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30431 Michaeltran (2000 LR16)
Classification: Main-belt Asteroid          SPK-ID: 2030431
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1298562056149987 3.4888e-08  
a 2.269405460754169 6.3122e-09 au
q 1.974709078618675 7.9847e-08 au
i 5.808553326631832 3.8455e-06 deg
node 157.325461234452 3.2513e-05 deg
peri 359.0671645595536 3.5822e-05 deg
M 75.20299711661592 1.349e-05 deg
tp 2458939.644968155624
(2020-Mar-31.14496816)
4.6819e-05 TDB
period 1248.724320366568
3.42
5.2098e-06
1.426e-08
d
yr
n .288294216848696 1.2028e-09 deg/d
Q 2.564101842889663 7.1318e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1388  
   data-arc span      21788 days (59.65 yr)  
   first obs. used      1960-10-22  
   last obs. used      2020-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50168  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:35:00  

Additional Information
 Earth MOID = .984023 au 
 Jupiter MOID = 2.41783 au 
 T_jup = 3.596 
[ 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 15.31   n/a E2021B10  
diameter diameter 2.500 km 0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 90.014 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.283   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30431 Michaeltran           Discovered 2000 June 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Michael Tran mentored a finalist in the 2015 Intel Science Talent Search (STS), a science competition for high school seniors. He teaches at the Arnold O. Beckman High School, Irvine, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-07-02Last Updated: 2015-07-06

[ show close-approach data ]
Alternate Designations
 2000 LR16 = 1994 RL20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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