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 ]  
13340 (1998 SM123)
Classification: Main-belt Asteroid          SPK-ID: 2013340
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .240115105580652 4.1825e-08  
a 2.557995694243176 9.6821e-09 au
q 1.943782288045123 1.0895e-07 au
i 5.566687744099513 3.5693e-06 deg
node 21.68706559943504 4.6162e-05 deg
peri 253.7544242766252 4.6986e-05 deg
M 180.2778897056297 8.7896e-06 deg
tp 2459746.514294615036
(2022-Jun-16.01429462)
3.6789e-05 TDB
period 1494.335591884187
4.09
8.4842e-06
2.323e-08
d
yr
n .2409097407270351 1.3678e-09 deg/d
Q 3.17220910044123 1.2007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2171  
   data-arc span      9749 days (26.69 yr)  
   first obs. used      1993-04-26  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43632  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:05:45  

Additional Information
 Earth MOID = .936611 au 
 Jupiter MOID = 1.99358 au 
 T_jup = 3.389 
[ 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 14.3   n/a MPO358759  
diameter diameter 8.914 km 0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13340 (1998 SM123)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20000124/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1930-Mar-13 19:32 00:01 Jupiter 1.96470850590376 1.96470818891544 1.96470882289298 1.38707531584912 1.03040797457665 2426049.313994708 1.32138874426038 194.848721176272 124.054877735574 -15.2443564642043 1563807.36733943 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:06:20 2020-Jan-28 23:06
2048-Sep-16 08:26 < 00:01 Jupiter 1.97289800480553 1.97289769946909 1.97289831014264 1.46375825768487 1.13310637013916 2469335.851671208 0.615706432066163 115.917086260129 100.900523468727 -53.2845075683596 2056400.57644909 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:06:20 2020-Jan-28 23:06
2167-Mar-23 18:42 00:03 Jupiter 1.99062153486068 1.99062100270597 1.99062206701449 1.57698349831884 1.27900892872114 2512622.279179086 2.56025281147477 172.617613419908 93.6899644847768 1.28087126849115 909432.829044616 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:06:20 2020-Jan-28 23:06
2179-Oct-06 08:07 00:03 Jupiter 1.99678914508203 1.99678841814627 1.99678987202256 1.27473748058096 0.881232721112581 2517201.838508851 2.77993643434977 304.544220534524 212.242332268898 53.9278133845602 1668642.14288027 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:06:20 2020-Jan-28 23:06

Alternate Designations
 1998 SM123 = 1993 HF6 = 1997 EG58 
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-21 00:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin