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JPL Small-Body Database Browser
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(2013 SB21)
Classification: Amor [NEO]          SPK-ID: 3648676
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2310813513099222 7.5688e-05  
a 1.336902885758322 0.00014438 au
q 1.027969560347154 9.8278e-06 au
i .8095396920173482 0.00024179 deg
node 186.03247639194 0.00013741 deg
peri 205.3739051863453 0.0012498 deg
M 97.31487274140392 0.25027 deg
tp 2458847.875260304843
(2019-Dec-30.37526030)
0.36779 TDB
period 564.6095477744949
1.55
0.091462
0.0002504
d
yr
n .6376087712632589 0.00010329 deg/d
Q 1.645836211169489 0.00017774 au
  Orbit Determination Parameters
   # obs. used (total)      55  
   data-arc span      73 days  
   first obs. used      2013-09-25  
   last obs. used      2013-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .56968  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:44:31  

Additional Information
 Earth MOID = .0338338 au 
 Jupiter MOID = 3.77753 au 
 T_jup = 4.878 
[ 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 27.0   n/a E2013T84  
rotation period rot_per 0.0584 h n/a LCDB (Rev. 2019-August); 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:
[Thirouin, A.; Moskovitz, N.A.; Binzel, R.P.; Christensen, E.J.; et al. (2018) Astrophys. J. Supp. Series 2391, A4.]

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