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13237 (1998 HC98)
Classification: Main-belt Asteroid          SPK-ID: 2013237
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2170474172745441 3.9095e-08  
a 2.154645618750422 7.4237e-09 au
q 1.686985352058731 8.7951e-08 au
i 5.15958267704736 5.3875e-06 deg
node 2.903457841097637 3.6406e-05 deg
peri 287.119195736062 3.8845e-05 deg
M 305.7471707550371 1.2468e-05 deg
tp 2459174.593314309557
(2020-Nov-21.09331431)		 4.0147e-05 TDB
period 1155.213359813108
3.16		 5.9703e-06
1.635e-08		 d
yr
n .3116307450411077 1.6106e-09 deg/d
Q 2.622305885442113 9.035e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1169  
   data-arc span      11222 days (30.72 yr)  
   first obs. used      1989-10-03  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47549  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:47:42  

Additional Information
 Earth MOID = .680092 au 
 Jupiter MOID = 2.57942 au 
 T_jup = 3.666 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456947.5 (2014-Oct-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2174162262495795 3.9129e-08  
q 1.686333347611315 8.808e-08 au
tp 2456863.733357030073
(2014-Jul-25.23335703)		 3.9802e-05 TDB
node 2.926308958926796 3.6401e-05 deg
peri 287.0974776580899 3.8831e-05 deg
i 5.160670744428355 5.3868e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1169  
   data-arc span      11222 days (30.72 yr)  
   first obs. used      1989-10-03  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47549  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:47:42  

Additional Information
 Jupiter MOID = 2.57942 au 
 T_jup = 3.666 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.531098291797916E-15 -3.441855870527065E-15 2.028880852924434E-13 7.631018642706504E-15 1.342268624311777E-13 3.689877532481142E-17
q -3.441855870527065E-15 7.75808365030656E-15 -4.686009719160948E-13 -1.760764398096311E-14 -3.048180607796099E-13 1.78826666483354E-16
tp 2.028880852924434E-13 -4.686009719160948E-13 1.584184108372697E-9 -1.29308040246299E-11 5.405394581102521E-10 2.447873554777624E-12
node 7.631018642706504E-15 -1.760764398096311E-14 -1.29308040246299E-11 1.325066282303302E-9 -1.322770967330995E-9 5.416280762113146E-11
peri 1.342268624311777E-13 -3.048180607796099E-13 5.405394581102521E-10 -1.322770967330995E-9 1.507817762035841E-9 -5.311165160392716E-11
i 3.689877532481142E-17 1.78826666483354E-16 2.447873554777624E-12 5.416280762113146E-11 -5.311165160392716E-11 2.901724255508024E-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 15.5   n/a MPO467825  
diameter diameter 4.488 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13237 (1998 HC98)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20000124/Numbers.arcLast Updated: 2004-04-19

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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
2155-Oct-02 09:08 00:04 Amphi 0.0369973269183933 0.0369833233057838 0.0370113305427268 3.92740533347034 3.92740529390663 2508431.880689259 4.29855625633948 698.601323117159 41.7924651666273 2.59811155899872 9926.8670263674 T 20 CATAB v2.0f-lin.ifort 2020-Nov-13 02:47:45 2020-Nov-13 02:47

Alternate Designations
 1998 HC98 = 1989 TR15 = 1992 PO5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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