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 ]  
487699 (2015 RP21)
Classification: Main-belt Asteroid          SPK-ID: 2487699
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1727169813873272 1.2593e-07  
a 2.570328593625715 3.4592e-08 au
q 2.126389197761148 3.397e-07 au
i 8.972888162326948 1.129e-05 deg
node 180.2262719359203 3.9663e-05 deg
peri 176.9421852195842 4.7463e-05 deg
M 308.3011085927238 2.4402e-05 deg
tp 2458816.652432830786
(2019-Nov-29.15243283)
0.00010429 TDB
period 1505.155598135922
4.12
3.0385e-05
8.319e-08
d
yr
n .2391779298072879 4.8284e-09 deg/d
Q 3.014267989490283 4.0567e-08 au
  Orbit Determination Parameters
   # obs. used (total)      120  
   data-arc span      4840 days (13.25 yr)  
   first obs. used      2006-05-23  
   last obs. used      2019-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:19:36  

Additional Information
 Earth MOID = 1.12161 au 
 Jupiter MOID = 2.43541 au 
 T_jup = 3.392 
[ 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 17.6   n/a MPO446846  

487699 (2015 RP21)          Discovered 2007-Sep-14 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2017-03-14

Alternate Designations
 2015 RP21 = 2011 SE250 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin