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101964 (1999 RU41)
Classification: Main-belt Asteroid          SPK-ID: 2101964
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2578768247912854 4.1451e-08  
a 2.585725558003735 9.9032e-09 au
q 1.918926861324057 1.0367e-07 au
i 4.684755138992953 4.2552e-06 deg
node 174.7454557895715 7.2803e-05 deg
peri 179.8973077462993 7.4014e-05 deg
M 359.6375851747756 1.4247e-05 deg
tp 2459002.028887476519
(2020-Jun-01.52888748)
6.0107e-05 TDB
period 1518.700266210345
4.16
8.7249e-06
2.389e-08
d
yr
n .2370447994312387 1.3618e-09 deg/d
Q 3.252524254683413 1.2457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      458  
   data-arc span      9682 days (26.51 yr)  
   first obs. used      1994-05-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54842  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:29:46  

Additional Information
 Earth MOID = .914198 au 
 Jupiter MOID = 2.19485 au 
 T_jup = 3.370 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO439697  
diameter diameter 3.762 km 0.977 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101964 (1999 RU41)          Discovered 1999-Sep-13 by Korlevic, K. at Visnjan
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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