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164818 (1999 RR41)
Classification: Main-belt Asteroid          SPK-ID: 2164818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1691325517002892 7.0306e-08  
a 2.52531997784877 1.5958e-08 au
q 2.09820616613549 1.774e-07 au
i 12.58227537354336 1.5833e-05 deg
node 354.5173706350632 2.304e-05 deg
peri 275.2909568620062 7.2594e-05 deg
M 116.1087131066002 6.5508e-05 deg
tp 2458527.745839720500
(2019-Feb-13.24583972)
0.00026722 TDB
period 1465.794367597254
4.01
1.3894e-05
3.804e-08
d
yr
n .2456006162652377 2.328e-09 deg/d
Q 2.95243378956205 1.8657e-08 au
  Orbit Determination Parameters
   # obs. used (total)      380  
   data-arc span      9369 days (25.65 yr)  
   first obs. used      1994-04-02  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54923  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 11:47:03  

Additional Information
 Earth MOID = 1.12773 au 
 Jupiter MOID = 2.29981 au 
 T_jup = 3.401 
[ 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 16.5   n/a MPO436827  
diameter diameter 2.244 km 0.440 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

164818 (1999 RR41)          Discovered 1999-Sep-14 by Klet at Klet
Reference: 20071026/Numbers.arcLast Updated: 2007-10-28

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