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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1275599850704765 8.9655e-08  
a 3.220258695993954 5.6603e-08 au
q 2.809482544809893 3.1224e-07 au
i 9.93662462346909 6.3511e-06 deg
node 93.60121651209856 4.4977e-05 deg
peri 138.8953105973057 5.7058e-05 deg
M 283.1191246954647 4.2256e-05 deg
tp 2459451.265207880465
(2021-Aug-24.76520788)
0.00025462 TDB
period 2110.739168800728
5.78
5.5652e-05
1.524e-07
d
yr
n .1705563649555731 4.4969e-09 deg/d
Q 3.631034847178015 6.3824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      176  
   data-arc span      8457 days (23.15 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68008  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:35:40  

Additional Information
 Earth MOID = 1.80701 au 
 Jupiter MOID = 1.43799 au 
 T_jup = 3.153 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457327.5 (2015-Nov-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1276347946275818 8.9981e-08  
q 2.80771102193028 3.131e-07 au
tp 2457336.831744552269
(2015-Nov-10.33174455)
0.00022446 TDB
node 93.62409352697898 4.4987e-05 deg
peri 138.3076706075473 5.6919e-05 deg
i 9.937033418863269 6.3511e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      176  
   data-arc span      8457 days (23.15 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68008  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:35:40  

Additional Information
 Jupiter MOID = 1.43799 au 
 T_jup = 3.153 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.096537079417183E-15 -2.788426510488948E-14 -1.218370476548128E-11 2.081832941687723E-14 -1.653386208997691E-12 -8.599024285101563E-15
q -2.788426510488948E-14 9.803262665951663E-14 4.390717685309412E-11 -1.03436889436232E-13 6.045295700190997E-12 3.176229101459888E-14
tp -1.218370476548128E-11 4.390717685309412E-11 5.038421359104679E-8 -6.995553439226216E-11 7.896019411403899E-9 2.643656171165975E-11
node 2.081832941687723E-14 -1.03436889436232E-13 -6.995553439226216E-11 2.023824721006494E-9 -2.004903992090937E-9 2.873241375634718E-11
peri -1.653386208997691E-12 6.045295700190997E-12 7.896019411403899E-9 -2.004903992090937E-9 3.239751691336223E-9 -2.430951940786731E-11
i -8.599024285101563E-15 3.176229101459888E-14 2.643656171165975E-11 2.873241375634718E-11 -2.430951940786731E-11 4.033595100712205E-11

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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