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26117 (1991 RX21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2026117
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117728391115889 5.0615e-08  
a 3.205832495571392 3.1531e-08 au
q 2.847507495825188 1.6432e-07 au
i 14.44627507870785 6.7984e-06 deg
node 158.157285564649 2.2569e-05 deg
peri 268.4532207310644 4.0432e-05 deg
M 53.68051922958067 3.0653e-05 deg
tp 2457287.874878023255
(2015-Sep-22.37487802)
0.00017949 JED
period 2096.57144764744
5.74
3.0931e-05
8.468e-08
d
yr
n .171708910947898 2.5333e-09 deg/d
Q 3.564157495317597 3.5055e-08 au
  Orbit Determination Parameters
   # obs. used (total)      959  
   data-arc span      8970 days (24.56 yr)  
   first obs. used      1991-08-08  
   last obs. used      2016-02-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4903  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:52:15  

Additional Information
 Earth MOID = 1.90659 au 
 Jupiter MOID = 1.81911 au 
 T_jup = 3.134 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a MPO365561  

26117 (1991 RX21)          Discovered 1991-Sep-11 by Holt, H. E. at Palomar
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RX21 = 1999 BK23 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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