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 ]  
49154 (1998 SM53)
Classification: Main-belt Asteroid          SPK-ID: 2049154
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782995652835586 4.886e-08  
a 2.422472874725726 1.4526e-08 au
q 1.990547014250917 1.1847e-07 au
i 7.726727590797166 6.6104e-06 deg
node 337.9232844291044 3.0527e-05 deg
peri 323.9718642409749 3.4855e-05 deg
M 310.2453154931093 1.8691e-05 deg
tp 2459190.834838107290
(2020-Dec-07.33483811)
7.2215e-05 TDB
period 1377.16764557385
3.77
1.2387e-05
3.391e-08
d
yr
n .2614060830989041 2.3512e-09 deg/d
Q 2.854398735200536 1.7116e-08 au
  Orbit Determination Parameters
   # obs. used (total)      618  
   data-arc span      9813 days (26.87 yr)  
   first obs. used      1993-03-25  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55465  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:20:56  

Additional Information
 Earth MOID = .981441 au 
 Jupiter MOID = 2.40886 au 
 T_jup = 3.479 
[ 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 15.7   n/a MPO270384  

49154 (1998 SM53)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20021120/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 2020-Feb-23 20:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin