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
JPL Small-Body Database Browser
Search: [ help ]  
390212 (2012 XS18)
Classification: Main-belt Asteroid          SPK-ID: 2390212
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .1620641138612695 6.6145e-08  
a 2.971935437660972 3.6219e-08 au
q 2.490291354503542 1.8962e-07 au
i 2.074629889014247 9.3148e-06 deg
node 61.06556105692977 0.0001861 deg
peri 294.1772999312514 0.00018819 deg
M 221.7941171044851 2.9237e-05 deg
tp 2459718.925124069318
(2022-May-19.42512407)
0.0001584 TDB
period 1871.360605253569
5.12
3.4209e-05
9.366e-08
d
yr
n .1923733987930243 3.5167e-09 deg/d
Q 3.453579520818401 4.2088e-08 au
  Orbit Determination Parameters
   # obs. used (total)      125  
   data-arc span      10422 days (28.53 yr)  
   first obs. used      1991-10-07  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60969  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:15:45  

Additional Information
 Earth MOID = 1.48661 au 
 Jupiter MOID = 1.98789 au 
 T_jup = 3.241 
[ 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 16.6   n/a MPO434436  

390212 (2012 XS18)          Discovered 2007-Nov-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-03-21

[ show close-approach data ]
Alternate Designations
 2012 XS18 = 2011 OW41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-02 14:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin