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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .111993506500638 6.1136e-08  
a 3.206335754894813 4.2207e-08 AU
q 2.847246970685773 2.0012e-07 AU
i 14.44610338153653 9.3792e-06 deg
node 158.1556290441896 2.6775e-05 deg
peri 268.2387206085045 4.9311e-05 deg
M 310.8390235851718 4.3611e-05 deg
tp 2457286.871584973610
(2015-Sep-21.37158497)
0.0002557 JED
period 2097.065154291849
5.74
4.1407e-05
1.134e-07
d
yr
n .1716684859615472 3.3896e-09 deg/d
Q 3.565424539103853 4.6934e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      726  
   data-arc span      8426 days (23.07 yr)  
   first obs. used      1991-08-08  
   last obs. used      2014-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51025  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:21:08  

Additional Information
 Earth MOID = 1.90743 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 12.8 mag n/a MPO231600  

26117 (1991 RX21)          Discovered 1991-Sep-11 by Holt, H. E. at Palomar (675)
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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