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4788 Simpson (1986 TL1)
Classification: Main-belt Asteroid          SPK-ID: 2004788
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1294431141071192 3.7157e-08  
a 2.262616722610665 7.6523e-09 au
q 1.969736568005097 8.4322e-08 au
i 4.318781698548895 3.6665e-06 deg
node 277.1765350386747 5.3706e-05 deg
peri 110.3184751673674 5.5729e-05 deg
M 316.5134756870345 1.6882e-05 deg
tp 2459150.664444133930
(2020-Oct-28.16444413)
5.8669e-05 TDB
period 1243.125330025444
3.40
6.3065e-06
1.727e-08
d
yr
n .2895926832997856 1.4691e-09 deg/d
Q 2.555496877216233 8.6428e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1789  
   data-arc span      15937 days (43.63 yr)  
   first obs. used      1976-12-16  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48642  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:20:08  

Additional Information
 Earth MOID = .979429 au 
 Jupiter MOID = 2.87622 au 
 T_jup = 3.604 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO324351  
diameter diameter 3.583 km 0.702 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.500   0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4788 Simpson (1986 TL1)          Discovered 1986-Oct-04 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1986 TL1 = 1976 YJ1 = 1979 RN1 = 1984 AS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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