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 ]  
392969 (2012 XT21)
Classification: Main-belt Asteroid          SPK-ID: 2392969
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08959467747177183 7.51e-08  
a 2.770132464321024 3.5355e-08 au
q 2.521943339626097 2.1241e-07 au
i 1.826765634825759 6.8289e-06 deg
node 98.06378382783589 0.00025748 deg
peri 270.6137940297755 0.00026056 deg
M 273.8094088056691 4.286e-05 deg
tp 2459403.687065484260
(2021-Jul-08.18706548)
0.00020444 TDB
period 1684.02770607612
4.61
3.224e-05
8.827e-08
d
yr
n .2137732049782128 4.0926e-09 deg/d
Q 3.01832158901595 3.8523e-08 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      7016 days (19.21 yr)  
   first obs. used      2000-02-07  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52369  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:55:48  

Additional Information
 Earth MOID = 1.52171 au 
 Jupiter MOID = 2.42437 au 
 T_jup = 3.331 
[ 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 16.9   n/a MPO434458  

392969 (2012 XT21)          Discovered 2005-Mar-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

Alternate Designations
 2012 XT21 = 2005 EU143 = 2008 YF107 = 2011 OG50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-29 13:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin