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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 | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .17089888027727 3.4313e-08  
a 2.466519764290693 7.7056e-09 au
q 2.044994298391658 8.4665e-08 au
i 1.852103169537282 3.9411e-06 deg
node 302.3820439723816 9.9925e-05 deg
peri 350.6041140521203 0.00010038 deg
M 236.855901018088 9.7511e-06 deg
tp 2459684.490047657827
(2022-Apr-14.99004766)
3.9041e-05 TDB
period 1414.898631743698
3.87
6.6304e-06
1.815e-08
d
yr
n .2544351884462153 1.1923e-09 deg/d
Q 2.888045230189729 9.0225e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2003  
   data-arc span      26016 days (71.23 yr)  
   first obs. used      1949-12-22  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51323  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:47:11  

Additional Information
 Earth MOID = 1.02692 au 
 Jupiter MOID = 2.29567 au 
 T_jup = 3.466 
[ show covariance matrix ]

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 14.16   n/a E2021B10  
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

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