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8833 Acer (1989 RW)
Classification: Main-belt Asteroid          SPK-ID: 2008833
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1299592951846222 1.598e-08  
a 2.874440086836534 1.3248e-08 au
q 2.500879879100834 4.8064e-08 au
i 9.663758453312129 1.3283e-06 deg
node 214.4478747757306 8.775e-06 deg
peri 48.78957671597167 1.3197e-05 deg
M 249.1955707745797 1.3692e-05 deg
tp 2459944.376835187772
(2022-Dec-30.87683519)
6.9604e-05 TDB
period 1780.034083893363
4.87
1.2306e-05
3.369e-08
d
yr
n .2022433184046641 1.3982e-09 deg/d
Q 3.248000294572234 1.497e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2274  
   data-arc span      14825 days (40.59 yr)  
   first obs. used      1980-10-10  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46708  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 12:34:18  

Additional Information
 Earth MOID = 1.49842 au 
 Jupiter MOID = 1.82736 au 
 T_jup = 3.263 
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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 13.04   n/a E2021B10  
diameter diameter 17.731 km 2.950 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 27.42 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 [Result based on fragmentary lightcurve(s), may be completely wrong.]
geometric albedo albedo 0.039   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

8833 Acer           Discovered 1989 Sept. 3 by E. W. Elst at Haute Provence.
Named for Aceraceae, the maple family, with two genera and more than 100 species. One well-known species is Acer saccharum (sugar maple), the sap of which is used for maple syrup and maple sugar.
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
 1989 RW = 1980 TY12 = 1987 BT3 = 1993 JB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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