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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1906708949595171 4.9607e-08  
a 3.185501111866668 2.5478e-08 au
q 2.578118763972514 1.6483e-07 au
i 2.374362026134002 4.2218e-06 deg
node 80.12007853671504 0.00015088 deg
peri 316.9601185916428 0.00015144 deg
M 4.992962313631035 1.4871e-05 deg
tp 2458571.698118736406
(2019-Mar-29.19811874)
8.562e-05 TDB
period 2076.658425117022
5.69
2.4914e-05
6.821e-08
d
yr
n .1733554231383592 2.0798e-09 deg/d
Q 3.792883459760823 3.0336e-08 au
  Orbit Determination Parameters
   # obs. used (total)      652  
   data-arc span      6621 days (18.13 yr)  
   first obs. used      2001-08-24  
   last obs. used      2019-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5535  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 12:54:01  

Additional Information
 Earth MOID = 1.58552 au 
 Jupiter MOID = 1.63252 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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