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JPL Small-Body Database Browser
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172784 (2004 EH83)
Classification: Main-belt Asteroid          SPK-ID: 2172784
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04857224902399697 7.2052e-08  
a 3.087773671372332 3.9912e-08 au
q 2.937793559676694 2.3076e-07 au
i 11.45682504498602 8.3797e-06 deg
node 353.0667447507341 2.7396e-05 deg
peri 237.2671379495721 7.7713e-05 deg
M 313.4043896651171 7.2669e-05 deg
tp 2459257.012846776043
(2021-Feb-11.51284678)
0.00040004 TDB
period 1981.830996003577
5.43
3.8425e-05
1.052e-07
d
yr
n .1816502016195887 3.522e-09 deg/d
Q 3.23775378306797 4.1851e-08 au
  Orbit Determination Parameters
   # obs. used (total)      411  
   data-arc span      6687 days (18.31 yr)  
   first obs. used      2001-10-14  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56471  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:54:07  

Additional Information
 Earth MOID = 1.94842 au 
 Jupiter MOID = 1.78479 au 
 T_jup = 3.193 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456843.5 (2014-Jul-05.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04890154295814472 7.3199e-08  
q 2.938886644030577 2.34e-07 au
tp 2457260.833342064368
(2015-Aug-26.33334206)
0.00038925 TDB
node 353.1017313914804 2.7406e-05 deg
peri 234.7378336057227 7.562e-05 deg
i 11.45295144577305 8.3761e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      411  
   data-arc span      6687 days (18.31 yr)  
   first obs. used      2001-10-14  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56471  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:54:07  

Additional Information
 Jupiter MOID = 1.78479 au 
 T_jup = 3.193 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.358140395702753E-15 -1.690747009028304E-14 -1.292174135824752E-11 1.652963825431032E-14 -2.188955994053714E-12 -9.206306040037312E-16
q -1.690747009028304E-14 5.475486024516944E-14 3.864809221406648E-11 -5.429487625935674E-14 6.442548806606424E-12 2.678461591838285E-15
tp -1.292174135824752E-11 3.864809221406648E-11 1.51516309774658E-7 6.331697245207357E-12 2.74401740846948E-8 5.930965331712437E-11
node 1.652963825431032E-14 -5.429487625935674E-14 6.331697245207357E-12 7.511064427216922E-10 -7.331523352994196E-10 5.004445653670914E-11
peri -2.188955994053714E-12 6.442548806606424E-12 2.74401740846948E-8 -7.331523352994196E-10 5.718353410941246E-9 -3.818994750644478E-11
i -9.206306040037312E-16 2.678461591838285E-15 5.930965331712437E-11 5.004445653670914E-11 -3.818994750644478E-11 7.015909827148064E-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 14.9   n/a MPO287730  
diameter diameter 6.698 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172784 (2004 EH83)          Discovered 2004-Mar-14 by NEAT at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2004 EH83 = 2001 TN224 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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