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JPL Small-Body Database Browser
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390815 (2004 JW44)
Classification: Outer Main-belt Asteroid          SPK-ID: 2390815
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1275599938373005 9.5461e-08  
a 3.220258701672054 6.0217e-08 au
q 2.809482521532254 3.2431e-07 au
i 9.936625048015781 6.4718e-06 deg
node 93.6012068430872 5.3065e-05 deg
peri 138.8953172726784 6.4193e-05 deg
M 283.1191266021909 4.282e-05 deg
tp 2459451.265197893228
(2021-Aug-24.76519789)
0.00025719 TDB
period 2110.739174383348
5.78
5.9205e-05
1.621e-07
d
yr
n .1705563645044745 4.784e-09 deg/d
Q 3.631034881811854 6.7899e-08 au
  Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      8427 days (23.07 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70625  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 09:57:09  

Additional Information
 Earth MOID = 1.80701 au 
 Jupiter MOID = 1.43799 au 
 T_jup = 3.153 
[ 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 15.6   n/a MPO427947  
diameter diameter 3.971 km 0.425 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.078   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

390815 (2004 JW44)          Discovered 2004-May-09 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2004 JW44 = 2010 EB116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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