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295651 (2008 ST307)
Classification: Main-belt Asteroid          SPK-ID: 2295651
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05273235130000217 5.5735e-08  
a 3.088643141952035 4.183e-08 au
q 2.925771726750278 1.7964e-07 au
i 9.77171066668604 6.8779e-06 deg
node 245.9318638585223 3.9519e-05 deg
peri 214.1124755675388 8.2122e-05 deg
M 347.7246056739633 7.3097e-05 deg
tp 2459068.105647727754
(2020-Aug-06.60564773)
0.000403 TDB
period 1982.66813558642
5.43
4.0277e-05
1.103e-07
d
yr
n .1815735036733828 3.6886e-09 deg/d
Q 3.251514557153793 4.4036e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      9869 days (27.02 yr)  
   first obs. used      1992-11-25  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56378  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 18:31:22  

Additional Information
 Earth MOID = 1.94798 au 
 Jupiter MOID = 1.97026 au 
 T_jup = 3.201 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457477.5 (2016-Mar-30.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05165372409464784 5.559e-08  
q 2.931534649646612 1.7906e-07 au
tp 2457098.138343682189
(2015-Mar-16.63834368)
0.000402 TDB
node 246.0024058129731 3.9588e-05 deg
peri 216.3499640778339 8.3549e-05 deg
i 9.759166565072007 6.8714e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      9869 days (27.02 yr)  
   first obs. used      1992-11-25  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56378  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 18:31:22  

Additional Information
 Jupiter MOID = 1.97026 au 
 T_jup = 3.201 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.090299685398834E-15 -9.706933835795242E-15 -2.336493131863805E-12 -1.083655814791048E-14 -4.098529917978125E-13 -9.024771843356286E-16
q -9.706933835795242E-15 3.206171928000572E-14 1.027709385864981E-11 3.498928953961025E-14 1.877945066182712E-12 3.071026026901725E-15
tp -2.336493131863805E-12 1.027709385864981E-11 1.616070536342738E-7 6.03347670110652E-11 2.963462627260492E-8 -9.44987370924481E-12
node -1.083655814791048E-14 3.498928953961025E-14 6.03347670110652E-11 1.567222306029122E-9 -1.533084928840505E-9 -3.486522217372007E-11
peri -4.098529917978125E-13 1.877945066182712E-12 2.963462627260492E-8 -1.533084928840505E-9 6.980414416598762E-9 3.270926805128285E-11
i -9.024771843356286E-16 3.071026026901725E-15 -9.44987370924481E-12 -3.486522217372007E-11 3.270926805128285E-11 4.721551966541591E-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 15.7   n/a MPO503287  
diameter diameter 3.191 km 0.867 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

295651 (2008 ST307)          Discovered 2008-Sep-29 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Alternate Designations
 2008 ST307 = 2008 SB185 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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