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66141 (1998 SG142)
Classification: Main-belt Asteroid          SPK-ID: 2066141
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1680783500851198 3.1739e-08  
a 2.330489828592337 9.6064e-09 au
q 1.938784943312384 7.2565e-08 au
i 5.561216331546007 3.9682e-06 deg
node 123.7378869580328 3.9547e-05 deg
peri 148.5856786772738 4.1604e-05 deg
M 120.7076960949208 1.2255e-05 deg
tp 2458564.785809352702
(2019-Mar-22.28580935)
4.4483e-05 TDB
period 1299.478937197836
3.56
8.0348e-06
2.2e-08
d
yr
n .2770341170564065 1.7129e-09 deg/d
Q 2.722194713872291 1.1221e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1146  
   data-arc span      7730 days (21.16 yr)  
   first obs. used      1998-09-22  
   last obs. used      2019-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54687  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 06:58:18  

Additional Information
 Earth MOID = .925023 au 
 Jupiter MOID = 2.39011 au 
 T_jup = 3.546 
[ 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 15.3   n/a MPO337766  
rotation period rot_per 3.85 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, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

66141 (1998 SG142)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SG142 = 2000 BH25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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