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137000 (1998 SH78)
Classification: Main-belt Asteroid          SPK-ID: 2137000
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09615205663347291 5.0187e-08  
a 2.437078969019459 1.288e-08 au
q 2.202748813970055 1.2273e-07 au
i 3.568093994052763 4.6079e-06 deg
node 286.8464452065722 7.8752e-05 deg
peri 56.08718497270499 8.1242e-05 deg
M 264.9657711280171 2.0692e-05 deg
tp 2459367.343124752501
(2021-Jun-01.84312475)
8.076e-05 TDB
period 1389.641674146673
3.80
1.1017e-05
3.016e-08
d
yr
n .2590595883079446 2.0537e-09 deg/d
Q 2.671409124068864 1.4119e-08 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      21675 days (59.34 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57207  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:43:31  

Additional Information
 Earth MOID = 1.19679 au 
 Jupiter MOID = 2.65157 au 
 T_jup = 3.495 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO436676  

137000 (1998 SH78)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 SH78 = 4210 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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