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52948 (1998 SH145)
Classification: Main-belt Asteroid          SPK-ID: 2052948
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2011077274061202 6.7553e-08  
a 2.409199056634492 1.2278e-08 au
q 1.924690509485761 1.6242e-07 au
i 2.771544538122679 6.8348e-06 deg
node 30.09221486314252 9.5121e-05 deg
peri 358.1227348873618 9.5781e-05 deg
M 282.7039030757898 1.3469e-05 deg
tp 2459293.766541447686
(2021-Mar-20.26654145)
5.2451e-05 TDB
period 1365.863984370202
3.74
1.0441e-05
2.859e-08
d
yr
n .2635694359903599 2.0149e-09 deg/d
Q 2.893707603783223 1.4747e-08 au
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      13018 days (35.64 yr)  
   first obs. used      1983-10-08  
   last obs. used      2019-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61362  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:38:54  

Additional Information
 Earth MOID = .929526 au 
 Jupiter MOID = 2.55434 au 
 T_jup = 3.491 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456629.5 (2013-Dec-03.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2012074766530716 6.7556e-08  
q 1.923440212156597 1.6237e-07 au
tp 2456565.619456799864
(2013-Sep-30.11945680)
4.3288e-05 TDB
node 30.21338916315286 9.5009e-05 deg
peri 358.403374077714 9.5669e-05 deg
i 2.774098036051631 6.8388e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      13018 days (35.64 yr)  
   first obs. used      1983-10-08  
   last obs. used      2019-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61362  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:38:54  

Additional Information
 Jupiter MOID = 2.55434 au 
 T_jup = 3.491 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.563814769944414E-15 -1.094993589295055E-14 4.795382335709749E-13 1.910623602812041E-14 -2.558308295328216E-14 -1.243790088905261E-15
q -1.094993589295055E-14 2.636542320148229E-14 -1.054996448567781E-12 -4.574661113978818E-14 8.188871043959587E-14 3.0424339477877E-15
tp 4.795382335709749E-13 -1.054996448567781E-12 1.873889415685699E-9 3.954999890298689E-12 4.897736768967192E-10 -1.458673026401253E-12
node 1.910623602812041E-14 -4.574661113978818E-14 3.954999890298689E-12 9.026791063787479E-9 -9.01492626979856E-9 2.858008138408519E-11
peri -2.558308295328216E-14 8.188871043959587E-14 4.897736768967192E-10 -9.01492626979856E-9 9.1526186394639E-9 -2.892205503521007E-11
i -1.243790088905261E-15 3.0424339477877E-15 -1.458673026401253E-12 2.858008138408519E-11 -2.892205503521007E-11 4.676897806401103E-11

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 16.1   n/a MPO296523  

52948 (1998 SH145)          Discovered 1998-Sep-20 by Elst, E. W. at La Silla
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 SH145 = 1983 TZ = 1998 UM39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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