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(2018 SH)
Classification: Mars-crossing Asteroid          SPK-ID: 3830845
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5084575515601378 4.1603e-06  
a 2.739686455073906 2.8239e-05 au
q 1.346672188084554 2.5549e-06 au
i 17.26499864852319 0.0001007 deg
node 89.23113895832354 3.7735e-05 deg
peri 316.0233446108783 0.00018667 deg
M 169.094141820128 0.0026339 deg
tp 2458422.506834291342
(2018-Oct-31.00683429)
0.00018691 TDB
period 1656.340879940395
4.53
0.025609
7.011e-05
d
yr
n .2173465645628181 3.3605e-06 deg/d
Q 4.132700722063259 4.2598e-05 au
  Orbit Determination Parameters
   # obs. used (total)      187  
   data-arc span      118 days  
   first obs. used      2018-09-16  
   last obs. used      2019-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .55036  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:41:55  

Additional Information
 Earth MOID = .410337 au 
 Jupiter MOID = 1.49422 au 
 T_jup = 3.093 
[ show covariance matrix ]

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 18.8   .27455 E2018Y66 autocmod 2.6q
rotation period rot_per 20.0625 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.]

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