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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1679111865769893 3.1528e-08  
a 2.330926860872031 9.4922e-09 au
q 1.939538165838832 7.2047e-08 au
i 5.56124904312395 3.9076e-06 deg
node 123.7369112416113 3.895e-05 deg
peri 148.6299556574452 4.0917e-05 deg
M 176.0584871276433 1.203e-05 deg
tp 2458564.809294518392
(2019-Mar-22.30929452)
4.3622e-05 TDB
period 1299.844487516596
3.56
7.94e-06
2.174e-08
d
yr
n .2769562078059001 1.6918e-09 deg/d
Q 2.722315555905231 1.1086e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1182  
   data-arc span      8213 days (22.49 yr)  
   first obs. used      1998-09-22  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53993  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:00:52  

Additional Information
 Earth MOID = .923936 au 
 Jupiter MOID = 2.38916 au 
 T_jup = 3.546 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.37   n/a MPCxxxxx  
rotation period rot_per 3.85 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, 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

Alternate Designations
 1998 SG142 = 2000 BH25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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