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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .159850016981757 3.4081e-08  
a 2.278667199101962 7.2821e-09 au
q 1.914422208629741 7.9945e-08 au
i 2.972501997232027 3.7144e-06 deg
node 127.1871841227412 7.7853e-05 deg
peri 147.9531503808361 7.916e-05 deg
M 66.73760757763208 1.3169e-05 deg
tp 2458767.590120208291
4.5977e-05 TDB
period 1256.376423555193
n .2865383282036613 1.3736e-09 deg/d
Q 2.642912189574183 8.4462e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1260  
   data-arc span      12890 days (35.29 yr)  
   first obs. used      1984-01-25  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52417  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:53:16  

Additional Information
 Earth MOID = .898835 au 
 Jupiter MOID = 2.46543 au 
 T_jup = 3.588 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2158-Jan-23 01:36 < 00:01 Juno 0.0258611356027563 0.0258583490561935 0.0258639379121917 8.34668431583732 8.34668425947558 2509275.566471977 0.426937832594267 1042.54004938909 31.4154597587811 82.5166927235007 122069.733050397 T 22 CATAB v2.0e-lin.ifort 2019-May-30 02:53:25 2019-May-30 02:53

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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