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 ]  
35780 (1999 JR18)
Classification: Main-belt Asteroid          SPK-ID: 2035780
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2182868378407745 5.3934e-08  
a 2.560921830094359 1.4157e-08 au
q 2.001906301845652 1.4266e-07 au
i 4.774245556547212 6.6073e-06 deg
node 337.4163504178808 4.2255e-05 deg
peri 324.8689564996168 4.4553e-05 deg
M 348.3524375214781 1.1496e-05 deg
tp 2459048.931225455148
(2020-Jul-18.43122545)
4.7748e-05 TDB
period 1496.900419809188
4.10
1.2413e-05
3.398e-08
d
yr
n .240496959741577 1.9943e-09 deg/d
Q 3.119937358343065 1.7248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1101  
   data-arc span      8218 days (22.50 yr)  
   first obs. used      1997-10-28  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55634  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:08:47  

Additional Information
 Earth MOID = .988927 au 
 Jupiter MOID = 2.13652 au 
 T_jup = 3.396 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO337552  

35780 (1999 JR18)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-07 07:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin