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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09858887853052671 5.5204e-08  
a 2.423272572994125 1.2834e-08 au
q 2.184364847648851 1.3458e-07 au
i 4.077940850017344 5.0528e-06 deg
node 143.5367799902399 7.8357e-05 deg
peri 230.3362955743808 8.1647e-05 deg
M 354.4011986159324 2.2784e-05 deg
tp 2459021.928629095137
(2020-Jun-21.42862910)
8.7231e-05 TDB
period 1377.849640496566
3.77
1.0946e-05
2.997e-08
d
yr
n .2612766947997743 2.0757e-09 deg/d
Q 2.6621802983394 1.41e-08 au
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      9347 days (25.59 yr)  
   first obs. used      1994-12-28  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61676  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:10:42  

Additional Information
 Earth MOID = 1.18707 au 
 Jupiter MOID = 2.77074 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 16.0   n/a MPO436583  
rotation period rot_per 4.48 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:
[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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