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JPL Small-Body Database Browser
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11798 Davidsson (1980 FH5)
Classification: Main-belt Asteroid          SPK-ID: 2011798
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1588959574058624 4.2743e-08  
a 2.592729875258498 1.2591e-08 au
q 2.180755579434516 1.1022e-07 au
i 13.53345018967587 5.197e-06 deg
node 354.3962322716001 2.0739e-05 deg
peri 83.74687332386746 2.7499e-05 deg
M 214.4606197256233 1.7262e-05 deg
tp 2459216.970579828073
(2021-Jan-02.47057983)		 7.411e-05 TDB
period 1524.875317729924
4.17		 1.1108e-05
3.041e-08		 d
yr
n .2360848758021283 1.7197e-09 deg/d
Q 3.004704171082479 1.4592e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1437  
   data-arc span      14415 days (39.47 yr)  
   first obs. used      1980-03-16  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4828  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:10:30  

Additional Information
 Earth MOID = 1.24367 au 
 Jupiter MOID = 2.3465 au 
 T_jup = 3.362 
[ 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 13.6   n/a MPO350895  
diameter diameter 4.714 km 0.914 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.417   0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11798 Davidsson           Discovered 1980 Mar. 16 by C.-I. Lagerkvist at the European Southern Observatory.
The Ph.D. work of Björn Davidsson (b. 1974) at Uppsala University opened up new insights about the outgassing mechanism and splitting mechanics of cometary nuclei.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1980 FH5 = 1986 QE3 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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