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 ]  
118174 (1991 RO24)
Classification: Mars-crossing Asteroid          SPK-ID: 2118174
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3083496467170154 1.7046e-07  
a 2.317941498184106 1.711e-08 AU
q 1.603205056108328 4.027e-07 AU
i 9.583126319734095 1.3883e-05 deg
node 150.4377016365531 5.1189e-05 deg
peri 179.6785033226916 5.5582e-05 deg
M 218.7955379035752 2.3678e-05 deg
tp 2457506.089508089986
(2016-Apr-27.58950809)
8.9283e-05 JED
period 1288.997671958153
3.53
1.4272e-05
3.907e-08
d
yr
n .2792867728404147 3.0923e-09 deg/d
Q 3.032677940259884 2.2386e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      8571 days (23.47 yr)  
   first obs. used      1991-08-08  
   last obs. used      2015-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .63031  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 17:18:59  

Additional Information
 Earth MOID = .593003 AU 
 T_jup = 3.497 
[ 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 16.3 mag n/a MPO325297  

118174 (1991 RO24)          Discovered 1991-Sep-12 by Holt, H. E. at Palomar (675)
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1991 RO24 = 1998 PK 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Mar-02 12:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin