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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09126426917942883 5.1135e-08  
a 3.114041150321319 2.8754e-08 au
q 2.829840460542576 1.6319e-07 au
i 9.395851203166142 6.0011e-06 deg
node 343.562304158574 2.8475e-05 deg
peri 28.63161246541214 4.0705e-05 deg
M 305.098469648315 3.162e-05 deg
tp 2459506.602514603040
(2021-Oct-19.10251460)		 0.00017863 TDB
period 2007.173653470159
5.50		 2.78e-05
7.611e-08		 d
yr
n .179356678669832 2.4842e-09 deg/d
Q 3.398241840100062 3.1378e-08 au
   Orbit Determination Parameters
   # obs. used (total)      572  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      1999-09-07  
   last obs. used      2019-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52946  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:32  

Additional Information
 Earth MOID = 1.83138 au 
 Jupiter MOID = 2.07189 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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