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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1328610487859356 5.3511e-08  
a 3.204595391984512 7.4941e-08 au
q 2.778829487270873 1.6808e-07 au
i 21.8647619483803 1.3256e-05 deg
node 351.6194519236602 1.5421e-05 deg
peri 95.48625247812168 5.4407e-05 deg
M 211.6750118895705 5.3382e-05 deg
tp 2459463.816525286182
(2021-Sep-06.31652529)
0.00032517 TDB
period 2095.357991005778
5.74
7.3501e-05
2.012e-07
d
yr
n .171808350432376 6.0267e-09 deg/d
Q 3.630361296698151 8.4897e-08 au
  Orbit Determination Parameters
   # obs. used (total)      230  
   data-arc span      7475 days (20.47 yr)  
   first obs. used      1999-01-14  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60539  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:43:19  

Additional Information
 Earth MOID = 1.89933 au 
 Jupiter MOID = 1.72478 au 
 T_jup = 3.067 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457138.5 (2015-Apr-26.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .129615811364289 5.2789e-08  
q 2.789527441795109 1.6483e-07 au
tp 2457362.402246134578
(2015-Dec-05.90224613)
0.00030547 TDB
node 351.8327414213245 1.5359e-05 deg
peri 94.63358526307925 5.6353e-05 deg
i 21.91699414765911 1.3266e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      230  
   data-arc span      7475 days (20.47 yr)  
   first obs. used      1999-01-14  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60539  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:43:19  

Additional Information
 Jupiter MOID = 1.72478 au 
 T_jup = 3.067 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.786648384268247E-15 -8.034369725745636E-15 3.101954178539017E-12 -3.041057828925707E-15 6.04117657282999E-13 -7.440774282171484E-15
q -8.034369725745636E-15 2.716928594028711E-14 -2.892597411486438E-12 1.051644077175189E-14 -7.632935011211107E-13 5.263543287716269E-14
tp 3.101954178539017E-12 -2.892597411486438E-12 9.331112270192388E-8 -2.869031713894076E-11 1.65712319321705E-8 9.976608740460871E-11
node -3.041057828925707E-15 1.051644077175189E-14 -2.869031713894076E-11 2.359131678553577E-10 -2.232043857923508E-10 1.244393627378977E-11
peri 6.04117657282999E-13 -7.632935011211107E-13 1.65712319321705E-8 -2.232043857923508E-10 3.175674101572014E-9 5.256989985001084E-12
i -7.440774282171484E-15 5.263543287716269E-14 9.976608740460871E-11 1.244393627378977E-11 5.256989985001084E-12 1.759775437899561E-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 15.2   n/a MPO360474  
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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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