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154889 (2004 RB166)
Classification: Main-belt Asteroid          SPK-ID: 2154889
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05633419325485139 5.0874e-08  
a 3.087871746672541 3.0953e-08 au
q 2.913918982949295 1.6419e-07 au
i 2.459368491275336 5.7852e-06 deg
node 218.5187237578844 0.00010651 deg
peri 193.957752805449 0.0001184 deg
M 258.4929189186997 5.6039e-05 deg
tp 2459559.331844870768
(2021-Dec-10.83184487)
0.00031302 TDB
period 1981.925418506964
5.43
2.98e-05
8.159e-08
d
yr
n .1816415474761898 2.7312e-09 deg/d
Q 3.261824510395787 3.2697e-08 au
  Orbit Determination Parameters
   # obs. used (total)      445  
   data-arc span      9446 days (25.86 yr)  
   first obs. used      1993-08-14  
   last obs. used      2019-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61686  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:35:08  

Additional Information
 Earth MOID = 1.92468 au 
 Jupiter MOID = 1.97207 au 
 T_jup = 3.222 
[ 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 MPO436784  
diameter diameter 4.130 km 0.792 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

154889 (2004 RB166)          Discovered 2004-Sep-06 by Siding Spring Survey at Siding Spring
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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