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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
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 
[ 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 16.1   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

[ 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
1923-Aug-18 16:40 < 00:01 Hebe 0.0470825636250421 0.0470764075445592 0.0470887221222576 6.07047182516731 6.07047180341652 2423650.194745784 0.351879442494031 616.576244342438 32.259922206919 60.2801986172912 189644.764793215 T 19 CATAB v2.0f-lin.ifort 2020-Feb-23 10:39:06 2020-Feb-23 10:39

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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