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295172 (2008 FW81)
Classification: Main-belt Asteroid          SPK-ID: 2295172
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 .05621142126183188 4.8353e-08  
a 2.531091184456387 1.8673e-08 au
q 2.3888149516348 1.2184e-07 au
i 3.573286269136413 5.8766e-06 deg
node 162.6873340518091 9.2597e-05 deg
peri 291.5279431314983 0.00012378 deg
M 96.77711195721292 8.0048e-05 deg
tp 2458605.105821669633
(2019-May-01.60582167)
0.00032656 TDB
period 1470.821987970301
4.03
1.6276e-05
4.456e-08
d
yr
n .2447610947785676 2.7085e-09 deg/d
Q 2.673367417277973 1.9722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      7323 days (20.05 yr)  
   first obs. used      2000-04-05  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57827  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 18:40:28  

Additional Information
 Earth MOID = 1.40838 au 
 Jupiter MOID = 2.40892 au 
 T_jup = 3.446 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457063.5 (2015-Feb-10.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05540028530638957 4.7216e-08  
q 2.391056334585209 1.1863e-07 au
tp 2457138.684427966896
(2015-Apr-26.18442797)
0.00033217 TDB
node 162.7062841676477 9.2632e-05 deg
peri 292.7977802990726 0.0001249 deg
i 3.571687189073699 5.8737e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      7323 days (20.05 yr)  
   first obs. used      2000-04-05  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57827  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 18:40:28  

Additional Information
 Jupiter MOID = 2.40892 au 
 T_jup = 3.446 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.229344093516833E-15 -5.54015686362289E-15 -8.715834646490442E-12 -1.034933899175949E-14 -2.235422158928734E-12 -4.978777355790285E-15
q -5.54015686362289E-15 1.407309339382435E-14 2.223846050168465E-11 2.59979455272416E-14 5.694788101052387E-12 1.279659476427268E-14
tp -8.715834646490442E-12 2.223846050168465E-11 1.103360197416673E-7 2.342732731881734E-10 2.787206152384082E-8 4.522414848928405E-11
node -1.034933899175949E-14 2.59979455272416E-14 2.342732731881734E-10 8.580738490662623E-9 -8.504033965331008E-9 2.609855379923096E-10
peri -2.235422158928734E-12 5.694788101052387E-12 2.787206152384082E-8 -8.504033965331008E-9 1.560114658983933E-8 -2.489294971254775E-10
i -4.978777355790285E-15 1.279659476427268E-14 4.522414848928405E-11 2.609855379923096E-10 -2.489294971254775E-10 3.449983517914234E-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 17.1   n/a MPO413251  

295172 (2008 FW81)          Discovered 2008-Mar-27 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Alternate Designations
 2008 FW81 = 2006 WW142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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