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17030 Sierks (1999 FC9)
Classification: Main-belt Asteroid          SPK-ID: 2017030
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04718817092938212 4.2732e-08  
a 3.175898864078691 1.9132e-08 au
q 3.026034005626116 1.3678e-07 au
i 2.904246691588668 3.5693e-06 deg
node 104.1780704690291 9.6743e-05 deg
peri 102.3868903891981 0.00010495 deg
M 239.4091148057129 4.2156e-05 deg
tp 2459692.985055150180
(2022-Apr-23.48505515)
0.00024396 TDB
period 2067.27580987916
5.66
1.868e-05
5.114e-08
d
yr
n .1741422205395242 1.5736e-09 deg/d
Q 3.325763722531268 2.0035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1879  
   data-arc span      10725 days (29.36 yr)  
   first obs. used      1990-09-14  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:54:28  

Additional Information
 Earth MOID = 2.02285 au 
 Jupiter MOID = 1.63565 au 
 T_jup = 3.197 
[ 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 13.2   n/a MPO358795  
rotation period rot_per 416.198 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

17030 Sierks           Discovered 1999 Mar. 19 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
German physicist Holger Sierks (b. 1960) has worked on instrumentation for missions such as SOHO, Ulysses, Rosetta, OSIRIS-REx and Dawn. His research areas include solar physics and the evolution, structure, and surface properties of small solar system bodies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

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Alternate Designations
 1999 FC9 = 1990 RK13 = 2000 KD57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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