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8996 Waynedwards (1981 EC10)
Classification: Main-belt Asteroid          SPK-ID: 2008996
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1423959951430752 3.5518e-08  
a 3.086384618285833 1.7827e-08 au
q 2.646895809170741 1.1099e-07 au
i 6.954291770993277 4.7458e-06 deg
node 210.1700147343828 2.8823e-05 deg
peri 39.2376301749978 3.2543e-05 deg
M 21.97446635221501 1.4927e-05 deg
tp 2458879.610291040624
(2020-Jan-31.11029104)
8.1893e-05 TDB
period 1980.493838977278
5.42
1.7159e-05
4.698e-08
d
yr
n .1817728451939558 1.5749e-09 deg/d
Q 3.525873427400924 2.0365e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1287  
   data-arc span      15275 days (41.82 yr)  
   first obs. used      1978-10-28  
   last obs. used      2020-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54506  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:16:53  

Additional Information
 Earth MOID = 1.63785 au 
 Jupiter MOID = 1.51092 au 
 T_jup = 3.199 
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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 14.3   n/a MPO435784  
diameter diameter 7.343 km 0.245 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 30.5923 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.075   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8996 Waynedwards           Discovered 1981 Mar. 1 by S. J. Bus at Siding Spring.
Wayne N. Edwards (b. 1977) is a research scientist with the Canadian Hazards Information Service. An expert on seismic and atmospheric infrasound analysis of bolides, he helped analyze the flux and energy of the Chelyabinsk airburst.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-07-12Last Updated: 2014-08-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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