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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1595063709684951 3.9433e-08  
a 2.59181618101601 9.8535e-09 au
q 2.178404987764722 1.04e-07 au
i 13.53764022632318 4.1288e-06 deg
node 354.3694092252292 1.8378e-05 deg
peri 83.92531522272756 2.4476e-05 deg
M 356.0633349902618 1.3609e-05 deg
tp 2459217.165973292944
(2021-Jan-02.66597329)
5.7605e-05 TDB
period 1524.069325334521
4.17
8.6913e-06
2.38e-08
d
yr
n .2362097274813813 1.347e-09 deg/d
Q 3.005227374267297 1.1425e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1857  
   data-arc span      14918 days (40.84 yr)  
   first obs. used      1980-03-16  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43848  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:02:30  

Additional Information
 Earth MOID = 1.24119 au 
 Jupiter MOID = 2.34424 au 
 T_jup = 3.362 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457070.5 (2015-Feb-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1585589998308189 3.8984e-08  
q 2.181429022282384 1.0253e-07 au
tp 2457688.822442234271
(2016-Oct-27.32244223)
6.016e-05 TDB
node 354.5525145839868 1.8346e-05 deg
peri 83.00017399611161 2.4651e-05 deg
i 13.55119954669908 4.13e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1857  
   data-arc span      14918 days (40.84 yr)  
   first obs. used      1980-03-16  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43848  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:02:30  

Additional Information
 Jupiter MOID = 2.34424 au 
 T_jup = 3.362 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.519721105543729E-15 -3.98455830121861E-15 6.269218521544276E-13 -5.942001807607159E-15 1.889604468438554E-13 -7.876165368127646E-15
q -3.98455830121861E-15 1.051307843186651E-14 -1.730318580795939E-12 1.574344453339186E-14 -5.275295028636562E-13 2.136646229075312E-14
tp 6.269218521544276E-13 -1.730318580795939E-12 3.61916685460377E-9 -7.543076318979066E-12 1.007310362569963E-9 -5.955012984870655E-12
node -5.942001807607159E-15 1.574344453339186E-14 -7.543076318979066E-12 3.365695073357367E-10 -3.287095538987223E-10 -1.044328531465646E-11
peri 1.889604468438554E-13 -5.275295028636562E-13 1.007310362569963E-9 -3.287095538987223E-10 6.076878812890101E-10 8.310827212390543E-12
i -7.876165368127646E-15 2.136646229075312E-14 -5.955012984870655E-12 -1.044328531465646E-11 8.310827212390543E-12 1.705726965812826E-11

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 13.71   n/a E2021B10  
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

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