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JPL Small-Body Database Browser
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382421 (1998 SJ53)
Classification: Main-belt Asteroid          SPK-ID: 2382421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1896346023387996 6.4898e-08  
a 2.378280170363829 1.8422e-08 au
q 1.927275956006631 1.5684e-07 au
i 1.756770894597834 8.7857e-06 deg
node 24.32299445518755 0.000356 deg
peri 19.86375617252025 0.00035836 deg
M 206.4572370592359 4.2616e-05 deg
tp 2459171.873112502525
(2020-Nov-18.37311250)
0.00016351 TDB
period 1339.654937564621
3.67
1.5565e-05
4.261e-08
d
yr
n .2687259158350503 3.1222e-09 deg/d
Q 2.829284384721026 2.1915e-08 au
  Orbit Determination Parameters
   # obs. used (total)      75  
   data-arc span      7098 days (19.43 yr)  
   first obs. used      1998-09-30  
   last obs. used      2018-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57302  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:29:18  

Additional Information
 Earth MOID = .935872 au 
 Jupiter MOID = 2.56779 au 
 T_jup = 3.515 
[ 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 18.1   n/a MPO440655  

382421 (1998 SJ53)          Discovered 1998-Sep-30 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-01-21

[ 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
1956-Jan-10 01:13 00:03 Amphi 0.0272619471973976 0.0272571565170162 0.0272667424637503 2.38759020867464 2.38759012035519 2435482.550868687 2.67456757231295 652.265391774168 95.0248391493223 -70.1567080249267 40367.5326561819 T 10 CATAB v2.0e-lin.ifort 2019-Jul-13 13:29:20 2019-Jul-13 13:29

Alternate Designations
 1998 SJ53 = 2009 WR265 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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