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120728 (1997 SG32)
Classification: Main-belt Asteroid          SPK-ID: 2120728
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09869441603327792 4.848e-08  
a 2.423640881619407 1.0499e-08 au
q 2.184441060133601 1.1464e-07 au
i 4.07789956055804 3.6411e-06 deg
node 143.5351942738458 7.1849e-05 deg
peri 230.4040181052785 7.5474e-05 deg
M 46.59139003986315 2.1794e-05 deg
tp 2459022.137316388509
(2020-Jun-21.63731639)
8.3417e-05 TDB
period 1378.163777582053
3.77
8.9553e-06
2.452e-08
d
yr
n .2612171396868441 1.6974e-09 deg/d
Q 2.662840703105214 1.1535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      685  
   data-arc span      9542 days (26.12 yr)  
   first obs. used      1994-12-28  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57781  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:07:52  

Additional Information
 Earth MOID = 1.18568 au 
 Jupiter MOID = 2.76963 au 
 T_jup = 3.502 
[ 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 16.18   n/a E2021B55  
rotation period rot_per 4.48 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:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

120728 (1997 SG32)          Discovered 1997-Sep-28 by AMOS at Haleakala
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1997 SG32 = 2001 TB158 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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