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101946 (1999 RR26)
Classification: Main-belt Asteroid          SPK-ID: 2101946
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09204910576104858 5.096e-08  
a 3.112642209673711 2.7413e-08 au
q 2.826126277719152 1.6307e-07 au
i 9.38682639256548 6.0292e-06 deg
node 343.6394637167318 2.8872e-05 deg
peri 29.00592796616395 4.1202e-05 deg
M 268.8666259058986 3.1558e-05 deg
tp 2459508.270165143264
(2021-Oct-20.77016514)
0.0001794 TDB
period 2005.821262173662
5.49
2.6497e-05
7.254e-08
d
yr
n .1794776068979727 2.3709e-09 deg/d
Q 3.39915814162827 2.9936e-08 au
  Orbit Determination Parameters
   # obs. used (total)      568  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      1999-09-07  
   last obs. used      2019-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53043  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:29:17  

Additional Information
 Earth MOID = 1.82943 au 
 Jupiter MOID = 2.07198 au 
 T_jup = 3.191 
[ 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 14.8   n/a MPO436477  
diameter diameter 3.414 km 0.528 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.219   0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101946 (1999 RR26)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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