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175739 (1998 JL4)
Classification: Main-belt Asteroid          SPK-ID: 2175739
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1534308443221926 4.6274e-08  
a 2.294402878693688 1.3889e-08 au
q 1.942370707800446 1.0793e-07 au
i 3.948615820691166 5.5088e-06 deg
node 173.4104126570267 6.8888e-05 deg
peri 66.05545958583259 7.2305e-05 deg
M 174.8043321530082 2.7117e-05 deg
tp 2458584.114184638479
(2019-Apr-10.61418464)
9.1316e-05 TDB
period 1269.413010519195
3.48
1.1526e-05
3.156e-08
d
yr
n .2835956438265578 2.5751e-09 deg/d
Q 2.64643504958693 1.602e-08 au
  Orbit Determination Parameters
   # obs. used (total)      422  
   data-arc span      8297 days (22.72 yr)  
   first obs. used      1998-04-22  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55999  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:06:37  

Additional Information
 Earth MOID = .932953 au 
 Jupiter MOID = 2.35976 au 
 T_jup = 3.577 
[ 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 16.7   n/a MPO433134  

175739 (1998 JL4)          Discovered 1998-May-05 by Zoltowski, F. B. at Woomera
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

[ show close-approach data ]
Alternate Designations
 1998 JL4 = 2002 RW9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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