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4985 Fitzsimmons (1979 QK4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2004985
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1400355226392098 3.5727e-08  
a 3.243308967305125 1.5855e-08 au
q 2.789130500988116 1.1827e-07 au
i .7995838241956118 4.9349e-06 deg
node 12.09441200024556 0.00024201 deg
peri 25.49709566008292 0.00024253 deg
M 339.6109404433209 1.5659e-05 deg
tp 2459321.330230734687
(2021-Apr-16.83023073)
9.2647e-05 TDB
period 2133.44234654696
5.84
1.5644e-05
4.283e-08
d
yr
n .1687413773250872 1.2373e-09 deg/d
Q 3.697487433622134 1.8075e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2039  
   data-arc span      18223 days (49.89 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48924  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:01:02  

Additional Information
 Earth MOID = 1.79547 au 
 Jupiter MOID = 1.72434 au 
 T_jup = 3.168 
[ 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 13.11   n/a E2021B10  
diameter diameter 11.839 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.087   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4985 Fitzsimmons (1979 QK4)          Discovered 1979-Aug-23 by Lagerkvist, C.-I. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1979 QK4 = 1974 WT = 1985 PY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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