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 ]  
49952 (1999 XH212)
Classification: Mars-crossing Asteroid          SPK-ID: 2049952
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2321322544918206 4.561e-08  
a 2.163202191336329 5.7627e-09 au
q 1.66105318973978 9.7558e-08 au
i 3.645343894790424 3.3337e-06 deg
node 119.80620027642 7.712e-05 deg
peri 218.0634265345377 7.7665e-05 deg
M 88.68688849969794 1.0975e-05 deg
tp 2458314.213403338315
(2018-Jul-14.71340334)
3.5073e-05 TDB
period 1162.101597448167
3.18
4.6437e-06
1.271e-08
d
yr
n .309783585867635 1.2379e-09 deg/d
Q 2.665351192932877 7.1004e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1094  
   data-arc span      8714 days (23.86 yr)  
   first obs. used      1995-04-22  
   last obs. used      2019-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51578  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:52:52  

Additional Information
 Earth MOID = .652685 au 
 Jupiter MOID = 2.7193 au 
 T_jup = 3.657 
[ 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 15.7   n/a MPO459192  

49952 (1999 XH212)          Discovered 1999-Dec-14 by LINEAR at Socorro
Reference: 20021120/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 2020-Jan-22 11:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin