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JPL Small-Body Database Browser
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25176 Thomasaunins (1998 ST81)
Classification: Main-belt Asteroid          SPK-ID: 2025176
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04157507307514793 4.3803e-08  
a 2.658497525090602 1.4705e-08 au
q 2.54797029621486 1.1894e-07 au
i .8041949956371682 4.6734e-06 deg
node 261.7787155170736 0.00037699 deg
peri 349.7370568804403 0.00038242 deg
M 105.4116120962559 6.5868e-05 deg
tp 2458536.904969587065
(2019-Feb-22.40496959)
0.00028899 TDB
period 1583.262105850903
4.33
1.3136e-05
3.596e-08
d
yr
n .2273786498581818 1.8865e-09 deg/d
Q 2.769024753966344 1.5316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      954  
   data-arc span      9075 days (24.85 yr)  
   first obs. used      1993-07-12  
   last obs. used      2018-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56821  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:43:37  

Additional Information
 Earth MOID = 1.53346 au 
 Jupiter MOID = 2.22836 au 
 T_jup = 3.385 
[ 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 14.8   n/a MPO347712  
diameter diameter 2.707 km 1.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.241   0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

25176 Thomasaunins           Discovered 1998 Sept. 26 by Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Thomas Rudolf Aunins (b. 1994) is a finalist in the 2008 Society for Science and the Public middle school science competition, for his physical sciences project. He attends the Lenape Middle School, Doylestown, Pennsylvania.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090111/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1998 ST81 = 1998 SP164 = 2000 AD46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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