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17881 Radmall (1999 CA51)
Classification: Main-belt Asteroid          SPK-ID: 2017881
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .151646871162397 2.7842e-08  
a 2.269044808571732 7.3104e-09 au
q 1.924951262824549 6.2096e-08 au
i 3.066879223400509 3.3225e-06 deg
node 131.7899274670995 6.3408e-05 deg
peri 121.2131362592323 6.461e-05 deg
M .3748151936017862 1.1936e-05 deg
tp 2458999.200196440874
(2020-May-29.70019644)
4.1392e-05 TDB
period 1248.426662720418
3.42
6.0333e-06
1.652e-08
d
yr
n .2883629537481458 1.3936e-09 deg/d
Q 2.613138354318915 8.419e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1701  
   data-arc span      10882 days (29.79 yr)  
   first obs. used      1990-10-21  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50224  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:16:11  

Additional Information
 Earth MOID = .912556 au 
 Jupiter MOID = 2.42571 au 
 T_jup = 3.597 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456842.5 (2014-Jul-04.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1519562088930681 2.7811e-08  
q 1.923949613798477 6.203e-08 au
tp 2456502.433453994471
(2013-Jul-28.93345399)
4.3934e-05 TDB
node 131.8093564742356 6.34e-05 deg
peri 121.1659239317001 6.4599e-05 deg
i 3.066907295048681 3.3231e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1701  
   data-arc span      10882 days (29.79 yr)  
   first obs. used      1990-10-21  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50224  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:16:11  

Additional Information
 Jupiter MOID = 2.42571 au 
 T_jup = 3.597 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.734440619302327E-16 -1.716800935239165E-15 -2.354716855149535E-13 -3.490804073816355E-15 -6.639720479897517E-14 -2.907290618810515E-16
q -1.716800935239165E-15 3.847729893208179E-15 4.375673265883739E-13 7.888174731709107E-15 1.257134817205171E-13 7.023469191529801E-16
tp -2.354716855149535E-13 4.375673265883739E-13 1.930156935728446E-9 5.263738002708382E-12 5.549341935297984E-10 -2.200638055006932E-13
node -3.490804073816355E-15 7.888174731709107E-15 5.263738002708382E-12 4.01956356995786E-9 -4.011911723324576E-9 4.152150904591628E-11
peri -6.639720479897517E-14 1.257134817205171E-13 5.549341935297984E-10 -4.011911723324576E-9 4.17296817048196E-9 -4.152306469033323E-11
i -2.907290618810515E-16 7.023469191529801E-16 -2.200638055006932E-13 4.152150904591628E-11 -4.152306469033323E-11 1.104328132292782E-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 14.9   n/a MPO358803  
diameter diameter 5.973 km 0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17881 Radmall           Discovered 1999 Feb. 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Nelson Bret Radmall (b. 1984) was awarded third place in the 2003 Intel International Science and Engineering Fair for his botany team project. He attends the Pleasant Grove High School, Pleasant Grove, Utah, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040614/MPCPages.arcLast Updated: 2009-12-11

[ show close-approach data ]
Alternate Designations
 1999 CA51 = 2000 QS61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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