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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3570246402860037 8.462e-08  
a 1.022402174580765 8.7288e-09 AU
q .6573794059734392 9.0845e-08 AU
i 4.918984408466133 7.9316e-06 deg
node 180.2986832625888 9.3476e-05 deg
peri 255.3015026434782 9.1085e-05 deg
M 189.7817956671911 1.0052e-05 deg
tp 2456979.039608301591
(2014-Nov-17.53960830)
1.2741e-05 JED
period 377.5992070912949
1.03
4.8357e-06
1.324e-08
d
yr
n .9533918325018096 1.2209e-08 deg/d
Q 1.38742494318809 1.1845e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      148  
   # delay obs. used      2  
   # Doppler obs. used      2  
   data-arc span      8910 days (24.39 yr)  
   first obs. used      1989-03-31  
   last obs. used      2013-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52859  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:03:24  

Additional Information
 Earth MOID = .00347432 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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