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295537 (2008 RF138)
Classification: Outer Main-belt Asteroid          SPK-ID: 2295537
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1334873420443871 4.7411e-08  
a 3.202713567934219 4.2698e-08 au
q 2.775191846421185 1.6494e-07 au
i 21.87411370734028 1.1774e-05 deg
node 351.5985760027044 1.3494e-05 deg
peri 95.66217992600468 4.8663e-05 deg
M 280.3121788490304 4.3711e-05 deg
tp 2459463.909601624096
(2021-Sep-06.40960162)
0.0002545 TDB
period 2093.51258668019
5.73
4.1866e-05
1.146e-07
d
yr
n .1719597972758663 3.4388e-09 deg/d
Q 3.630235289447254 4.8398e-08 au
  Orbit Determination Parameters
   # obs. used (total)      354  
   data-arc span      7953 days (21.77 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53328  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:49:01  

Additional Information
 Earth MOID = 1.89558 au 
 Jupiter MOID = 1.72371 au 
 T_jup = 3.068 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457734.5 (2016-Dec-12.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300055701427392 4.6964e-08  
q 2.790185797515368 1.6225e-07 au
tp 2457363.918505386553
(2015-Dec-07.41850539)
0.00026772 TDB
node 351.8349724886448 1.3409e-05 deg
peri 94.96128298009808 5.0479e-05 deg
i 21.91438942104481 1.1783e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      354  
   data-arc span      7953 days (21.77 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53328  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:49:01  

Additional Information
 Jupiter MOID = 1.72371 au 
 T_jup = 3.068 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.20560345507738E-15 -7.428917899255278E-15 -2.941562120667941E-13 -2.807562499942906E-15 4.850889132837866E-14 -1.175409832653009E-14
q -7.428917899255278E-15 2.632630397521205E-14 -7.841668222986559E-14 1.440310802911272E-14 -3.043018917174248E-13 5.411089083698501E-14
tp -2.941562120667941E-13 -7.841668222986559E-14 7.167306022933601E-8 -5.178763208193868E-11 1.303002803296782E-8 1.05981729875141E-10
node -2.807562499942906E-15 1.440310802911272E-14 -5.178763208193868E-11 1.798003520561931E-10 -1.756750301727289E-10 5.535362472186659E-11
peri 4.850889132837866E-14 -3.043018917174248E-13 1.303002803296782E-8 -1.756750301727289E-10 2.548083591402829E-9 -3.263904661802703E-11
i -1.175409832653009E-14 5.411089083698501E-14 1.05981729875141E-10 5.535362472186659E-11 -3.263904661802703E-11 1.388348611787224E-10

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 15.1   n/a MPO476297  
diameter diameter 5.372 km 0.143 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

295537 (2008 RF138)          Discovered 2008-Sep-06 by CSS at Catalina
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

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