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66142 (1998 SN145)
Classification: Main-belt Asteroid          SPK-ID: 2066142
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2365867931394371 3.362e-08  
a 2.397822798791001 9.4004e-09 au
q 1.830529592308408 8.1554e-08 au
i 1.852706731770649 3.3934e-06 deg
node 189.6654608749456 0.00010054 deg
peri 127.5878224680248 0.000101 deg
M 35.03582107146628 6.4136e-06 deg
tp 2459068.512180663485
(2020-Aug-07.01218066)
2.4509e-05 TDB
period 1356.200982537924
3.71
7.9752e-06
2.183e-08
d
yr
n .2654473817931577 1.561e-09 deg/d
Q 2.965116005273593 1.1624e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1017  
   data-arc span      18220 days (49.88 yr)  
   first obs. used      1971-03-26  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49526  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:19:46  

Additional Information
 Earth MOID = .815946 au 
 Jupiter MOID = 2.34781 au 
 T_jup = 3.488 
[ 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 15.99   n/a MPCxxxxx  

66142 (1998 SN145)          Discovered 1998-Sep-20 by Elst, E. W. at La Silla
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SN145 = 1998 UY38 = 2001 HF65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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