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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1301925858023593 7.4681e-08  
a 2.55508042490139 1.8354e-08 au
q 2.222427897450487 1.8811e-07 au
i 3.786298565889794 6.9682e-06 deg
node 262.584129823611 9.3615e-05 deg
peri 148.5088030411529 9.6483e-05 deg
M 288.9087934620306 2.243e-05 deg
tp 2457695.090456370533
(2016-Nov-02.59045637)
9.3313e-05 JED
period 1491.781747110312
4.08
1.6074e-05
4.401e-08
d
yr
n .241322164383192 2.6003e-09 deg/d
Q 2.887732952352293 2.0744e-08 au
  Orbit Determination Parameters
   # obs. used (total)      947  
   data-arc span      10133 days (27.74 yr)  
   first obs. used      1987-09-16  
   last obs. used      2015-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51083  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:57:05  

Additional Information
 Earth MOID = 1.23314 au 
 Jupiter MOID = 2.45971 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
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 2016-Feb-13 06:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin