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109791 (2001 RL91)
Classification: Main-belt Asteroid          SPK-ID: 2109791
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1908955949290418 4.2964e-08  
a 3.185742355790561 2.265e-08 au
q 2.577598173491275 1.3903e-07 au
i 2.374182571031645 4.1471e-06 deg
node 80.11849461215711 0.00013508 deg
peri 316.9129210026983 0.00013564 deg
M 74.35083095704923 1.332e-05 deg
tp 2458571.558834728936
(2019-Mar-29.05883473)
7.5253e-05 TDB
period 2076.89433339067
5.69
2.2149e-05
6.064e-08
d
yr
n .173335732209484 1.8485e-09 deg/d
Q 3.793886538089848 2.6973e-08 au
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      6813 days (18.65 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54382  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:08:40  

Additional Information
 Earth MOID = 1.58559 au 
 Jupiter MOID = 1.63368 au 
 T_jup = 3.168 
[ 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 15.0   n/a MPO439734  
diameter diameter 5.623 km 1.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109791 (2001 RL91)          Discovered 2001-Sep-11 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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