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JPL Small-Body Database Browser
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12924 (1999 RK21)
Classification: Main-belt Asteroid          SPK-ID: 2012924
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696825717191551 4.2602e-08  
a 2.156108051139003 5.4911e-09 au
q 1.790254092117361 9.12e-08 au
i 2.75181494284874 4.9294e-06 deg
node 24.03155044359469 6.7389e-05 deg
peri 299.4982279165341 6.8572e-05 deg
M 92.70412334583659 1.3414e-05 deg
tp 2458302.716411343646
(2018-Jul-03.21641134)
4.2898e-05 TDB
period 1156.389684160709
3.17
4.4175e-06
1.209e-08
d
yr
n .3113137421848267 1.1893e-09 deg/d
Q 2.521962010160644 6.4228e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1349  
   data-arc span      9816 days (26.87 yr)  
   first obs. used      1992-03-07  
   last obs. used      2019-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50796  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:19:40  

Additional Information
 Earth MOID = .779192 au 
 Jupiter MOID = 2.78442 au 
 T_jup = 3.681 
[ 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 15.5   n/a MPO350905  

12924 (1999 RK21)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 19991222/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RK21 = 1998 FD21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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