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JPL Small-Body Database Browser
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154822 (2004 QC21)
Classification: Main-belt Asteroid          SPK-ID: 2154822
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06678765861069559 4.8602e-08  
a 2.921523495000711 2.3309e-08 au
q 2.726401781193477 1.4129e-07 au
i 1.139927168351192 4.6107e-06 deg
node 209.4000306732858 0.00026087 deg
peri 97.40481335638326 0.00026324 deg
M 80.25135476518295 3.3795e-05 deg
tp 2458593.904681689107
(2019-Apr-20.40468169)
0.00017191 TDB
period 1823.948206484684
4.99
2.1828e-05
5.976e-08
d
yr
n .1973740256001194 2.362e-09 deg/d
Q 3.116645208807945 2.4865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      6882 days (18.84 yr)  
   first obs. used      2000-11-29  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55138  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 18:00:27  

Additional Information
 Earth MOID = 1.71175 au 
 Jupiter MOID = 2.03994 au 
 T_jup = 3.276 
[ 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 15.6   n/a MPO449833  

154822 (2004 QC21)          Discovered 2004-Aug-21 by Spacewatch at Kitt Peak
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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