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JPL Small-Body Database Browser
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20550 (1999 RX110)
Classification: Main-belt Asteroid          SPK-ID: 2020550
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 .07191376235283908 3.5218e-08  
a 2.51976272580053 1.0486e-08 au
q 2.338557107951769 8.893e-08 au
i 5.808573561411776 3.9086e-06 deg
node 294.6431382274312 4.4878e-05 deg
peri 6.535870066472418 5.6104e-05 deg
M 30.75031709212908 3.455e-05 deg
tp 2458475.708502735367
(2018-Dec-23.20850274)
0.00014022 TDB
period 1460.958561196987
4.00
9.1195e-06
2.497e-08
d
yr
n .2464135599472762 1.5381e-09 deg/d
Q 2.700968343649291 1.124e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1586  
   data-arc span      11264 days (30.84 yr)  
   first obs. used      1989-01-31  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47937  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:44:47  

Additional Information
 Earth MOID = 1.3223 au 
 Jupiter MOID = 2.45267 au 
 T_jup = 3.446 
[ 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 14.3   n/a MPO502321  
diameter diameter 4.366 km 1.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.228   0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20550 (1999 RX110)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RX110 = 1989 BG2 = 1998 KB64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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