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 ]  
49961 (1999 XZ226)
Classification: Main-belt Asteroid          SPK-ID: 2049961
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1522144456126155 3.9209e-08  
a 2.288948861607832 8.0108e-09 au
q 1.940537779602569 9.0916e-08 au
i 4.346742690579846 3.8064e-06 deg
node 91.40225278344292 5.6587e-05 deg
peri 247.1783556870545 5.8075e-05 deg
M 323.4725141624354 1.2046e-05 deg
tp 2458728.842307162787
(2019-Sep-02.34230716)
4.2225e-05 TDB
period 1264.889425570268
3.46
6.6403e-06
1.818e-08
d
yr
n .2846098581602863 1.4941e-09 deg/d
Q 2.637359943613096 9.2302e-09 au
  Orbit Determination Parameters
   # obs. used (total)      750  
   data-arc span      8777 days (24.03 yr)  
   first obs. used      1995-10-21  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50615  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:44:22  

Additional Information
 Earth MOID = .935391 au 
 Jupiter MOID = 2.72698 au 
 T_jup = 3.581 
[ 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 16.1   n/a MPO436133  

49961 (1999 XZ226)          Discovered 1999-Dec-15 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XZ226 = 1995 UC33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-28 17:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin