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 ]  
59488 (1999 JE2)
Classification: Main-belt Asteroid          SPK-ID: 2059488
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2355141131608237 9.5844e-08  
a 2.547614796773995 1.5271e-08 au
q 1.947615557236375 2.5047e-07 au
i 15.22485835984599 1.1844e-05 deg
node 182.8416430987087 1.3058e-05 deg
peri 129.42706120 2.8444e-05 deg
M 349.9740305348625 2.052e-05 deg
tp 2459041.864039832242
(2020-Jul-11.36403983)
8.4554e-05 TDB
period 1485.248323504946
4.07
1.3354e-05
3.656e-08
d
yr
n .2423837107255292 2.1793e-09 deg/d
Q 3.147614036311615 1.8867e-08 au
  Orbit Determination Parameters
   # obs. used (total)      999  
   data-arc span      7327 days (20.06 yr)  
   first obs. used      1999-04-07  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53635  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:38:59  

Additional Information
 Earth MOID = .971498 au 
 Jupiter MOID = 2.34902 au 
 T_jup = 3.355 
[ 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 14.8   n/a MPO436197  
diameter diameter 6.983 km 0.433 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59488 (1999 JE2)          Discovered 1999-May-08 by CSS at Catalina
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JE2 = 2000 SZ87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-20 08:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin