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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300773510245089 3.4614e-08  
a 2.874353641468292 1.3492e-08 au
q 2.500465333878445 9.8647e-08 au
i 9.66383718628259 4.6345e-06 deg
node 214.4590210634576 2.3966e-05 deg
peri 48.75261224810159 2.9951e-05 deg
M 209.5963670440224 1.9257e-05 deg
tp 2459944.143099696327
(2022-Dec-30.64309970)
9.6926e-05 TDB
period 1779.953785883852
4.87
1.2533e-05
3.431e-08
d
yr
n .2022524420886797 1.424e-09 deg/d
Q 3.248241949058138 1.5247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2178  
   data-arc span      14713 days (40.28 yr)  
   first obs. used      1980-10-10  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47168  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:45:19  

Additional Information
 Earth MOID = 1.49628 au 
 Jupiter MOID = 1.82827 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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