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17428 Charleroi (1989 DL)
Classification: Outer Main-belt Asteroid          SPK-ID: 2017428
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1151275798434792 1.9722e-08  
a 3.936573846094301 3.1598e-08 au
q 3.483365626318327 8.5487e-08 au
i 8.423257383977756 6.9655e-07 deg
node 255.9719009046112 9.9223e-06 deg
peri 327.2226760755271 1.5164e-05 deg
M 326.3135214865616 1.0997e-05 deg
tp 2459467.449519657046
(2021-Sep-09.94951966)
8.8873e-05 TDB
period 2852.830907754253
7.81
3.4349e-05
9.404e-08
d
yr
n .1261904443833272 1.5194e-09 deg/d
Q 4.389782065870275 3.5236e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2311  
   data-arc span      24297 days (66.52 yr)  
   first obs. used      1954-09-06  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45553  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:02:54  

Additional Information
 Earth MOID = 2.47711 au 
 Jupiter MOID = .711037 au 
 T_jup = 3.031 
[ 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 11.44   n/a E2021B10  
diameter diameter 30.297 km 0.500 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 5.335 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:
[Warner, B.D.; Stephens, R.D. (2020) Minor Planet Bull. 47, 200-213.]
geometric albedo albedo 0.064   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

17428 Charleroi           Discovered 1989 Feb. 28 by H. Debehogne at the European Southern Observatory.
Charleroi, built in 1666 on both sides of the Sambre river, is the largest city in Wallonia. Traces of metallurgy and commercial activity from prehistoric times have been found there, and the Romans built several temples and villas in the vicinity. The area is also known for its coal-mining industry, now terminated.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081113/MPCPages.arcLast Updated: 2008-11-17

[ show close-approach data ]
Alternate Designations
 1989 DL = 1985 SO2 = 1988 AQ = 2000 PT4 
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