Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456678.5 (2014-Jan-21.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1906739874464814 6.497e-08  
q 1.924109455093404 1.5697e-07 au
tp 2456495.344652942693
(2013-Jul-21.84465294)
0.0001408 TDB
node 24.37218808930554 0.00035552 deg
peri 20.01349207957475 0.00035784 deg
i 1.758940475986689 8.7912e-06 deg
  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
 Jupiter MOID = 2.56779 au 
 T_jup = 3.515 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.221108422364823E-15 -1.015592950195441E-14 -2.111153164635701E-12 5.556890624473238E-14 -6.214896609620561E-13 -1.487563937322531E-15
q -1.015592950195441E-14 2.464062255469293E-14 6.260986145091033E-12 -1.27072351722139E-13 1.832039558092428E-12 3.829713883368848E-15
tp -2.111153164635701E-12 6.260986145091033E-12 1.982502593315957E-8 -6.498800599740162E-11 5.878507653057594E-9 6.864152542795316E-12
node 5.556890624473238E-14 -1.27072351722139E-13 -6.498800599740162E-11 1.263912297376787E-7 -1.263487101120513E-7 -1.289447646043084E-9
peri -6.214896609620561E-13 1.832039558092428E-12 5.878507653057594E-9 -1.263487101120513E-7 1.280518429251223E-7 1.290850186873472E-9
i -1.487563937322531E-15 3.829713883368848E-15 6.864152542795316E-12 -1.289447646043084E-9 1.290850186873472E-9 7.728537854751222E-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 18.1   n/a MPO440655  

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

[ show close-approach data ]
Alternate Designations
 1998 SJ53 = 2009 WR265 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-05 18:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin