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 ]  
56242 (1999 JZ55)
Classification: Main-belt Asteroid          SPK-ID: 2056242
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073668195911152 3.5742e-08  
a 2.777112762334108 1.4657e-08 au
q 2.201231721162987 9.6723e-08 au
i 4.707887038218821 4.2262e-06 deg
node 42.6367959741352 5.2967e-05 deg
peri 234.0344784607025 5.402e-05 deg
M 83.01695543542762 1.0663e-05 deg
tp 2458210.689978982204
(2018-Apr-02.18997898)
4.9468e-05 TDB
period 1690.396941568878
4.63
1.3383e-05
3.664e-08
d
yr
n .2129677303284041 1.686e-09 deg/d
Q 3.352993803505228 1.7697e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1003  
   data-arc span      10254 days (28.07 yr)  
   first obs. used      1991-11-06  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54601  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:41:57  

Additional Information
 Earth MOID = 1.18846 au 
 Jupiter MOID = 1.79552 au 
 T_jup = 3.298 
[ 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 15.1   n/a MPO449364  

56242 (1999 JZ55)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JZ55 = 2000 SH286 = 2000 TF22 
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-27 03:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin