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 ]  
7523 (1991 PF18)
Classification: Main-belt Asteroid          SPK-ID: 2007523
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1304419349582586 7.4944e-08  
a 2.554484289707132 1.8354e-08 AU
q 2.221272416137261 1.8878e-07 AU
i 3.787072842444448 7.0152e-06 deg
node 262.5893981625832 9.3718e-05 deg
peri 148.5672161138189 9.6602e-05 deg
M 192.3132935579259 2.2355e-05 deg
tp 2457695.123408885938
(2016-Nov-02.62340889)
9.3262e-05 JED
period 1491.259697949404
4.08
1.6072e-05
4.4e-08
d
yr
n .2414066446609049 2.6018e-09 deg/d
Q 2.887696163277003 2.0748e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      902  
   data-arc span      9779 days (26.77 yr)  
   first obs. used      1987-09-16  
   last obs. used      2014-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51697  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:17:12  

Additional Information
 Earth MOID = 1.23278 AU 
 T_jup = 3.423 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO256919  

7523 (1991 PF18)          Discovered 1991-Aug-08 by Holt, H. E. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 PF18 = 1983 RG7 = 1987 SP17 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-01 05:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin