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109648 (2001 RU4)
Classification: Main-belt Asteroid          SPK-ID: 2109648
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0458758146965047 5.6902e-08  
a 2.62396631629674 1.7963e-08 au
q 2.503589723800441 1.4595e-07 au
i 8.458875744972408 6.2937e-06 deg
node 203.4111853305455 3.2249e-05 deg
peri 353.2226742067269 6.1198e-05 deg
M 199.5249870420298 5.2947e-05 deg
tp 2459292.555188682758
(2021-Mar-19.05518868)
0.00022982 TDB
period 1552.515019837043
4.25
1.5942e-05
4.365e-08
d
yr
n .2318818146041426 2.3811e-09 deg/d
Q 2.744342908793039 1.8787e-08 au
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      6768 days (18.53 yr)  
   first obs. used      2000-05-03  
   last obs. used      2018-11-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6233  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:01:16  

Additional Information
 Earth MOID = 1.50156 au 
 Jupiter MOID = 2.21639 au 
 T_jup = 3.386 
[ 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 15.6   n/a MPO233971  
diameter diameter 3.050 km 1.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.131   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109648 (2001 RU4)          Discovered 2001-Sep-08 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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