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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09869441635501526 4.8828e-08  
a 2.423640881826137 1.0555e-08 au
q 2.184441059540152 1.1563e-07 au
i 4.077899859217827 3.7165e-06 deg
node 143.5351993551255 7.2949e-05 deg
peri 230.4040129981749 7.6522e-05 deg
M 46.5913901620217 2.1798e-05 deg
tp 2459022.137315898037
(2020-Jun-21.63731590)
8.3428e-05 TDB
period 1378.163777758384
3.77
9.0033e-06
2.465e-08
d
yr
n .2612171396534225 1.7065e-09 deg/d
Q 2.662840704112122 1.1597e-08 au
  Orbit Determination Parameters
   # obs. used (total)      674  
   data-arc span      9515 days (26.05 yr)  
   first obs. used      1994-12-28  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57926  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:25:47  

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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