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JPL Small-Body Database Browser
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20631 Stefuller (1999 TW91)
Classification: Main-belt Asteroid          SPK-ID: 2020631
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1345589100070454 3.8621e-08  
a 2.344048706878635 8.9296e-09 au
q 2.028636067877621 9.0305e-08 au
i 7.36730776004091 4.4073e-06 deg
node 65.50225605130373 3.4968e-05 deg
peri 260.4250005785856 3.9647e-05 deg
M 193.9814312747062 1.9937e-05 deg
tp 2459205.008676906079
(2020-Dec-21.50867691)
7.3331e-05 TDB
period 1310.83604296266
3.59
7.4904e-06
2.051e-08
d
yr
n .2746338887557235 1.5693e-09 deg/d
Q 2.659461345879649 1.0131e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2002  
   data-arc span      25374 days (69.47 yr)  
   first obs. used      1949-11-19  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47619  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:54:05  

Additional Information
 Earth MOID = 1.0316 au 
 Jupiter MOID = 2.64917 au 
 T_jup = 3.539 
[ 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 14.0   n/a MPO384931  
diameter diameter 3.328 km 0.278 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.481   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20631 Stefuller           Discovered 1999 Oct. 2 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Stephen Fuller (b. 1986) was awarded first place in the 2004 Intel International Science and Engineering Fair for his biochemistry team project. He attends the Hilton Head Preparatory School, Hilton Head Island, South Carolina, 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
 1999 TW91 = 1949 WA1 = 2000 AK151 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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