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312260 (2008 AG22)
Classification: Main-belt Asteroid          SPK-ID: 2312260
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2180408935097635 4.2237e-08  
a 2.68591748677944 1.8823e-08 au
q 2.100277638068552 1.1411e-07 au
i 8.102834692719563 7.7983e-06 deg
node 329.6464030966959 3.1434e-05 deg
peri 128.7286631943064 3.6928e-05 deg
M 314.2242070078045 1.8975e-05 deg
tp 2459204.942320945166
(2020-Dec-21.44232095)
8.5824e-05 TDB
period 1607.820001126094
4.40
1.6901e-05
4.627e-08
d
yr
n .223905660924644 2.3537e-09 deg/d
Q 3.271557335490327 2.2927e-08 au
  Orbit Determination Parameters
   # obs. used (total)      372  
   data-arc span      8000 days (21.90 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52713  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 06:10:53  

Additional Information
 Earth MOID = 1.12789 au 
 Jupiter MOID = 1.92586 au 
 T_jup = 3.326 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457768.5 (2017-Jan-15.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2155571385548408 4.2369e-08  
q 2.108681649681637 1.1429e-07 au
tp 2457595.577648682421
(2016-Jul-26.07764868)
8.0471e-05 TDB
node 329.8393473020738 3.1388e-05 deg
peri 128.5212907883038 3.7083e-05 deg
i 8.103161923720466 7.8024e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      372  
   data-arc span      8000 days (21.90 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52713  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 06:10:53  

Additional Information
 Jupiter MOID = 1.92586 au 
 T_jup = 3.326 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.795153835065446E-15 -4.801641942210592E-15 1.648241337289094E-12 -1.527095514537506E-14 4.361471590493433E-13 -2.4178061685225E-15
q -4.801641942210592E-15 1.306149931838125E-14 -4.035801716178661E-12 3.958632609646294E-14 -1.077539997843496E-12 6.589504726938283E-15
tp 1.648241337289094E-12 -4.035801716178661E-12 6.475589323637531E-9 -3.274064394590718E-11 1.60305578670192E-9 -1.892281577877818E-12
node -1.527095514537506E-14 3.958632609646294E-14 -3.274064394590718E-11 9.851928608075408E-10 -9.827486180711697E-10 8.414305230360423E-11
peri 4.361471590493433E-13 -1.077539997843496E-12 1.60305578670192E-9 -9.827486180711697E-10 1.375113869304333E-9 -8.382209214994862E-11
i -2.4178061685225E-15 6.589504726938283E-15 -1.892281577877818E-12 8.414305230360423E-11 -8.382209214994862E-11 6.087811577652515E-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 16.4   n/a MPO494654  

312260 (2008 AG22)          Discovered 2008-Jan-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2008 AG22 = 2002 UA32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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