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JPL Small-Body Database Browser
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100549 (1997 EK38)
Classification: Main-belt Asteroid          SPK-ID: 2100549
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1707382544756008 4.4598e-08  
a 3.065808799962453 2.6609e-08 au
q 2.542357956900927 1.354e-07 au
i 1.64635739585347 5.3693e-06 deg
node 139.9804372798067 0.00020451 deg
peri 296.305358008946 0.00020562 deg
M 173.1477894510155 2.3896e-05 deg
tp 2458057.459211804461
(2017-Oct-30.95921180)
0.0001221 TDB
period 1960.722021498513
5.37
2.5527e-05
6.989e-08
d
yr
n .1836058329802734 2.3904e-09 deg/d
Q 3.589259643023978 3.1153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      689  
   data-arc span      8129 days (22.26 yr)  
   first obs. used      1997-02-06  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54517  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:34:35  

Additional Information
 Earth MOID = 1.55817 au 
 Jupiter MOID = 1.67905 au 
 T_jup = 3.209 
[ 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 14.8   n/a MPO264056  

100549 (1997 EK38)          Discovered 1997-Mar-05 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
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
1913-Oct-10 18:13 00:04 Jupiter 1.71096081316569 1.71095969247006 1.71096193385958 1.79995594103315 1.49990936540628 2420051.259132196 4.35704783828912 151.569746308909 61.1497872390781 -48.9769156924875 952604.705583123 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34
1923-May-10 09:11 00:04 Jupiter 1.94014532070621 1.94014350015886 1.94014714125566 2.23259166843717 2.02763701764932 2423549.882977173 3.7981595265754 166.432238533046 9.00107195382663 83.3224229394828 1715916.07621689 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34
1972-Aug-11 11:25 00:02 Jupiter 1.68432884652439 1.68432840929177 1.68432928375634 1.5818139422541 1.22326071148706 2441540.975373026 1.78197366897509 94.4407481334695 87.5835533078436 -53.7113740105728 1711559.80340287 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34
2021-Nov-20 00:35 < 00:01 Jupiter 1.9104648100559 1.91046411582448 1.91046550428722 3.07974070869108 2.93224897469876 2459538.524348051 0.484574464268053 54.2311297284467 22.5596935232112 88.4719076089513 1952609.30162794 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34
2031-Jun-14 15:06 < 00:01 Jupiter 1.70848240593204 1.70848186642785 1.70848294543554 1.56636541894285 1.20911167151764 2463032.128907656 0.83742723481029 84.8672705830435 76.5428112130166 -88.0133886523413 1835386.9264775 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34
2080-Sep-23 21:41 00:03 Jupiter 1.79899194086381 1.79899099831587 1.79899288341257 2.41333200840748 2.2096397651281 2481031.403330162 2.93285467123932 129.62081427568 8.35170478990498 -89.2377949578755 1552917.51475264 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34
2090-Apr-16 15:30 00:03 Jupiter 1.78083672665883 1.78083537270654 1.7808380806094 1.74029303808523 1.44130369042599 2484523.146024652 3.29761122844593 105.355536599061 42.8680268824711 -66.1624524479073 1226558.40239045 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34
2139-Jul-27 15:23 00:05 Jupiter 1.71300472809246 1.7130036913133 1.71300576487376 1.91281197011366 1.63398828835985 2502521.140885544 5.47389473112593 205.192264698529 37.8906918743552 -67.8310841748666 1313777.12713111 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34
2149-Feb-19 17:21 00:06 Jupiter 1.88873491575955 1.88873226054333 1.88873757097706 2.08005647055866 1.8519488217531 2506016.223069964 5.71718027470627 202.401508789113 9.92343565998105 87.3581610722183 1455835.01810988 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34
2198-May-30 05:22 00:08 Jupiter 1.66908299624319 1.66908259197288 1.66908340051303 1.62069079057374 1.26952081508412 2524012.723444119 7.99299039962482 268.705337000662 81.1384299030516 -51.0829171917303 1526111.25036499 T 13 CATAB v2.0e-lin.ifort 2019-May-30 06:34:40 2019-May-30 06:34

Alternate Designations
 1997 EK38 = 2000 QX23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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