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JPL Small-Body Database Browser
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109984 (2001 SB57)
Classification: Main-belt Asteroid          SPK-ID: 2109984
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301115720011859 4.5388e-08  
a 2.63744616502807 1.4011e-08 au
q 2.030539281924961 1.1885e-07 au
i 13.5479825217555 9.2182e-06 deg
node 35.19732723135793 1.8012e-05 deg
peri 61.22818558062566 2.7803e-05 deg
M 78.64990124759285 1.9058e-05 deg
tp 2458658.702003056835
(2019-Jun-24.20200306)
8.2207e-05 TDB
period 1564.493749485864
4.28
1.2467e-05
3.413e-08
d
yr
n .2301063843293116 1.8336e-09 deg/d
Q 3.244353048131178 1.7235e-08 au
  Orbit Determination Parameters
   # obs. used (total)      513  
   data-arc span      12859 days (35.21 yr)  
   first obs. used      1984-11-20  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60061  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:36:54  

Additional Information
 Earth MOID = 1.08397 au 
 Jupiter MOID = 2.14716 au 
 T_jup = 3.320 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457149.5 (2015-May-07.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2299700016321511 4.5102e-08  
q 2.031657641041444 1.1782e-07 au
tp 2457095.426442140876
(2015-Mar-13.92644214)
8.0787e-05 TDB
node 35.22934087183933 1.8024e-05 deg
peri 61.57480994549704 2.7821e-05 deg
i 13.54247770791935 9.2141e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      513  
   data-arc span      12859 days (35.21 yr)  
   first obs. used      1984-11-20  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60061  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:36:54  

Additional Information
 Jupiter MOID = 2.14716 au 
 T_jup = 3.320 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.034166409733269E-15 -5.292248926077088E-15 -2.101582964718035E-12 2.016091908620768E-14 -5.545351049933062E-13 2.481497263004288E-15
q -5.292248926077088E-15 1.388205739917793E-14 5.554398027517012E-12 -5.253811896364569E-14 1.461684626731839E-12 -7.598457063103302E-15
tp -2.101582964718035E-12 5.554398027517012E-12 6.526566583226065E-9 -4.592488843200131E-11 1.72203439619159E-9 -9.364113604530076E-12
node 2.016091908620768E-14 -5.253811896364569E-14 -4.592488843200131E-11 3.248623611343266E-10 -3.266797397429277E-10 -3.287954123426257E-11
peri -5.545351049933062E-13 1.461684626731839E-12 1.72203439619159E-9 -3.266797397429277E-10 7.73984183967382E-10 2.980945580525139E-11
i 2.481497263004288E-15 -7.598457063103302E-15 -9.364113604530076E-12 -3.287954123426257E-11 2.980945580525139E-11 8.490021015422837E-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 MPO453561  

109984 (2001 SB57)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 2001 SB57 = 1984 WH2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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