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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301115662324013 5.3612e-08  
a 2.637446166169934 1.5032e-08 au
q 2.030539298018928 1.4296e-07 au
i 13.54798193753478 1.1067e-05 deg
node 35.19732685437248 1.8355e-05 deg
peri 61.22818721938734 2.8769e-05 deg
M 78.64989947296588 2.1207e-05 deg
tp 2458658.702010547068
(2019-Jun-24.20201055)
9.1147e-05 TDB
period 1564.493750501869
4.28
1.3375e-05
3.662e-08
d
yr
n .2301063841798771 1.9672e-09 deg/d
Q 3.24435303432094 1.8491e-08 au
  Orbit Determination Parameters
   # obs. used (total)      498  
   data-arc span      12830 days (35.13 yr)  
   first obs. used      1984-11-20  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6091  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 15:55:14  

Additional Information
 Earth MOID = 1.08397 au 
 Jupiter MOID = 2.14716 au 
 T_jup = 3.320 
[ show covariance matrix ]

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2145-Jan-26 23:11 00:06 Iris 0.0141969005229011 0.0141642252804675 0.0142295891139808 5.89776070816155 5.89776063950336 2504531.466248794 5.97635436600504 1768.18946832382 70.5747302526463 -22.8797308831619 11748.1141736331 T 20 CATAB v2.0f-lin.ifort 2020-Jan-29 15:55:31 2020-Jan-29 15:55

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