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152645 (1997 SN18)
Classification: Main-belt Asteroid          SPK-ID: 2152645
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1883646631452849 7.585e-08  
a 2.377062407376236 9.5926e-09 au
q 1.929307847735491 1.8004e-07 au
i 2.203389486200877 7.2784e-06 deg
node 344.4446394440323 0.00011119 deg
peri 320.9975975518251 0.00011227 deg
M 155.3101938308558 1.714e-05 deg
tp 2458622.993650426191
(2019-May-19.49365043)
6.3183e-05 TDB
period 1338.626143709487
3.66
8.103e-06
2.218e-08
d
yr
n .2689324436787098 1.6279e-09 deg/d
Q 2.824816967016981 1.1399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      309  
   data-arc span      9105 days (24.93 yr)  
   first obs. used      1996-03-11  
   last obs. used      2021-02-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56661  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:28:03  

Additional Information
 Earth MOID = .912907 au 
 Jupiter MOID = 2.41893 au 
 T_jup = 3.516 
[ 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 17.0   n/a MPO493867  

152645 (1997 SN18)          Discovered 1997-Sep-28 by Spacewatch at Kitt Peak
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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