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JPL Small-Body Database Browser
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212102 (2005 EH154)
Classification: Main-belt Asteroid          SPK-ID: 2212102
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1939127173179551 7.3774e-08  
a 2.561903168510252 1.8468e-08 au
q 2.06511756359895 1.9656e-07 au
i 12.72909020587297 7.2374e-06 deg
node 4.13860618010691 2.5691e-05 deg
peri 177.7622441126996 3.1691e-05 deg
M 161.0066496813804 2.1719e-05 deg
tp 2457930.640369766217
(2017-Jun-26.14036977)
8.5088e-05 TDB
period 1497.760914604321
4.10
1.6196e-05
4.434e-08
d
yr
n .2403587892364683 2.599e-09 deg/d
Q 3.058688773421554 2.2049e-08 au
  Orbit Determination Parameters
   # obs. used (total)      343  
   data-arc span      6818 days (18.67 yr)  
   first obs. used      2001-03-18  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53958  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 15:04:25  

Additional Information
 Earth MOID = 1.06833 au 
 Jupiter MOID = 1.90209 au 
 T_jup = 3.374 
[ 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 16.2   n/a MPO454522  
diameter diameter 3.548 km 0.804 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212102 (2005 EH154)          Discovered 2005-Mar-08 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

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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
1986-Jun-28 14:30 < 00:01 Jupiter 1.99059181740325 1.99059075616499 1.99059287890243 3.62222592135576 3.50278386521105 2446610.104036215 0.997181131844408 1514.38226456677 24.3695322394877 88.3436293664477 1654264.22737843 T 14 CATAB v2.0f-lin.ifort 2019-Dec-14 15:04:29 2019-Dec-14 15:04
1999-Jan-29 03:00 < 00:01 Jupiter 1.89394026666361 1.89393975606419 1.89394077726551 3.60895087590095 3.48282515497626 2451207.625106321 0.590176834525695 884.958574322101 20.6775238115134 -89.3217851282581 2337085.02526128 T 14 CATAB v2.0f-lin.ifort 2019-Dec-14 15:04:29 2019-Dec-14 15:04
2105-Oct-23 01:23 00:02 Jupiter 1.89634472268816 1.89634415336029 1.89634529207813 3.60690191702665 3.480864862713 2490190.557638043 2.40868196847916 1353.25845922097 21.9715196475853 -89.3658009284066 1942477.10942204 T 14 CATAB v2.0f-lin.ifort 2019-Dec-14 15:04:29 2019-Dec-14 15:04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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