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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .140086032325148 3.5724e-08  
a 3.243460333096869 1.5768e-08 au
q 2.789096844029325 1.1822e-07 au
i .7996024893619011 4.9348e-06 deg
node 12.09470155181694 0.00024198 deg
peri 25.54691675349632 0.0002425 deg
M 12.64597293961206 1.5619e-05 deg
tp 2459321.551825254452
(2021-Apr-17.05182525)
9.2664e-05 TDB
period 2133.59170047575
5.84
1.5559e-05
4.26e-08
d
yr
n .168729565230183 1.2304e-09 deg/d
Q 3.697823822164412 1.7977e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2040  
   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      .49091  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:35:31  

Additional Information
 Earth MOID = 1.79588 au 
 Jupiter MOID = 1.72491 au 
 T_jup = 3.168 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457167.5 (2015-May-25.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1453524149767406 3.7958e-08  
q 2.770747387188178 1.2714e-07 au
tp 2457162.324078359136
(2015-May-19.82407836)
8.5811e-05 TDB
node 13.21134184282877 0.00023629 deg
peri 21.09351327240422 0.0002368 deg
i .8177743297367863 4.9577e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2040  
   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      .49091  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:35:31  

Additional Information
 Jupiter MOID = 1.72491 au 
 T_jup = 3.168 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.440781757919292E-15 -4.802407288199859E-15 -1.47755196547393E-12 -2.412761528585719E-14 -2.22085506006795E-13 3.017585407087283E-16
q -4.802407288199859E-15 1.616459463699704E-14 4.667854961358803E-12 6.501012821737866E-14 7.077784274225376E-13 -6.508785114270367E-16
tp -1.47755196547393E-12 4.667854961358803E-12 7.36353089184403E-9 -1.732990631674573E-11 1.348552490442395E-9 5.684323248090829E-13
node -2.412761528585719E-14 6.501012821737866E-14 -1.732990631674573E-11 5.583516842313666E-8 -5.582944879979467E-8 -4.045097599673836E-10
peri -2.22085506006795E-13 7.077784274225376E-13 1.348552490442395E-9 -5.582944879979467E-8 5.607205822503312E-8 4.04526097687729E-10
i 3.017585407087283E-16 -6.508785114270367E-16 5.684323248090829E-13 -4.045097599673836E-10 4.04526097687729E-10 2.457922676677677E-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 13.11   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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