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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04715109421790404 7.6163e-08  
a 2.438230945243397 2.7368e-08 au
q 2.323265688219216 1.7919e-07 au
i 8.251772294538041 7.3122e-06 deg
node 90.8017434248902 5.8515e-05 deg
peri 49.76916303282265 0.00010801 deg
M 238.2748951353161 9.5189e-05 deg
tp 2459070.706189708104
(2020-Aug-09.20618971)		 0.00037092 TDB
period 1390.627089482418
3.81		 2.3414e-05
6.41e-08		 d
yr
n .2588760155204438 4.3586e-09 deg/d
Q 2.553196202267578 2.8658e-08 au
   Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      6889 days (18.86 yr)  
   first obs. used      2000-12-25  
   last obs. used      2019-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5381  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:13:31  

Additional Information
 Earth MOID = 1.34695 au 
 Jupiter MOID = 2.47316 au 
 T_jup = 3.487 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457174.5 (2015-Jun-01.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04632248699656492 7.6604e-08  
q 2.325582148210195 1.8e-07 au
tp 2457682.234580296344
(2016-Oct-20.73458030)		 0.00036637 TDB
node 90.85157806597499 5.8556e-05 deg
peri 50.30721438546478 0.00010899 deg
i 8.248733213951475 7.3091e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      6889 days (18.86 yr)  
   first obs. used      2000-12-25  
   last obs. used      2019-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5381  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:13:31  

Additional Information
 Jupiter MOID = 2.47316 au 
 T_jup = 3.487 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.86816926615402E-15 -1.365713813617706E-14 6.720341548549895E-12 -4.097176505584314E-14 1.764246649874418E-12 -5.02990925943776E-16
q -1.365713813617706E-14 3.239912274179697E-14 -1.297372151255382E-11 1.025595346774347E-13 -3.489320935197573E-12 2.668819868953892E-15
tp 6.720341548549895E-12 -1.297372151255382E-11 1.342277758176597E-7 1.421823646284024E-10 3.375104867638384E-8 1.38435750845542E-11
node -4.097176505584314E-14 1.025595346774347E-13 1.421823646284024E-10 3.428863223853478E-9 -3.356577974893231E-9 5.949551897514599E-12
peri 1.764246649874418E-12 -3.489320935197573E-12 3.375104867638384E-8 -3.356577974893231E-9 1.187874625646203E-8 -2.381257156194418E-12
i -5.02990925943776E-16 2.668819868953892E-15 1.38435750845542E-11 5.949551897514599E-12 -2.381257156194418E-12 5.342248568436938E-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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