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20571 Tiamorrison (1999 RA135)
Classification: Main-belt Asteroid          SPK-ID: 2020571
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1015208131530359 2.7066e-08  
a 2.239882724533528 6.5178e-09 au
q 2.012488008971447 5.9945e-08 au
i 2.104130498091754 3.7768e-06 deg
node 188.0156064403287 8.1593e-05 deg
peri 51.19232126234244 8.3925e-05 deg
M 210.8260926000014 1.9479e-05 deg
tp 2459707.872251859097
(2022-May-08.37225186)
6.6411e-05 TDB
period 1224.436725247815
3.35
5.3444e-06
1.463e-08
d
yr
n .2940127428202868 1.2833e-09 deg/d
Q 2.467277440095609 7.1795e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1939  
   data-arc span      9933 days (27.20 yr)  
   first obs. used      1993-12-15  
   last obs. used      2021-02-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47693  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:24:00  

Additional Information
 Earth MOID = .999597 au 
 Jupiter MOID = 2.52605 au 
 T_jup = 3.628 
[ 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 14.86   n/a E2021B10  
diameter diameter 3.070 km 0.634 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 450. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Masiero, J.; Jedicke, R.; Durecy, J.; Gwyn, S.; et al. (2009) Icarus 204, 145-171.]
geometric albedo albedo 0.225   0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

20571 Tiamorrison           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Tiana Morrison mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the Dunbar Middle School, Fort Worth, Texas.
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 RA135 = 1998 DA10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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