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20812 Shannonbabb (2000 SL269)
Classification: Main-belt Asteroid          SPK-ID: 2020812
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09680078373108836 3.9337e-08  
a 2.692939124129853 1.5568e-08 au
q 2.432260506373973 1.0732e-07 au
i 6.639001889180054 4.6201e-06 deg
node 126.7752897376427 3.7784e-05 deg
peri 35.60673841524537 4.5646e-05 deg
M 38.40321542954828 2.7217e-05 deg
tp 2458828.311826745613
(2019-Dec-10.81182675)
0.00012126 TDB
period 1614.128964937782
4.42
1.3997e-05
3.832e-08
d
yr
n .223030506124321 1.9341e-09 deg/d
Q 2.953617741885734 1.7075e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1135  
   data-arc span      9846 days (26.96 yr)  
   first obs. used      1993-01-22  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52082  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 01:25:50  

Additional Information
 Earth MOID = 1.44453 au 
 Jupiter MOID = 2.03364 au 
 T_jup = 3.355 
[ 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 14.6   n/a MPO431740  
diameter diameter 7.650 km 0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.40 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.030   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20812 Shannonbabb           Discovered 2000 Sept. 27 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Shannon Babb (b. 1988) was awarded second place in the 2004 Intel International Science and Engineering Fair for her environmental science project. She attends the American Fork High School, American Fork, Utah, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

Alternate Designations
 2000 SL269 = 1993 BT12 = 1998 HD108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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