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5134 Ebilson (1990 SM2)
Classification: Main-belt Asteroid          SPK-ID: 2005134
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0348098180346474 3.0351e-08  
a 2.788915738128044 1.091e-08 au
q 2.691834088769843 8.7244e-08 au
i 8.10346236296259 3.1904e-06 deg
node 90.30702187755153 2.8377e-05 deg
peri 200.4089838534022 7.0465e-05 deg
M 296.3508755779134 6.6036e-05 deg
tp 2459697.274801911015
0.00031223 TDB
period 1701.184889361837
n .2116172100112212 1.2418e-09 deg/d
Q 2.885997387486246 1.129e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3051  
   data-arc span      27040 days (74.03 yr)  
   first obs. used      1947-06-15  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3971  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:40:39  

Additional Information
 Earth MOID = 1.6766 au 
 Jupiter MOID = 2.18264 au 
 T_jup = 3.314 
[ 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 12.00   n/a MPCxxxxx  
diameter diameter 10.750 km 0.231 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 18.6632 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.222   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
SMASSII spectral type spec_B Sl   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

5134 Ebilson           Discovered 1990 Sept. 17 by H. E. Holt at Palomar.
Named in honor of Elizabeth M. Bilson (b. 1937), administrative director of the Center for Radiophysics and Space Research (CRSR), Cornell University. Raised in Hungary, Bilson studied at the Sorbonne and obtained her Ph.D. in chemistry from the University of Illinois at Champaign-Urbana. She was a research associate under Thomas Gold at the CRSR from 1969 to 1983, directing the Lunar Laboratory, and she has coauthored numerous articles related to the physical properties of lunar material, in particular explaining the reason for the low albedo of the moon. She is also a very a good cook. Name proposed by B. E. Clark, and citation written by M. Bilson.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1990 SM2 = 1947 LL = 1981 WN6 = 1983 CG = 1985 PL2 = 1986 WS6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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