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JPL Small-Body Database Browser
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8887 Scheeres (1994 LK1)
Classification: Main-belt Asteroid          SPK-ID: 2008887
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1290250941906878 4.8563e-08  
a 2.563649633097213 1.081e-08 au
q 2.232874497714923 1.2634e-07 au
i 15.90102266033671 5.1633e-06 deg
node 128.793301568318 1.4924e-05 deg
peri 180.5104666438811 2.4888e-05 deg
M 77.80522850130966 1.7523e-05 deg
tp 2458676.464408311883
(2019-Jul-11.96440831)
7.3603e-05 TDB
period 1499.292724341249
4.10
9.4826e-06
2.596e-08
d
yr
n .240113217489383 1.5187e-09 deg/d
Q 2.894424768479503 1.2204e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2189  
   data-arc span      10283 days (28.15 yr)  
   first obs. used      1991-12-01  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42613  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:06:16  

Additional Information
 Earth MOID = 1.21829 au 
 Jupiter MOID = 2.38167 au 
 T_jup = 3.369 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7   n/a MPO347596  
diameter diameter 7.814 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.9827 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Molnar, L.A.; Haegert, M.J. (2007) Minor Planet Bull. 34, 126-128.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.187   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8887 Scheeres           Discovered 1994 June 9 by E. F. Helin at Palomar.
Named in honor of Daniel J. Scheeres (b. 1963), currently in the Department of Aerospace Engineering and Engineering Mechanics at Iowa State University. Scheeres has pioneered the investigation of the dynamics of orbits close to small, irregularly shaped minor planets. His research has included studies of the short-term evolution and the long-term stability of orbits around radar-derived models of (4179) Toutatis and (4769) Castalia. His work has far-reaching implications for the operation of spacecraft orbiting minor planets, for the cosmogony of satellites of minor planets and for understanding the distribution of non-escaping impact ejecta on small bodies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19981005/MPCPages.arcLast Updated: 2009-11-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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