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 ]  
173789 (2001 SM98)
Classification: Main-belt Asteroid          SPK-ID: 2173789
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .204918993719055 5.2634e-08  
a 2.781100284845938 3.0762e-08 au
q 2.211200013043531 1.5209e-07 au
i 7.16547285185794 8.567e-06 deg
node 325.5087169932328 5.9823e-05 deg
peri 323.9203563732733 6.3931e-05 deg
M 338.8476031432546 2.5685e-05 deg
tp 2458700.036069319168
(2019-Aug-04.53606932)
0.00012166 TDB
period 1694.038987523697
4.64
2.8107e-05
7.695e-08
d
yr
n .2125098670404503 3.5259e-09 deg/d
Q 3.351000556648345 3.7066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      329  
   data-arc span      6051 days (16.57 yr)  
   first obs. used      2001-08-27  
   last obs. used      2018-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59812  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:09:38  

Additional Information
 Earth MOID = 1.19915 au 
 Jupiter MOID = 1.87771 au 
 T_jup = 3.291 
[ 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 MPO439994  
diameter diameter 4.176 km 0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173789 (2001 SM98)          Discovered 2001-Sep-20 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ 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-12 08:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin