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 ]  
48473 (1991 TU9)
Classification: Main-belt Asteroid          SPK-ID: 2048473
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606337061577555 4.0367e-08  
a 2.373622199253268 9.7574e-09 au
q 1.992338468368893 9.771e-08 au
i 3.274556823930844 4.6961e-06 deg
node 103.1956167214362 7.9262e-05 deg
peri 128.0080391107097 8.0687e-05 deg
M 326.9662524842412 1.5478e-05 deg
tp 2458723.066324783969
(2019-Aug-27.56632478)
5.765e-05 TDB
period 1335.721201513074
3.66
8.2362e-06
2.255e-08
d
yr
n .2695173211237498 1.6619e-09 deg/d
Q 2.754905930137643 1.1325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      981  
   data-arc span      10062 days (27.55 yr)  
   first obs. used      1991-10-06  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53711  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:46:32  

Additional Information
 Earth MOID = .983591 au 
 Jupiter MOID = 2.23805 au 
 T_jup = 3.523 
[ 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 15.6   n/a MPO337645  

48473 (1991 TU9)          Discovered 1991-Oct-06 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 TU9 = 1999 YP11 = 2001 HY9 
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