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16450 Messerschmidt (1989 SY2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2016450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09286009903206202 3.2586e-08  
a 3.213657954550224 1.9826e-08 au
q 2.915237358635516 1.0399e-07 au
i 5.879149247468429 4.1789e-06 deg
node 127.1325017363152 3.9789e-05 deg
peri 138.3816789716841 4.6739e-05 deg
M 222.4661353898634 2.5164e-05 deg
tp 2459804.405590493709
(2022-Aug-12.90559049)
0.0001481 TDB
period 2104.252748209371
5.76
1.9473e-05
5.331e-08
d
yr
n .1710821099349138 1.5832e-09 deg/d
Q 3.512078550464932 2.1667e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2135  
   data-arc span      13549 days (37.10 yr)  
   first obs. used      1983-10-01  
   last obs. used      2020-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48662  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:02:40  

Additional Information
 Earth MOID = 1.90271 au 
 Jupiter MOID = 1.58651 au 
 T_jup = 3.176 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO502295  
diameter diameter 13.943 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.07921 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 0.076   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16450 Messerschmidt           Discovered 1989 Sept. 26 by E. W. Elst at the European Southern Observatory.
During 1719-1728 German naturalist Daniel Gottlieb Messerschmidt (1685-1735) was sent by Peter the Great on a expedition to Siberia. The first person to study systematically the "rumors" about "frozen" mammoths, he investigated thoroughly Siberian fauna and flora, as well as its mineralogy and geography.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

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Alternate Designations
 1989 SY2 = 1998 FU128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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