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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04967649805205925 4.2904e-08  
a 2.794732538818683 1.4714e-08 au
q 2.655900013298031 1.2331e-07 au
i 6.133590567624036 4.145e-06 deg
node 70.86501987566437 4.0246e-05 deg
peri 95.33214124107177 5.9635e-05 deg
M 338.4763070869612 4.2484e-05 deg
tp 2459102.528873205997
(2020-Sep-10.02887321)
0.00020136 TDB
period 1706.509868104848
4.67
1.3477e-05
3.69e-08
d
yr
n .2109568814857164 1.666e-09 deg/d
Q 2.933565064339336 1.5445e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1454  
   data-arc span      8876 days (24.30 yr)  
   first obs. used      1995-10-17  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53943  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:59:56  

Additional Information
 Earth MOID = 1.671 au 
 Jupiter MOID = 2.05124 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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