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8568 Larrywilson (1996 RU2)
Classification: Main-belt Asteroid          SPK-ID: 2008568
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1009599841251795 3.3763e-08  
a 2.157343720185259 6.1337e-09 au
q 1.9395383324428 7.2263e-08 au
i .8731620778953256 2.95e-06 deg
node 44.73077322608487 0.00025604 deg
peri 242.4389298974195 0.00025666 deg
M 227.512015366404 1.8897e-05 deg
tp 2459426.442952727411
(2021-Jul-30.94295273)
6.1168e-05 TDB
period 1157.38391980177
3.17
4.936e-06
1.351e-08
d
yr
n .3110463121534111 1.3265e-09 deg/d
Q 2.375149107927719 6.753e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1698  
   data-arc span      9709 days (26.58 yr)  
   first obs. used      1993-09-19  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:59:37  

Additional Information
 Earth MOID = .923339 au 
 Jupiter MOID = 2.73398 au 
 T_jup = 3.693 
[ 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 15.2   n/a MPO416807  
diameter diameter 3.077 km 0.288 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.29 h n/a LCDB (Rev. 2019-August); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
geometric albedo albedo 0.107   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8568 Larrywilson           Discovered 1996 Sept. 10 by the Near-Earth Asteroid Tracking program.
Named in honor of Lawrence (Larry) Wilson, whom discoverer E. F. Helin has known since his childhood. As the editor of the Pasadena Star News, he has been supportive of the discoverer's work at Caltech's Jet Propulsion Laboratory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000124/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1996 RU2 = 1993 TE48 = 1995 DV12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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