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8652 Acacia (1990 EA5)
Classification: Main-belt Asteroid          SPK-ID: 2008652
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1709229146572588 3.2444e-08  
a 2.46607438901116 7.3941e-09 au
q 2.044565766679754 8.064e-08 au
i 1.852013433398085 3.6817e-06 deg
node 302.3781558658683 9.8257e-05 deg
peri 350.6695977368739 9.8707e-05 deg
M 286.6654214505334 9.8175e-06 deg
tp 2459684.646922772934
(2022-Apr-15.14692277)
3.9024e-05 TDB
period 1414.515420284101
3.87
6.3617e-06
1.742e-08
d
yr
n .2545041183981543 1.1446e-09 deg/d
Q 2.887583011342566 8.6579e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2181  
   data-arc span      26104 days (71.47 yr)  
   first obs. used      1949-12-22  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50293  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 01:42:50  

Additional Information
 Earth MOID = 1.02807 au 
 Jupiter MOID = 2.29533 au 
 T_jup = 3.466 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456879.5 (2014-Aug-10.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718731909200954 3.2417e-08  
q 2.042275885456148 8.0657e-08 au
tp 2456855.278713671653
(2014-Jul-16.77871367)
3.6206e-05 TDB
node 302.512525354603 9.8163e-05 deg
peri 350.5625970660232 9.8609e-05 deg
i 1.853365839260821 3.6831e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2181  
   data-arc span      26104 days (71.47 yr)  
   first obs. used      1949-12-22  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50293  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 01:42:50  

Additional Information
 Jupiter MOID = 2.29533 au 
 T_jup = 3.466 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.050847500846768E-15 -2.607216138071381E-15 1.087703278952309E-13 -4.447856898852746E-15 4.32252382542832E-14 5.573090741843417E-17
q -2.607216138071381E-15 6.505515227730305E-15 -2.611209713152156E-13 1.11068448226045E-14 -1.05774503077384E-13 -5.788354461640387E-17
tp 1.087703278952309E-13 -2.611209713152156E-13 1.310885171420781E-9 -7.79178429951494E-12 3.487445384696218E-10 8.622172232276388E-14
node -4.447856898852746E-15 1.11068448226045E-14 -7.79178429951494E-12 9.63603844342253E-9 -9.632433396277595E-9 1.652665401632813E-11
peri 4.32252382542832E-14 -1.05774503077384E-13 3.487445384696218E-10 -9.632433396277595E-9 9.72381688191866E-9 -1.649138316771798E-11
i 5.573090741843417E-17 -5.788354461640387E-17 8.622172232276388E-14 1.652665401632813E-11 -1.649138316771798E-11 1.356555721918981E-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 14.18   n/a MPCxxxxx  
diameter diameter 4.098 km 0.185 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.290   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8652 Acacia           Discovered 1990 Mar. 2 by E. W. Elst at the European Southern Observatory
Named for Acacia, belonging to the family Mimosaceae. Acacia mearnsii (mimosa) is a shrub with feathery leaves composed of many small leaflets. The strongly scented tiny yellow flowers are grouped in loose, rounded clusters.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1990 EA5 = 1979 MC1 = 1990 GQ = 1991 SW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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