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

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1301179099628971 7.4058e-08  
a 2.555068877161088 1.8304e-08 au
q 2.222608655053641 1.8653e-07 au
i 3.786291230568791 6.8998e-06 deg
node 262.5759388223362 9.3174e-05 deg
peri 148.4899542929907 9.5988e-05 deg
M 337.1899906526488 2.2389e-05 deg
tp 2457695.020346982398
(2016-Nov-02.52034698)
9.2917e-05 JED
period 1491.771633912756
4.08
1.603e-05
4.389e-08
d
yr
n .2413238003834131 2.5932e-09 deg/d
Q 2.887529099268535 2.0686e-08 au
  Orbit Determination Parameters
   # obs. used (total)      955  
   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      .51093  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:24:53  

Additional Information
 Earth MOID = 1.23289 au 
 Jupiter MOID = 2.45838 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 ]
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