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308434 (2005 ST157)
Classification: Main-belt Asteroid          SPK-ID: 2308434
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06012905691863464 5.1155e-08  
a 3.119555107410056 3.9406e-08 au
q 2.931979200795779 1.4845e-07 au
i 11.01926129941231 7.0412e-06 deg
node 24.490703967156 2.6394e-05 deg
peri 65.44772782962556 6.2781e-05 deg
M 176.1599603669966 5.6161e-05 deg
tp 2458015.713417292329
(2017-Sep-19.21341729)
0.00031507 TDB
period 2012.507093190634
5.51
3.8133e-05
1.044e-07
d
yr
n .1788813570983519 3.3894e-09 deg/d
Q 3.307131014024332 4.1775e-08 au
  Orbit Determination Parameters
   # obs. used (total)      230  
   data-arc span      4975 days (13.62 yr)  
   first obs. used      2005-09-26  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62456  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:17:09  

Additional Information
 Earth MOID = 1.96857 au 
 Jupiter MOID = 1.86208 au 
 T_jup = 3.185 
[ 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 15.6   n/a MPO471234  

308434 (2005 ST157)          Discovered 2005-Sep-26 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ 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
1939-May-10 04:05 00:04 Jupiter 1.87152330194951 1.8715227085238 1.87152389537533 4.08673716412023 3.97444984435479 2429393.669844504 4.34022842891341 278.893768075867 26.059926712965 -87.5666139409673 2328899.59249139 T 14 CATAB v2.0f-lin.ifort 2020-Feb-25 18:17:20 2020-Feb-25 18:17
2011-Jan-28 06:19 < 00:01 Jupiter 1.88368687831789 1.88368628523086 1.88368747140513 4.4518807109283 4.34970317964504 2455589.762901345 0.30948974646103 139.963799423467 25.2355004942471 -86.0060860791227 2536627.28980352 T 14 CATAB v2.0f-lin.ifort 2020-Feb-25 18:17:20 2020-Feb-25 18:17
2021-Mar-30 06:11 < 00:01 Jupiter 1.94281804662924 1.94281735504783 1.94281873821076 3.11877174608644 2.9756990296553 2459303.757779526 0.548168983584558 73.8692505665421 25.9645195165543 77.5630261863612 2349524.67378339 T 14 CATAB v2.0f-lin.ifort 2020-Feb-25 18:17:20 2020-Feb-25 18:17
2082-Oct-15 21:45 00:04 Jupiter 1.95277036592972 1.95276887307305 1.95277185878696 4.67328642325629 4.57953026213147 2481783.406105942 3.82082084728364 122.821093018212 57.7845416741045 -67.666234606649 1688667.37891137 T 14 CATAB v2.0f-lin.ifort 2020-Feb-25 18:17:20 2020-Feb-25 18:17
2093-Jan-02 12:12 00:05 Jupiter 1.88091267591979 1.8809116873176 1.88091366452584 3.63339549661649 3.50726564251973 2485515.008677794 4.70865486271447 216.809987852859 38.2328620077045 -77.5776165239951 2153871.71078551 T 14 CATAB v2.0f-lin.ifort 2020-Feb-25 18:17:20 2020-Feb-25 18:17
2164-Sep-29 11:53 00:09 Jupiter 1.85218696362967 1.85218638415518 1.85218754310533 4.08912847052996 3.97572041788322 2511716.995260919 8.63534969729551 536.034132964225 25.3470682165245 -87.8796129749457 2359072.61913765 T 14 CATAB v2.0f-lin.ifort 2020-Feb-25 18:17:20 2020-Feb-25 18:17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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