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 ]  
46950 (1998 SA118)
Classification: Main-belt Asteroid          SPK-ID: 2046950
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1061063577620533 3.8695e-08  
a 2.692819701842394 1.6051e-08 au
q 2.407094411169999 1.0362e-07 au
i 8.635260963652051 5.2847e-06 deg
node 4.607627924558255 2.988e-05 deg
peri 66.88890889993216 3.9499e-05 deg
M 192.8144907125067 2.6352e-05 deg
tp 2459350.058395352960
(2021-May-15.55839535)
0.00012038 TDB
period 1614.021594796503
4.42
1.4431e-05
3.951e-08
d
yr
n .2230453428632032 1.9943e-09 deg/d
Q 2.978544992514788 1.7754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1202  
   data-arc span      8452 days (23.14 yr)  
   first obs. used      1996-03-17  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49137  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:34:38  

Additional Information
 Earth MOID = 1.43619 au 
 Jupiter MOID = 2.29848 au 
 T_jup = 3.347 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456347.5 (2013-Feb-24.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1077889473647737 3.87e-08  
q 2.399669465093551 1.0397e-07 au
tp 2456120.974171550886
(2012-Jul-12.47417155)
0.00011055 TDB
node 4.736101052252895 2.9811e-05 deg
peri 65.86686591642398 3.9219e-05 deg
i 8.651007561495506 5.2912e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1202  
   data-arc span      8452 days (23.14 yr)  
   first obs. used      1996-03-17  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49137  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:34:38  

Additional Information
 Jupiter MOID = 2.29848 au 
 T_jup = 3.347 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.49766945604143E-15 -3.986970600391382E-15 6.044606502543327E-14 6.378992117024932E-16 1.87475186749694E-15 -2.22046905344782E-15
q -3.986970600391382E-15 1.081062541628875E-14 9.696875154285232E-14 -2.824362465121255E-15 5.850392468634811E-14 6.460406236991058E-15
tp 6.044606502543327E-14 9.696875154285232E-14 1.222193793122477E-8 4.310144514406542E-12 2.836642771854657E-9 -3.170179894153806E-12
node 6.378992117024932E-16 -2.824362465121255E-15 4.310144514406542E-12 8.886685242899833E-10 -8.771034803723736E-10 -2.733065874387764E-11
peri 1.87475186749694E-15 5.850392468634811E-14 2.836642771854657E-9 -8.771034803723736E-10 1.538158507946495E-9 2.630216955350981E-11
i -2.22046905344782E-15 6.460406236991058E-15 -3.170179894153806E-12 -2.733065874387764E-11 2.630216955350981E-11 2.799704542677068E-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 13.6   n/a MPO296485  

46950 (1998 SA118)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
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-14 16:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin