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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1401949831859536 3.9701e-08  
a 3.24462618168389 2.1931e-08 au
q 2.789745868698012 1.2597e-07 au
i .799492369398481 5.106e-06 deg
node 12.09953855969066 0.00030319 deg
peri 25.33794638266617 0.00030361 deg
M 306.0101804953006 1.8389e-05 deg
tp 2459320.650956812386
(2021-Apr-16.15095681)
0.00010986 TDB
period 2134.742170094255
5.84
2.1644e-05
5.926e-08
d
yr
n .1686386323572298 1.7098e-09 deg/d
Q 3.699506494669768 2.5006e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1524  
   data-arc span      17667 days (48.37 yr)  
   first obs. used      1971-03-24  
   last obs. used      2019-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5381  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:26:57  

Additional Information
 Earth MOID = 1.79711 au 
 Jupiter MOID = 1.72191 au 
 T_jup = 3.167 
[ 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 13.0   n/a MPO439112  
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 2020-Jun-02 00:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin