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 ]  
71115 (1999 XW156)
Classification: Main-belt Asteroid          SPK-ID: 2071115
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03848900321777236 3.793e-08  
a 3.071048441764458 2.5792e-08 au
q 2.952846848407451 1.1968e-07 au
i 9.423321767288613 4.8185e-06 deg
node 245.7011042085178 2.6769e-05 deg
peri 257.2838759049356 7.2444e-05 deg
M 157.9107630045966 6.6134e-05 deg
tp 2457738.241154093420
(2016-Dec-15.74115409)
0.00036161 TDB
period 1965.750646884868
5.38
2.4764e-05
6.78e-08
d
yr
n .1831361472883112 2.3071e-09 deg/d
Q 3.189250035121465 2.6785e-08 au
  Orbit Determination Parameters
   # obs. used (total)      979  
   data-arc span      9300 days (25.46 yr)  
   first obs. used      1993-11-20  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53803  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:36:21  

Additional Information
 Earth MOID = 1.98499 au 
 Jupiter MOID = 1.90662 au 
 T_jup = 3.209 
[ 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 14.0   n/a MPO439543  

71115 (1999 XW156)          Discovered 1999-Dec-08 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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