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4581 Asclepius (1989 FC)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004581
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .357007667930095 7.554e-08  
a 1.022458029677507 7.6689e-09 AU
q .6574326729459403 8.0741e-08 AU
i 4.919255454530932 7.5178e-06 deg
node 180.2866240056563 9.2369e-05 deg
peri 255.298592684214 9.0267e-05 deg
M 20.46624353357231 1.0739e-05 deg
tp 2456979.031470479345
(2014-Nov-17.53147048)
1.1033e-05 JED
period 377.6301505822493
1.03
4.2486e-06
1.163e-08
d
yr
n .9533137103722616 1.0725e-08 deg/d
Q 1.387483386409074 1.0407e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      164  
   # delay obs. used      2  
   # Doppler obs. used      2  
   data-arc span      9272 days (25.39 yr)  
   first obs. used      1989-03-31  
   last obs. used      2014-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51214  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:46:16  

Additional Information
 Earth MOID = .00327134 AU 
 T_jup = 5.914 
[ 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 20.7 mag n/a MPO267726  

4581 Asclepius (1989 FC)          Discovered 1989-Mar-31 by Holt and Thomas at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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