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
JPL Small-Body Database Browser
Search: [ help ]  
74238 (1998 SM48)
Classification: Main-belt Asteroid          SPK-ID: 2074238
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04522239847000911 5.882e-08  
a 2.613787595324534 1.3652e-08 au
q 2.495585851172801 1.5307e-07 au
i 3.190701778241586 6.5429e-06 deg
node 215.1015041049158 6.7894e-05 deg
peri 181.6141178601949 9.0358e-05 deg
M 35.74697410324452 5.5603e-05 deg
tp 2458847.235825426992
(2019-Dec-29.73582543)
0.00023873 TDB
period 1543.490161906462
4.23
1.2092e-05
3.311e-08
d
yr
n .2332376382336906 1.8273e-09 deg/d
Q 2.731989339476268 1.4269e-08 au
  Orbit Determination Parameters
   # obs. used (total)      736  
   data-arc span      10134 days (27.75 yr)  
   first obs. used      1992-04-09  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5599  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:46:49  

Additional Information
 Earth MOID = 1.50201 au 
 Jupiter MOID = 2.45043 au 
 T_jup = 3.405 
[ 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 15.6   n/a MPO395675  

74238 (1998 SM48)          Discovered 1998-Sep-27 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SM48 = 2000 CO46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-13 18:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin