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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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1119935307550657 5.8473e-08  
a 3.20633577816763 3.8771e-08 AU
q 2.847246913584347 1.9557e-07 AU
i 14.4461032042978 9.3734e-06 deg
node 158.1556359858943 2.5025e-05 deg
peri 268.2387200160405 4.8378e-05 deg
M 310.839011394087 4.2785e-05 deg
tp 2457286.871659106779
(2015-Sep-21.37165911)
0.00025047 JED
period 2097.065177123807
5.74
3.8036e-05
1.041e-07
d
yr
n .1716684840924934 3.1137e-09 deg/d
Q 3.565424642750914 4.3113e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      8459 days (23.16 yr)  
   first obs. used      1991-08-08  
   last obs. used      2014-10-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51394  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:53:45  

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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