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59812 (1999 RA18)
Classification: Outer Main-belt Asteroid          SPK-ID: 2059812
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0365237643988509 5.1228e-08  
a 3.239609340105797 2.7937e-08 au
q 3.121286611823457 1.6769e-07 au
i 14.94547587948001 6.1747e-06 deg
node 343.6983989850868 1.7761e-05 deg
peri 228.5428483103157 8.2292e-05 deg
M 332.4543566896937 8.1389e-05 deg
tp 2459163.462549031883
(2020-Nov-09.96254903)
0.00048131 TDB
period 2129.792976355264
5.83
2.7549e-05
7.543e-08
d
yr
n .169030513292457 2.1864e-09 deg/d
Q 3.357932068388139 2.8957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      884  
   data-arc span      8416 days (23.04 yr)  
   first obs. used      1997-01-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51563  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:55:02  

Additional Information
 Earth MOID = 2.13899 au 
 Jupiter MOID = 1.6591 au 
 T_jup = 3.130 
[ 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 13.8   n/a MPO385201  
diameter diameter 11.892 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59812 (1999 RA18)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RA18 = 2000 XX35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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