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 ]  
442381 (2011 UA9)
Classification: Main-belt Asteroid          SPK-ID: 2442381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3324423380994139 8.9435e-08  
a 2.602792493737834 3.7273e-08 au
q 1.737514071532025 2.5319e-07 au
i 3.635375446651552 6.0405e-06 deg
node 220.4143377018538 6.9645e-05 deg
peri 121.3306098812939 7.1049e-05 deg
M 316.8349559208975 7.741e-06 deg
tp 2458784.402415343505
(2019-Oct-27.90241534)
3.4234e-05 TDB
period 1533.761193486502
4.20
3.2946e-05
9.02e-08
d
yr
n .2347171134129807 5.0418e-09 deg/d
Q 3.468070915943644 4.9664e-08 au
  Orbit Determination Parameters
   # obs. used (total)      338  
   data-arc span      4875 days (13.35 yr)  
   first obs. used      2006-04-30  
   last obs. used      2019-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42737  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:05  

Additional Information
 Earth MOID = .732116 au 
 Jupiter MOID = 1.97081 au 
 T_jup = 3.331 
[ 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 17.0   n/a MPO440831  

442381 (2011 UA9)          Discovered 2006-Apr-30 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1908-May-06 08:48 00:07 Jupiter 1.99978055934033 1.99977812314621 1.99978299554394 0.751887979863256 n/a 2418067.866354421 6.70340876290834 277.789614329697 60.0080715806646 -67.0803936661298 4609716.95533252 F 15 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:07 2019-Sep-24 07:43
1979-Sep-05 10:12 00:02 Jupiter 1.98030542593257 1.98030443995394 1.98030641191248 0.62494183991362 n/a 2444121.925300612 2.20546791301845 149.768719159675 40.6624071963928 -78.9450403206701 7158684.40502755 F 15 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:07 2019-Sep-24 07:43
2051-Jan-04 03:57 00:02 Jupiter 1.96464809654425 1.96464749587027 1.96464869721928 0.537729761468873 n/a 2470175.664708468 2.2993587490256 170.919137845592 27.0994471825434 -85.6636737182425 10812593.8753592 F 15 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:07 2019-Sep-24 07:43
2122-May-05 08:54 00:07 Jupiter 1.96013486381226 1.960134061345 1.96013566629709 0.511206474668613 n/a 2496228.870959466 6.70034108078021 366.196886526544 23.8089308577352 -84.9505793691352 12265445.0783091 F 15 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:07 2019-Sep-24 07:43
2193-Sep-02 18:12 00:11 Jupiter 1.95778601775348 1.95778539810681 1.95778663742368 0.524485253419495 n/a 2522282.258510719 11.0966928706751 516.021564995 23.2994788460974 -87.7435541847745 12557460.575544 F 15 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:07 2019-Sep-24 07:43

Alternate Designations
 2011 UA9 = 2006 HH96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-11 17:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin