-09-23  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4842  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:06:34  

Additional Information
 Earth MOID = 1.16504 au 
 Jupiter MOID = 2.54212 au 
 T_jup = 3.567 
[ 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 14.31   n/a E2021B10  
diameter diameter 4.732 km 1.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.122   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

22459 (1997 AD2)          Discovered 1997-Jan-03 by Kobayashi, T. at Oizumi
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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