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487575 (2014 WW398)
Classification: Main-belt Asteroid          SPK-ID: 2487575
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07957432236185025 6.775e-08  
a 3.063936157608119 4.8859e-08 au
q 2.820125514106481 2.0662e-07 au
i 15.04043283125755 5.4287e-06 deg
node 99.37158505073701 3.3472e-05 deg
peri 229.501443312574 5.6863e-05 deg
M 74.50469368175605 4.4461e-05 deg
tp 2458595.085640286977
(2019-Apr-21.58564029)
0.00024313 TDB
period 1958.925837882168
5.36
4.6857e-05
1.283e-07
d
yr
n .183774185340882 4.3959e-09 deg/d
Q 3.307746801109755 5.2747e-08 au
  Orbit Determination Parameters
   # obs. used (total)      195  
   data-arc span      5437 days (14.89 yr)  
   first obs. used      2004-12-13  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62516  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 03:44:30  

Additional Information
 Earth MOID = 1.83032 au 
 Jupiter MOID = 1.96601 au 
 T_jup = 3.176 
[ 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 15.5   n/a MPO409260  

487575 (2014 WW398)          Discovered 2011-Feb-21 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2017-03-14

[ show close-approach data ]
Alternate Designations
 2014 WW398 = 2012 HE22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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