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JPL Small-Body Database Browser
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20536 Tracicarter (1999 RF81)
Classification: Main-belt Asteroid          SPK-ID: 2020536
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1598499794448967 3.3358e-08  
a 2.278667206554035 7.0454e-09 au
q 1.914422300424612 7.8454e-08 au
i 2.972503213958107 3.371e-06 deg
node 127.1871312477764 7.683e-05 deg
peri 147.9532060111859 7.8113e-05 deg
M 66.73760097153499 1.2839e-05 deg
tp 2458767.590142120587
(2019-Oct-11.09014212)
4.4853e-05 TDB
period 1256.376429718407
3.44
5.8269e-06
1.595e-08
d
yr
n .286538326798034 1.3289e-09 deg/d
Q 2.642912112683457 8.1717e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1373  
   data-arc span      12968 days (35.50 yr)  
   first obs. used      1984-01-25  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53132  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:08:15  

Additional Information
 Earth MOID = .898835 au 
 Jupiter MOID = 2.46543 au 
 T_jup = 3.588 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456688.5 (2014-Jan-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604219486559001 3.3436e-08  
q 1.912999463284262 7.8621e-08 au
tp 2456253.290127471733
(2012-Nov-21.79012747)
4.6601e-05 TDB
node 127.2144733042589 7.6887e-05 deg
peri 147.7760457114486 7.8151e-05 deg
i 2.971037611068191 3.3697e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1373  
   data-arc span      12968 days (35.50 yr)  
   first obs. used      1984-01-25  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53132  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:08:15  

Additional Information
 Jupiter MOID = 2.46543 au 
 T_jup = 3.588 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.117943978479739E-15 -2.622430069000335E-15 1.325416839008478E-13 -4.229985012735748E-15 8.008147062790467E-14 -8.904447775493869E-16
q -2.622430069000335E-15 6.181287397491845E-15 -3.826038119207143E-13 1.047288502143347E-14 -2.060644281493974E-13 2.140059584126244E-15
tp 1.325416839008478E-13 -3.826038119207143E-13 2.171660602997407E-9 -4.318739540531643E-12 6.649522857638995E-10 1.934750022393137E-12
node -4.229985012735748E-15 1.047288502143347E-14 -4.318739540531643E-12 5.911575117439128E-9 -5.90472968699959E-9 3.538548886405428E-11
peri 8.008147062790467E-14 -2.060644281493974E-13 6.649522857638995E-10 -5.90472968699959E-9 6.107529260053726E-9 -3.477759033900636E-11
i -8.904447775493869E-16 2.140059584126244E-15 1.934750022393137E-12 3.538548886405428E-11 -3.477759033900636E-11 1.135476021617464E-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 15.2   n/a MPO431736  
rotation period rot_per 4.82 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

20536 Tracicarter           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Traci A. Carter mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the Providence Christian School, Cape Coral, Florida.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RF81 = 1984 BC7 = 1998 DZ29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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