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 ]  
146778 (2001 XX231)
Classification: Main-belt Asteroid          SPK-ID: 2146778
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03454985051478152 4.708e-08  
a 2.766738042673337 1.8902e-08 au
q 2.671147656885414 1.2305e-07 au
i 5.834851342310215 4.4587e-06 deg
node 58.01878622053655 4.6458e-05 deg
peri 164.5322044493383 8.1431e-05 deg
M 133.2864843814945 6.7398e-05 deg
tp 2457978.150848736634
(2017-Aug-12.65084874)
0.00031519 TDB
period 1680.933333146854
4.60
1.7226e-05
4.716e-08
d
yr
n .2141667327912693 2.1948e-09 deg/d
Q 2.86232842846126 1.9556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      10265 days (28.10 yr)  
   first obs. used      1991-09-30  
   last obs. used      2019-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59492  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 13:01:22  

Additional Information
 Earth MOID = 1.66193 au 
 Jupiter MOID = 2.10698 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 15.5   n/a MPO453934  

146778 (2001 XX231)          Discovered 2001-Dec-15 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ 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-05 19:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin