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213001 (1981 EP3)
Classification: Main-belt Asteroid          SPK-ID: 2213001
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1627671795283103 5.4031e-08  
a 3.146940462293989 3.1144e-08 au
q 2.634721839102879 1.6141e-07 au
i 9.03569081507054 5.3157e-06 deg
node 228.7430297526655 3.1997e-05 deg
peri 301.8812034392715 3.7877e-05 deg
M 59.68469961915229 1.5684e-05 deg
tp 2458862.441602612670
(2020-Jan-13.94160261)
8.9978e-05 TDB
period 2039.065687454445
5.58
3.027e-05
8.287e-08
d
yr
n .1765514481534047 2.6209e-09 deg/d
Q 3.659159085485098 3.6213e-08 au
  Orbit Determination Parameters
   # obs. used (total)      263  
   data-arc span      14374 days (39.35 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59298  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:40:56  

Additional Information
 Earth MOID = 1.65319 au 
 Jupiter MOID = 1.42959 au 
 T_jup = 3.169 
[ 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 15.94   n/a E2021B55  
diameter diameter 5.316 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.025   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

213001 (1981 EP3)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ 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
1928-Dec-30 00:29 00:04 Jupiter 1.60065840899625 1.60065589810925 1.60066091991436 2.99113161204195 2.80865193564193 2425610.520048621 4.16010876492339 398.437371960209 31.7199087123261 77.0037078489883 2180280.96959253 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:40:57 2021-Apr-13 23:40
1939-May-23 16:46 00:04 Jupiter 1.46817015991614 1.46816909218295 1.46817122766361 1.40216339245343 0.901229328208737 2429407.198812458 3.9282315261177 1255.91069860943 211.820159357961 -12.5927399789618 640881.369651247 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:40:57 2021-Apr-13 23:40
1949-Jul-28 01:02 00:03 Jupiter 1.88219684461424 1.88219519738732 1.88219849183912 2.5573138279448 2.37483009073565 2433125.543130240 3.18059290417215 78.805168507261 27.6967818906867 -89.503270857557 570597.242393269 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:40:57 2021-Apr-13 23:40
2023-Aug-11 08:53 < 00:01 Jupiter 1.49118803607658 1.49118733915659 1.49118873299732 2.69775359844278 2.4782730514255 2460167.870251536 0.701005966420828 113.883096251704 31.4374169754541 86.6221851553827 1934503.30937476 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:40:57 2021-Apr-13 23:40
2033-Dec-23 00:03 00:02 Jupiter 1.53770862153329 1.53770740212528 1.53770984095195 1.19445575696122 0.570136947363374 2463954.501926090 1.61807738002221 2171.9513972195 335.308713384306 10.4757389051344 1030258.11045644 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:40:57 2021-Apr-13 23:40
2107-Oct-21 00:38 00:05 Jupiter 1.89594032140363 1.89593593532631 1.8959447074831 3.68606092361216 3.56279852739765 2490918.526401122 4.83780701291133 245.47257442985 61.7885983596916 37.3765418112844 1179888.082284 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:40:57 2021-Apr-13 23:40
2118-Mar-29 19:16 00:05 Jupiter 1.41567436556788 1.41567317491951 1.41567555631178 2.48536435417425 2.23168127351067 2494731.302959628 5.24933985542418 695.740999661731 36.6183258733379 -89.2202104090816 1689065.24834956 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:40:57 2021-Apr-13 23:40
2128-Jul-23 20:00 00:08 Jupiter 1.6402454627681 1.64024101637293 1.64024990928028 1.18150303651784 0.602619054681499 2498500.333104509 7.54951474607561 1694.55928933304 987.191966092569 -39.0946211814116 812014.71645941 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:40:57 2021-Apr-13 23:40
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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