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 ]  
233656 (2008 QA20)
Classification: Main-belt Asteroid          SPK-ID: 2233656
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1671688308961243 6.0784e-08  
a 2.57228956196143 2.146e-08 au
q 2.142282923162034 1.546e-07 au
i 14.9624493240617 5.6509e-06 deg
node 98.32877359923106 2.3082e-05 deg
peri 301.0511868358687 3.0851e-05 deg
M 261.3806522900578 2.6109e-05 deg
tp 2459413.298238047615
(2021-Jul-17.79823805)
0.00011204 TDB
period 1506.878408222932
4.13
1.8857e-05
5.163e-08
d
yr
n .2389044783145772 2.9896e-09 deg/d
Q 3.002296200760826 2.5047e-08 au
  Orbit Determination Parameters
   # obs. used (total)      246  
   data-arc span      9701 days (26.56 yr)  
   first obs. used      1992-12-06  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6098  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 07:22:34  

Additional Information
 Earth MOID = 1.1923 au 
 Jupiter MOID = 2.44267 au 
 T_jup = 3.362 
[ 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 16.1   n/a MPO475906  

233656 (2008 QA20)          Discovered 2008-Aug-30 by Hoenig, S. F., Teamo, N. at Hibiscus
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

[ show close-approach data ]
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-28 03:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin