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227884 (2007 EU42)
Classification: Main-belt Asteroid          SPK-ID: 2227884
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04055484693442748 4.321e-08  
a 2.775887682409047 1.9658e-08 au
q 2.663311982341786 1.2329e-07 au
i 4.731957681758368 5.6919e-06 deg
node 16.37803531991999 5.8875e-05 deg
peri 274.20355457 9.8112e-05 deg
M 249.7787315171708 8.1051e-05 deg
tp 2459717.706727845764
(2022-May-18.20672785)
0.00038138 TDB
period 1689.278526616496
4.62
1.7944e-05
4.913e-08
d
yr
n .2131087291573251 2.2637e-09 deg/d
Q 2.888463382476309 2.0455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      284  
   data-arc span      10244 days (28.05 yr)  
   first obs. used      1993-04-14  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:51:01  

Additional Information
 Earth MOID = 1.65067 au 
 Jupiter MOID = 2.17752 au 
 T_jup = 3.329 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457293.5 (2015-Sep-28.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04154859896756 4.3221e-08  
q 2.661455843518399 1.2367e-07 au
tp 2458015.830332082726
(2017-Sep-19.33033208)
0.00036895 TDB
node 16.421339220625 5.8918e-05 deg
peri 271.62792455177 9.6547e-05 deg
i 4.731475412530544 5.688e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      284  
   data-arc span      10244 days (28.05 yr)  
   first obs. used      1993-04-14  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:51:01  

Additional Information
 Jupiter MOID = 2.17752 au 
 T_jup = 3.329 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.86801552180962E-15 -5.283201596872967E-15 1.028016558238062E-12 -6.039622694426343E-15 2.364258338509766E-13 2.311433639193091E-15
q -5.283201596872967E-15 1.529353235030593E-14 -1.618053031085958E-12 1.883484325310986E-14 -4.320217770786269E-13 -6.399338723616645E-15
tp 1.028016558238062E-12 -1.618053031085958E-12 1.361261978355972E-7 4.431897203282042E-11 2.823669799220876E-8 -2.683818699768769E-12
node -6.039622694426343E-15 1.883484325310986E-14 4.431897203282042E-11 3.471292640375184E-9 -3.450194462830078E-9 -1.953859831406573E-11
peri 2.364258338509766E-13 -4.320217770786269E-13 2.823669799220876E-8 -3.450194462830078E-9 9.321263848867606E-9 1.891311642267517E-11
i 2.311433639193091E-15 -6.399338723616645E-15 -2.683818699768769E-12 -1.953859831406573E-11 1.891311642267517E-11 3.235323352849529E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.36   n/a E2021B55  
diameter diameter 3.319 km 0.684 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227884 (2007 EU42)          Discovered 2007-Mar-09 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

Alternate Designations
 2007 EU42 = 1995 WK22 = 2004 RM314 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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