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13340 (1998 SM123)
Classification: Main-belt Asteroid          SPK-ID: 2013340
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2400276508836724 4.1356e-08  
a 2.558083275478379 9.493e-09 au
q 1.944072556100493 1.0796e-07 au
i 5.566653191727685 3.4387e-06 deg
node 21.67625915823125 4.6038e-05 deg
peri 253.790101273356 4.6798e-05 deg
M 228.4159989446596 8.7534e-06 deg
tp 2459746.724318370227
(2022-Jun-16.22431837)
3.6666e-05 TDB
period 1494.412337641112
4.09
8.3186e-06
2.278e-08
d
yr
n .240897368773233 1.3409e-09 deg/d
Q 3.172093994856264 1.1772e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2261  
   data-arc span      10132 days (27.74 yr)  
   first obs. used      1993-04-26  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43117  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:11:25  

Additional Information
 Earth MOID = .935094 au 
 Jupiter MOID = 1.99296 au 
 T_jup = 3.389 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456926.5 (2014-Sep-26.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2406476888726995 4.1317e-08  
q 1.941879369901906 1.079e-07 au
tp 2456759.583067288033
(2014-Apr-12.08306729)
3.7893e-05 TDB
node 21.70334015128567 4.6019e-05 deg
peri 253.9017064113529 4.6775e-05 deg
i 5.569341479307585 3.4405e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2261  
   data-arc span      10132 days (27.74 yr)  
   first obs. used      1993-04-26  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43117  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:11:25  

Additional Information
 Jupiter MOID = 1.99296 au 
 T_jup = 3.389 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.707096048925503E-15 -4.448846818641487E-15 9.891546975634581E-13 3.690510923705649E-17 2.038739769883771E-13 -4.996726082039779E-15
q -4.448846818641487E-15 1.164216213788249E-14 -2.613229533973409E-12 -1.528339012574187E-16 -5.395923848023942E-13 1.313686305344668E-14
tp 9.891546975634581E-13 -2.613229533973409E-12 1.435882246197817E-9 3.493779915356325E-12 3.436835145414338E-10 -4.844662713572911E-12
node 3.690510923705649E-17 -1.528339012574187E-16 3.493779915356325E-12 2.117784736270574E-9 -2.106879279200698E-9 -6.064613497857679E-11
peri 2.038739769883771E-13 -5.395923848023942E-13 3.436835145414338E-10 -2.106879279200698E-9 2.187946807220971E-9 5.930396556819456E-11
i -4.996726082039779E-15 1.313686305344668E-14 -4.844662713572911E-12 -6.064613497857679E-11 5.930396556819456E-11 1.183732004387199E-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 14.33   n/a E2021B10  
diameter diameter 8.914 km 0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.65818 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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 1.96470851829345 1.96470821362943 1.96470882295837 1.38707536781176 1.03040804716418 2426049.314024433 1.29326013912464 193.952830270848 121.20683482618 -15.1288026264852 1576998.07498122 T 31 CATAB v2.0f-lin.ifort 2021-Feb-24 02:11:30 2021-Feb-24 02:11
2048-Sep-16 08:26 < 00:01 Jupiter 1.97289802130534 1.97289773171659 1.97289831089487 1.46375835532796 1.13310649944428 2469335.851653946 0.59356651089033 115.17777208756 94.934204435044 -58.2034140992527 2187233.79022274 T 31 CATAB v2.0f-lin.ifort 2021-Feb-24 02:11:30 2021-Feb-24 02:11
2167-Mar-23 18:42 00:02 Jupiter 1.99062157106781 1.9906210725684 1.99062206956642 1.57698388441486 1.27900941081823 2512622.279092195 2.48806032307657 164.274340377237 92.2398643438298 -0.985637025731389 956605.875275143 T 31 CATAB v2.0f-lin.ifort 2021-Feb-24 02:11:30 2021-Feb-24 02:11
2179-Oct-06 08:07 00:03 Jupiter 1.99678912433878 1.99678840513573 1.99678984354636 1.27473748167143 0.881232717689452 2517201.838423326 2.70246958278109 301.932314664901 205.127328232516 51.9520104498016 1695868.37442518 T 31 CATAB v2.0f-lin.ifort 2021-Feb-24 02:11:30 2021-Feb-24 02:11

Alternate Designations
 1998 SM123 = 1993 HF6 = 1997 EG58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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