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JPL Small-Body Database Browser
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(1998 SU4)
Classification: Apollo [NEO, PHA]          SPK-ID: 3014110
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5803355541250101 4.0743e-06  
a 1.147909197269241 1.0754e-08 au
q .4817366771868004 4.6725e-06 au
i 23.15280921420491 0.00031315 deg
node 350.605146625671 4.9527e-05 deg
peri 241.8220304558112 0.0004433 deg
M 240.3842074194091 0.00012439 deg
tp 2459545.760795430360
(2021-Nov-27.26079543)
0.00015541 TDB
period 449.2206689072976
1.23
6.3129e-06
1.728e-08
d
yr
n .8013878810956728 1.1262e-08 deg/d
Q 1.814081717351682 1.6995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      97  
   data-arc span      5855 days (16.03 yr)  
   first obs. used      1998-09-19  
   last obs. used      2014-09-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:48:31  

Additional Information
 Earth MOID = .0200812 au 
 Jupiter MOID = 3.34828 au 
 T_jup = 5.236 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455991.5 (2012-Mar-05.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5805344304011167 4.0711e-06  
q .4816296182976707 4.6758e-06 au
tp 2455951.343382998285
(2012-Jan-24.84338300)
0.00015465 TDB
node 350.6784255010024 4.9627e-05 deg
peri 241.7664769656073 0.00044312 deg
i 23.15764676477519 0.00031363 deg
  Orbit Determination Parameters
   # obs. used (total)      97  
   data-arc span      5855 days (16.03 yr)  
   first obs. used      1998-09-19  
   last obs. used      2014-09-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:48:31  

Additional Information
 Jupiter MOID = 3.34828 au 
 T_jup = 5.236 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.657369355182331E-11 -1.903538496902985E-11 5.34540582208928E-11 -6.552331371999048E-11 -1.776963918337054E-9 1.128603137519029E-9
q -1.903538496902985E-11 2.186271276343729E-11 -6.125626316443265E-11 7.528107448893188E-11 2.040955297809687E-9 -1.296315616293401E-9
tp 5.34540582208928E-11 -6.125626316443265E-11 2.391732988791368E-8 3.978293391324863E-9 4.692779743695453E-9 -1.114357088327778E-8
node -6.552331371999048E-11 7.528107448893188E-11 3.978293391324863E-9 2.462861899078179E-9 7.512250128733967E-9 -2.930568935200125E-9
peri -1.776963918337054E-9 2.040955297809687E-9 4.692779743695453E-9 7.512250128733967E-9 1.963533153118337E-7 -1.313169726026953E-7
i 1.128603137519029E-9 -1.296315616293401E-9 -1.114357088327778E-8 -2.930568935200125E-9 -1.313169726026953E-7 9.836443145209341E-8

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 21.3   n/a MPO308282  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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