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 ]  
193874 (2001 QA161)
Classification: Main-belt Asteroid          SPK-ID: 2193874
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1511794323290439 5.3851e-08  
a 2.237908766117023 1.0157e-08 au
q 1.89958298925126 1.2021e-07 au
i 1.939875597751903 5.6027e-06 deg
node 339.0171817708663 0.0001544 deg
peri 60.44971588830406 0.00015777 deg
M 47.34100607930066 2.4745e-05 deg
tp 2458439.695952648137
(2018-Nov-17.19595265)
8.4275e-05 TDB
period 1222.818478967269
3.35
8.3252e-06
2.279e-08
d
yr
n .2944018316635498 2.0043e-09 deg/d
Q 2.576234542982785 1.1693e-08 au
  Orbit Determination Parameters
   # obs. used (total)      384  
   data-arc span      6354 days (17.40 yr)  
   first obs. used      2001-08-16  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57394  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:06:58  

Additional Information
 Earth MOID = .907586 au 
 Jupiter MOID = 2.82149 au 
 T_jup = 3.621 
[ 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 17.1   n/a MPO260305  

193874 (2001 QA161)          Discovered 2001-Aug-23 by LONEOS at Anderson Mesa
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin