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JPL Small-Body Database Browser
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27238 Keenanmonks (1999 RL173)
Classification: Main-belt Asteroid          SPK-ID: 2027238
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04993716596309204 4.5442e-08  
a 2.794924635926716 1.5523e-08 au
q 2.655354020528109 1.2873e-07 au
i 6.134142710016526 4.4147e-06 deg
node 70.86800984088083 4.4082e-05 deg
peri 95.3871881469171 6.2856e-05 deg
M 254.0691948609966 4.3843e-05 deg
tp 2459102.696118835967
(2020-Sep-10.19611884)
0.00020806 TDB
period 1706.685817630793
4.67
1.4218e-05
3.893e-08
d
yr
n .2109351330403326 1.7573e-09 deg/d
Q 2.934495251325323 1.6298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1322  
   data-arc span      8817 days (24.14 yr)  
   first obs. used      1995-10-17  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55912  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:35:58  

Additional Information
 Earth MOID = 1.67091 au 
 Jupiter MOID = 2.05165 au 
 T_jup = 3.317 
[ 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 14.1   n/a MPO416980  
diameter diameter 4.143 km 0.191 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.283   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27238 Keenanmonks           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Keenan Monks (b. 1993) was a finalist in the 2010 Intel Science Talent Search, a science competition for high-school seniors, for his mathematical-sciences project. He attends the Hazleton Area High School, Hazleton, Pennsylvania, 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: 20110319/MPCPages.arcLast Updated: 2011-03-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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