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17458 Dick (1990 TP7)
Classification: Main-belt Asteroid          SPK-ID: 2017458
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09808244335859932 3.1834e-08  
a 3.012593804787337 1.5563e-08 au
q 2.717111243566816 9.491e-08 au
i 1.420992729465143 3.7075e-06 deg
node 9.455449424550721 0.00014204 deg
peri 60.68216165415316 0.00014333 deg
M 220.2602959628066 1.9644e-05 deg
tp 2459741.855669548444
(2022-Jun-11.35566955)
0.00010625 TDB
period 1909.894134070903
5.23
1.48e-05
4.052e-08
d
yr
n .1884921229810088 1.4606e-09 deg/d
Q 3.308076366007858 1.7089e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1451  
   data-arc span      12200 days (33.40 yr)  
   first obs. used      1985-12-15  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49485  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:31:07  

Additional Information
 Earth MOID = 1.73181 au 
 Jupiter MOID = 1.93467 au 
 T_jup = 3.241 
[ 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 13.8   n/a MPO347660  
diameter diameter 4.519 km 0.629 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.88 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.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]
geometric albedo albedo 0.238   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17458 Dick           Discovered 1990 Oct. 13 by L. D. Schmadel and F. Börngen at Tautenburg.
German astronomer and geodesist Wolfgang R. Dick (b. 1959) works at the Frankfurt IERS Central Bureau. Editor of many books, he is known for his research in the history of astronomy. Dick serves in the corresponding commissions of the IAU and the AG. The name was suggested by the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040504/MPCPages.arcLast Updated: 2004-05-11

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Alternate Designations
 1990 TP7 = 1987 GF1 = 1992 FY3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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