Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
129244 (2005 QC21)
Classification: Main-belt Asteroid          SPK-ID: 2129244
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2044464157507336 6.5357e-08  
a 2.368904367073172 1.0784e-08 au
q 1.884590359968802 1.5573e-07 au
i 2.303715729181971 4.7144e-06 deg
node 70.03583721854093 0.00016504 deg
peri 276.8864547040847 0.00016534 deg
M 12.13794971382717 1.1401e-05 deg
tp 2458955.598323887630
(2020-Apr-16.09832389)
4.2054e-05 TDB
period 1331.74084434038
3.65
9.0942e-06
2.49e-08
d
yr
n .2703228646398619 1.846e-09 deg/d
Q 2.853218374177542 1.2989e-08 au
  Orbit Determination Parameters
   # obs. used (total)      456  
   data-arc span      15539 days (42.54 yr)  
   first obs. used      1976-10-22  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64349  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:06:21  

Additional Information
 Earth MOID = .879432 au 
 Jupiter MOID = 2.5658 au 
 T_jup = 3.516 
[ 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 16.3   n/a MPO396103  

129244 (2005 QC21)          Discovered 2005-Aug-26 by LONEOS at Anderson Mesa
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2005 QC21 = 1976 UH11 = 2002 YB11 = 2004 HL7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-22 08:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin