Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1400860318538709 3.5671e-08  
a 3.24346033321171 1.576e-08 au
q 2.789096845656648 1.1803e-07 au
i .7996024844628434 4.9286e-06 deg
node 12.09470173607985 0.00024178 deg
peri 25.54691672366404 0.0002423 deg
M 12.64597274498267 1.5599e-05 deg
tp 2459321.551826403971
(2021-Apr-17.05182640)
9.2547e-05 TDB
period 2133.591700589066
5.84
1.5551e-05
4.258e-08
d
yr
n .1687295652212216 1.2298e-09 deg/d
Q 3.697823820766772 1.7968e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2057  
   data-arc span      18393 days (50.36 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-08-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48911  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:35:17  

Additional Information
 Earth MOID = 1.79588 au 
 Jupiter MOID = 1.72491 au 
 T_jup = 3.168 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457173.5 (2015-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1453467997113137 3.7901e-08  
q 2.770747303143433 1.2693e-07 au
tp 2457162.322046555924
(2015-May-19.82204656)
8.5734e-05 TDB
node 13.2112345007168 0.0002361 deg
peri 21.09316038240734 0.0002366 deg
i .8177707014925227 4.9516e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2057  
   data-arc span      18393 days (50.36 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-08-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48911  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:35:17  

Additional Information
 Jupiter MOID = 1.72491 au 
 T_jup = 3.168 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.436458709079345E-15 -4.787148124181042E-15 -1.469896738211584E-12 -2.384756359475061E-14 -2.212030287772308E-13 2.962739405925368E-16
q -4.787148124181042E-15 1.611074732804869E-14 4.640837147447747E-12 6.407354859915088E-14 7.04609926896264E-13 -6.330355921616499E-16
tp -1.469896738211584E-12 4.640837147447747E-12 7.350270161243255E-9 -1.773690477485909E-11 1.346960774795024E-9 5.757608159721987E-13
node -2.384756359475061E-14 6.407354859915088E-14 -1.773690477485909E-11 5.574209188591954E-8 -5.573645002751718E-8 -4.021131604007064E-10
peri -2.212030287772308E-13 7.04609926896264E-13 1.346960774795024E-9 -5.573645002751718E-8 5.597883691380774E-8 4.021310182022881E-10
i 2.962739405925368E-16 -6.330355921616499E-16 5.757608159721987E-13 -4.021131604007064E-10 4.021310182022881E-10 2.451795487292892E-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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-17 18:51 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin