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305561 (2008 VA23)
Classification: Main-belt Asteroid          SPK-ID: 2305561
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04702242193813847 6.0058e-08  
a 2.438649098054441 2.072e-08 au
q 2.323977911206664 1.5064e-07 au
i 8.251655837044341 7.2137e-06 deg
node 90.80153209067841 4.0854e-05 deg
peri 49.47937389043074 8.8077e-05 deg
M 342.0803390145724 7.8584e-05 deg
tp 2459069.738824376874
(2020-Aug-08.23882438)		 0.00030369 TDB
period 1390.984840390936
3.81		 1.7728e-05
4.854e-08		 d
yr
n .258809434543386 3.2984e-09 deg/d
Q 2.553320284902218 2.1694e-08 au
   Orbit Determination Parameters
   # obs. used (total)      150  
   data-arc span      6973 days (19.09 yr)  
   first obs. used      2000-12-25  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:56:01  

Additional Information
 Earth MOID = 1.3472 au 
 Jupiter MOID = 2.47185 au 
 T_jup = 3.487 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457736.5 (2016-Dec-14.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04658805235604627 6.0079e-08  
q 2.324985966001315 1.5053e-07 au
tp 2457683.186724212531
(2016-Oct-21.68672421)		 0.00030622 TDB
node 90.84210992215526 4.0887e-05 deg
peri 50.59585259454764 8.8744e-05 deg
i 8.248543962819221 7.2103e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      150  
   data-arc span      6973 days (19.09 yr)  
   first obs. used      2000-12-25  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:56:01  

Additional Information
 Jupiter MOID = 2.47185 au 
 T_jup = 3.487 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.609493542726163E-15 -8.967576950888375E-15 -2.70882003019243E-12 -1.101363439443389E-14 -5.334999110333665E-13 -1.154082098487198E-15
q -8.967576950888375E-15 2.26607730083413E-14 6.531599732325452E-12 2.716703310607007E-14 1.276771957204118E-12 3.65540140693251E-15
tp -2.70882003019243E-12 6.531599732325452E-12 9.377009190075859E-8 6.467205285988823E-12 2.413326595170996E-8 8.441932557852414E-12
node -1.101363439443389E-14 2.716703310607007E-14 6.467205285988823E-12 1.671708302340559E-9 -1.65237666489523E-9 -3.774454294638513E-11
peri -5.334999110333665E-13 1.276771957204118E-12 2.413326595170996E-8 -1.65237666489523E-9 7.875467816644586E-9 3.953766985955479E-11
i -1.154082098487198E-15 3.65540140693251E-15 8.441932557852414E-12 -3.774454294638513E-11 3.953766985955479E-11 5.198897411773549E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.0   n/a MPO455250  

305561 (2008 VA23)          Discovered 2008-Nov-01 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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