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JPL Small-Body Database Browser
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305849 (2009 EW4)
Classification: Main-belt Asteroid          SPK-ID: 2305849
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05672951730755695 4.8543e-08  
a 2.857916139588085 3.1905e-08 au
q 2.695787936483776 1.4954e-07 au
i 6.7472532411725 4.98e-06 deg
node 143.1340123049318 4.2674e-05 deg
peri 159.0023812111669 6.2191e-05 deg
M 274.9051475115928 4.5886e-05 deg
tp 2459017.631932497650
(2020-Jun-17.13193250)
0.00022717 TDB
period 1764.707162746558
4.83
2.9551e-05
8.091e-08
d
yr
n .2039998519866053 3.4161e-09 deg/d
Q 3.020044342692394 3.3715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      253  
   data-arc span      8829 days (24.17 yr)  
   first obs. used      1995-04-26  
   last obs. used      2019-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60155  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:55:04  

Additional Information
 Earth MOID = 1.68109 au 
 Jupiter MOID = 2.13546 au 
 T_jup = 3.290 
[ 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 15.9   n/a MPO437357  

305849 (2009 EW4)          Discovered 2009-Mar-15 by La Sagra at La Sagra
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

Alternate Designations
 2009 EW4 = 1999 FS60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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