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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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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 
[ 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1984-Sep-03 16:45 < 00:01 Jupiter 1.90061207164102 1.90061156357704 1.9006125797049 2.99093909115429 2.83802768392516 2445947.197620449 0.866469597876875 46.3881080108927 15.6411703776522 87.2525698142287 2647922.8416579 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35
1995-Dec-31 22:32 < 00:01 Jupiter 1.80989379994339 1.80989341484477 1.80989418504191 2.44959967490068 2.25045488123346 2450083.439181484 0.578416536104566 52.3969376237498 6.68809674685745 88.3899876525625 3200632.46794274 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35
2007-May-26 13:21 < 00:01 Jupiter 1.74614829125598 1.74614797725748 1.74614860525438 2.10348785732418 1.85862856357913 2454247.056457338 0.336200558422887 54.3671248202671 5.75583799391185 87.3001075117577 3489114.87042955 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35
2018-Nov-12 18:21 < 00:01 Jupiter 1.7150962995562 1.71509600147514 1.71509659763716 1.92222573059632 1.64536496480759 2458435.264547885 0.299820571419271 53.0009638781429 13.4224830491756 86.8034214137417 3346898.15918436 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35
2030-May-16 13:27 < 00:01 Jupiter 1.70928454034161 1.70928422649519 1.70928485418793 1.8512175794173 1.56074413519332 2462638.060248808 0.525126612048069 51.6219643693058 18.0878175954366 87.4470426887429 3189151.418881 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35
2041-Nov-22 03:28 < 00:01 Jupiter 1.72822646245204 1.72822609101897 1.72822683388502 1.87190305879854 1.58864703302328 2466845.644242688 0.861613143632939 54.1937565142976 16.2027056604549 88.465930460324 3073838.40256145 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35
2053-May-25 12:04 00:01 Jupiter 1.76852443807313 1.76852393370543 1.76852494244092 1.97981616500807 1.72098399803389 2471048.002920880 1.27661602980502 67.0599654040532 9.60312005270796 88.4521456340609 2955267.62982448 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35
2064-Nov-11 14:15 00:02 Jupiter 1.83466846967993 1.83466774631567 1.83466919304502 2.19608955534865 1.97470433594798 2475236.093768360 1.75746326289142 91.581214664574 2.23192051940064 85.1061832893753 2951799.38664066 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35
2076-Apr-13 01:02 00:02 Jupiter 1.9226244740034 1.92262350019167 1.92262544781677 2.53362034585563 2.35332134298335 2479406.542866804 2.27474992086082 116.679908060009 7.98307360616855 79.7414761895706 3017039.9753158 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35
2199-Aug-09 18:42 00:05 Jupiter 1.97819281247163 1.97819091571666 1.97819470923121 3.81143381478965 3.69738661932976 2524449.279311622 4.75315307706341 184.885442401485 18.2471503412703 67.2273538229582 3115957.13288296 T 29 CATAB v2.0g-lin.ifort 2021-Aug-25 21:35:39 2021-Aug-25 21:35

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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