Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
90720 (1991 RS19)
Classification: Main-belt Asteroid          SPK-ID: 2090720
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2313869417016629 9.737e-08  
a 2.609165321366874 2.7735e-08 AU
q 2.005438537261756 2.6456e-07 AU
i 5.041451476001355 1.0175e-05 deg
node 325.7533354321108 6.8492e-05 deg
peri 44.03258016207023 7.083e-05 deg
M 173.2128924999124 1.8609e-05 deg
tp 2456259.823549505676
(2012-Nov-28.32354951)
7.2915e-05 JED
period 1539.39766451329
4.21
2.4545e-05
6.72e-08
d
yr
n .2338577018134043 3.7288e-09 deg/d
Q 3.212892105471992 3.4153e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      512  
   data-arc span      8649 days (23.68 yr)  
   first obs. used      1991-09-12  
   last obs. used      2015-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57669  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 19:07:26  

Additional Information
 Earth MOID = 1.00829 AU 
 T_jup = 3.367 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1 mag n/a MPO280374  

90720 (1991 RS19)          Discovered 1991-Sep-14 by Holt, H. E. at Palomar
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Jul-05 21:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin