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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1305969792243054 7.4952e-08  
a 2.554146715292581 1.8386e-08 AU
q 2.220582869779688 1.8878e-07 AU
i 3.787190933756394 7.0155e-06 deg
node 262.5884653508441 9.372e-05 deg
peri 148.5740592931543 9.6597e-05 deg
M 144.0162482828414 2.2305e-05 deg
tp 2456204.047065304227
(2012-Oct-03.54706530)
9.2451e-05 JED
period 1490.964103361253
4.08
1.6099e-05
4.408e-08
d
yr
n .2414545053019118 2.6071e-09 deg/d
Q 2.887710560805474 2.0787e-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 = 1.2313 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 ]
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