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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120937251818781 7.827e-08  
a 3.20698500355875 5.8272e-08 AU
q 2.847502107907431 2.3651e-07 AU
i 14.44499160428732 1.0016e-05 deg
node 158.1549864147857 3.1519e-05 deg
peri 268.1551890432202 5.472e-05 deg
M 276.6004324012981 4.8851e-05 deg
tp 2457286.465142018212
(2015-Sep-20.96514202)
0.00029 JED
period 2097.70213639908
5.74
5.7174e-05
1.565e-07
d
yr
n .1716163576102262 4.6775e-09 deg/d
Q 3.566467899210069 6.4803e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      694  
   data-arc span      7593 days (20.79 yr)  
   first obs. used      1991-08-08  
   last obs. used      2012-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .517  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 20:59:45  

Additional Information
 Earth MOID = 1.90707 AU 
 T_jup = 3.133 
[ 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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