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 ]  
357021 (1999 XT224)
Classification: Main-belt Asteroid          SPK-ID: 2357021
[ 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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1807109893271908 5.6358e-08  
a 2.627032344762529 2.609e-08 au
q 2.152298730745963 1.4735e-07 au
i 12.29637572075461 1.1925e-05 deg
node 285.8185290704297 3.3418e-05 deg
peri 120.309731707304 5.652e-05 deg
M 239.5865020596167 4.4223e-05 deg
tp 2459120.698659393151
(2020-Sep-28.19865939)		 0.00019502 TDB
period 1555.236917660615
4.26		 2.3169e-05
6.343e-08		 d
yr
n .2314759866564326 3.4484e-09 deg/d
Q 3.101765958779096 3.0805e-08 au
   Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      7117 days (19.49 yr)  
   first obs. used      1999-12-05  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60613  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:42:25  

Additional Information
 Earth MOID = 1.19177 au 
 Jupiter MOID = 2.33273 au 
 T_jup = 3.346 
[ 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 16.7   n/a MPO402434  

357021 (1999 XT224)          Discovered 1999-Dec-13 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

[ 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 2019-Dec-11 00:44 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin