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305291 (2008 AH5)
Classification: Main-belt Asteroid          SPK-ID: 2305291
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06291518362999009 8.9532e-08  
a 3.120164048460698 3.9677e-08 au
q 2.9238583543961 2.8719e-07 au
i 7.876049178165781 7.4996e-06 deg
node 309.498071868661 4.9943e-05 deg
peri 199.416488436038 8.4366e-05 deg
M 72.39911671980921 6.4299e-05 deg
tp 2458595.648887922519
(2019-Apr-22.14888792)
0.00035845 TDB
period 2013.096387790811
5.51
3.8398e-05
1.051e-07
d
yr
n .1788289930791973 3.411e-09 deg/d
Q 3.316469742525296 4.2173e-08 au
  Orbit Determination Parameters
   # obs. used (total)      214  
   data-arc span      13931 days (38.14 yr)  
   first obs. used      1981-03-07  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54543  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:53:28  

Additional Information
 Earth MOID = 1.937 au 
 Jupiter MOID = 1.717 au 
 T_jup = 3.199 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457224.5 (2015-Jul-21.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06410734804635074 8.8994e-08  
q 2.920805163140725 2.8607e-07 au
tp 2456577.567188955226
(2013-Oct-12.06718896)
0.00035042 TDB
node 309.5260021035128 4.9939e-05 deg
peri 198.7419287209436 8.3634e-05 deg
i 7.876273302722518 7.4997e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      214  
   data-arc span      13931 days (38.14 yr)  
   first obs. used      1981-03-07  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54543  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:53:28  

Additional Information
 Jupiter MOID = 1.717 au 
 T_jup = 3.199 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.919855432517612E-15 -2.52444556167112E-14 1.398410859331482E-11 2.179800549612789E-14 2.860633242575312E-12 -1.836211464690033E-15
q -2.52444556167112E-14 8.18343768821745E-14 -4.333810647018516E-11 -5.841667282743751E-14 -8.808662510213548E-12 7.20574579642727E-15
tp 1.398410859331482E-11 -4.333810647018516E-11 1.227932639898205E-7 1.444843001973508E-10 2.354677091634236E-8 2.74470849187907E-11
node 2.179800549612789E-14 -5.841667282743751E-14 1.444843001973508E-10 2.493900464299894E-9 -2.440831687094407E-9 8.153545702945521E-11
peri 2.860633242575312E-12 -8.808662510213548E-12 2.354677091634236E-8 -2.440831687094407E-9 6.99459432516848E-9 -7.567683414204353E-11
i -1.836211464690033E-15 7.20574579642727E-15 2.74470849187907E-11 8.153545702945521E-11 -7.567683414204353E-11 5.624500053641968E-11

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 15.5   n/a MPO471205  

305291 (2008 AH5)          Discovered 2008-Jan-09 by LUSS at Lulin
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2008 AH5 = 1981 EZ36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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