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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04057337155422678 4.2174e-08  
a 2.775286519592501 1.9194e-08 au
q 2.662683788463637 1.2126e-07 au
i 4.732366639711191 5.6774e-06 deg
node 16.37787533410424 5.703e-05 deg
peri 274.5101114631035 9.65e-05 deg
M 291.2494325437326 8.016e-05 deg
tp 2459719.003143756510
(2022-May-19.50314376)
0.00037659 TDB
period 1688.729795956901
4.62
1.7519e-05
4.796e-08
d
yr
n .2131779760515268 2.2116e-09 deg/d
Q 2.887889250721364 1.9973e-08 au
  Orbit Determination Parameters
   # obs. used (total)      295  
   data-arc span      10285 days (28.16 yr)  
   first obs. used      1993-04-14  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6041  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 03:50:50  

Additional Information
 Earth MOID = 1.65164 au 
 Jupiter MOID = 2.17756 au 
 T_jup = 3.329 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457373.5 (2015-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04122334772749874 4.2193e-08  
q 2.663114488271 1.2167e-07 au
tp 2458015.892669361405
(2017-Sep-19.39266936)
0.00036776 TDB
node 16.41352147740481 5.7053e-05 deg
peri 271.5708901213408 9.5391e-05 deg
i 4.731907492619248 5.6736e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      295  
   data-arc span      10285 days (28.16 yr)  
   first obs. used      1993-04-14  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6041  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 03:50:50  

Additional Information
 Jupiter MOID = 2.17756 au 
 T_jup = 3.329 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.780227148547254E-15 -5.075479764326887E-15 4.872686719206978E-13 -5.379136929861806E-15 1.318785205771855E-13 2.217400917428226E-15
q -5.075479764326887E-15 1.480243478643819E-14 -3.181355096576392E-13 1.556924236494001E-14 -1.787766873669548E-13 -6.203284038466519E-15
tp 4.872686719206978E-13 -3.181355096576392E-13 1.352442785291639E-7 1.196282098351074E-11 2.813055592933721E-8 -2.492144535515434E-12
node -5.379136929861806E-15 1.556924236494001E-14 1.196282098351074E-11 3.255101145184503E-9 -3.24132717275316E-9 -1.354129255176665E-11
peri 1.318785205771855E-13 -1.787766873669548E-13 2.813055592933721E-8 -3.24132717275316E-9 9.09936846356962E-9 1.299082590822186E-11
i 2.217400917428226E-15 -6.203284038466519E-15 -2.492144535515434E-12 -1.354129255176665E-11 1.299082590822186E-11 3.218977334931476E-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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