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59901 (1999 RA145)
Classification: Main-belt Asteroid          SPK-ID: 2059901
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .260683508932597 5.1879e-08  
a 2.631226340567428 1.402e-08 au
q 1.945309025312434 1.3965e-07 au
i 12.56802279947513 6.1421e-06 deg
node 185.0519915512631 1.7685e-05 deg
peri 162.3642283852369 1.9618e-05 deg
M 304.4930278037625 7.9743e-06 deg
tp 2459240.870283828877
(2021-Jan-26.37028383)
3.5509e-05 TDB
period 1558.962752867673
4.27
1.246e-05
3.411e-08
d
yr
n .2309227717838601 1.8456e-09 deg/d
Q 3.317143655822421 1.7674e-08 au
  Orbit Determination Parameters
   # obs. used (total)      570  
   data-arc span      8108 days (22.20 yr)  
   first obs. used      1998-03-22  
   last obs. used      2020-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53744  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:43:09  

Additional Information
 Earth MOID = .943349 au 
 Jupiter MOID = 2.15048 au 
 T_jup = 3.318 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO436201  
diameter diameter 3.323 km 0.702 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.020   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59901 (1999 RA145)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RA145 = 1998 HU9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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