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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
39561 (1992 QA)
Classification: Mars-crossing Asteroid          SPK-ID: 2039561
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117344116966234 7.1995e-08  
a 1.869783403379992 7.7044e-09 au
q 1.660864254803219 1.3903e-07 au
i 26.23296755583053 4.9913e-06 deg
node 53.8773584023156 1.0866e-05 deg
peri 149.1111820543305 2.9855e-05 deg
M 248.7019220327862 3.2903e-05 deg
tp 2458889.215793404265
(2020-Feb-09.71579340)
8.666e-05 TDB
period 933.8677497750986
2.56
5.772e-06
1.58e-08
d
yr
n .3854935563271117 2.3826e-09 deg/d
Q 2.078702551956766 8.5653e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1179  
   data-arc span      16554 days (45.32 yr)  
   first obs. used      1974-07-13  
   last obs. used      2019-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50765  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 02:31:59  

Additional Information
 Earth MOID = .669534 au 
 Jupiter MOID = 2.92677 au 
 T_jup = 3.852 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO250590  

39561 (1992 QA)          Discovered 1992-Aug-19 by McNaught, R. H. at Siding Spring
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-26 02:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin