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20527 Dajowestrich (1999 RO48)
Classification: Main-belt Asteroid          SPK-ID: 2020527
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1451524503365719 3.0119e-08  
a 2.385180465621784 8.0235e-09 au
q 2.038965676541856 7.3101e-08 au
i 2.439661691242677 3.5706e-06 deg
node 151.3192553753412 7.7672e-05 deg
peri 68.01336410844176 7.8569e-05 deg
M 314.0007547103812 1.2604e-05 deg
tp 2459172.420829596963
(2020-Nov-18.92082960)
4.7311e-05 TDB
period 1345.489437168533
3.68
6.7891e-06
1.859e-08
d
yr
n .2675606289095731 1.3501e-09 deg/d
Q 2.731395254701712 9.1881e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1590  
   data-arc span      10644 days (29.14 yr)  
   first obs. used      1991-04-18  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49162  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:02:18  

Additional Information
 Earth MOID = 1.03274 au 
 Jupiter MOID = 2.24001 au 
 T_jup = 3.520 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457011.5 (2014-Dec-20.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1455661343714777 3.0066e-08  
q 2.037906818137735 7.3002e-08 au
tp 2456481.745844691236
(2013-Jul-08.24584469)
4.5914e-05 TDB
node 151.3355201908292 7.7658e-05 deg
peri 68.08097461903331 7.8553e-05 deg
i 2.43956916743436 3.5717e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1590  
   data-arc span      10644 days (29.14 yr)  
   first obs. used      1991-04-18  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49162  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:02:18  

Additional Information
 Jupiter MOID = 2.24001 au 
 T_jup = 3.520 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.039545052458057E-16 -2.18541692558321E-15 -7.450348457528271E-14 -1.569862462366919E-15 -1.273287434286366E-14 -3.933671352626222E-16
q -2.18541692558321E-15 5.329268658719053E-15 1.615539173015317E-13 3.90270691506848E-15 3.005045998198253E-14 1.001741184150826E-15
tp -7.450348457528271E-14 1.615539173015317E-13 2.108092865034393E-9 1.018777008525553E-11 5.523557179864305E-10 -1.017513814677028E-13
node -1.569862462366919E-15 3.90270691506848E-15 1.018777008525553E-11 6.030719313588891E-9 -6.022239302446554E-9 -5.610561702050075E-12
peri -1.273287434286366E-14 3.005045998198253E-14 5.523557179864305E-10 -6.022239302446554E-9 6.170547483131682E-9 5.587711759616062E-12
i -3.933671352626222E-16 1.001741184150826E-15 -1.017513814677028E-13 -5.610561702050075E-12 5.587711759616062E-12 1.275681894107201E-11

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 14.9   n/a MPO309314  
diameter diameter 2.934 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.271   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20527 Dajowestrich           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
David John Westrich (b. 1990) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his environmental sciences project. He attends the St. Vincent de Paul Parish School, Cape Girardeau, Missouri.
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 RO48 = 1991 HV = 2000 UW52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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