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305309 (2008 AP40)
Classification: Main-belt Asteroid          SPK-ID: 2305309
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03142996534021368 1.0865e-07  
a 3.047164108922212 5.2317e-08 au
q 2.951391846592844 3.2028e-07 au
i 4.966722504599997 1.1695e-05 deg
node 344.993636544204 9.0716e-05 deg
peri 200.5196941627351 0.00015919 deg
M 69.39513125136524 0.00012818 deg
tp 2458625.985450614942
(2019-May-22.48545061)
0.0006926 TDB
period 1942.863070468918
5.32
5.0036e-05
1.37e-07
d
yr
n .1852935523207575 4.772e-09 deg/d
Q 3.14293637125158 5.3961e-08 au
  Orbit Determination Parameters
   # obs. used (total)      126  
   data-arc span      5849 days (16.01 yr)  
   first obs. used      2003-03-31  
   last obs. used      2019-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .73329  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:15:55  

Additional Information
 Earth MOID = 1.95338 au 
 Jupiter MOID = 1.82555 au 
 T_jup = 3.232 
[ 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 16.4   n/a MPO471205  

305309 (2008 AP40)          Discovered 2008-Jan-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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