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17188 (1999 WC2)
Classification: Apollo [NEO]          SPK-ID: 2017188
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .636589895934822 4.3747e-08  
a 2.216720811901729 1.3725e-08 au
q .8055787409366532 9.5547e-08 au
i 29.45015505227671 1.2906e-05 deg
node 269.8096539753777 1.2444e-05 deg
peri 287.2852474343415 1.3996e-05 deg
M 294.6666161318213 6.133e-06 deg
tp 2458819.274941676335
(2019-Dec-01.77494168)
2.2526e-05 TDB
period 1205.493644143557
3.30
1.1195e-05
3.065e-08
d
yr
n .2986328478370054 2.7734e-09 deg/d
Q 3.627862882866804 2.2461e-08 au
  Orbit Determination Parameters
   # obs. used (total)      312  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      10388 days (28.44 yr)  
   first obs. used      1990-07-27  
   last obs. used      2019-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43987  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-09 07:29:16  

Additional Information
 Earth MOID = .0639419 au 
 Jupiter MOID = 2.39796 au 
 T_jup = 3.224 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455854.5 (2011-Oct-20.0) TDB
Reference: JPL 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6375129916623153 4.3901e-08  
q .8037971959268562 9.5981e-08 au
tp 2456407.987852410562
(2013-Apr-25.48785241)
4.2604e-06 TDB
node 270.0146283095607 1.2449e-05 deg
peri 287.1089762198694 1.3969e-05 deg
i 29.38715157497248 1.2914e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      312  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      10388 days (28.44 yr)  
   first obs. used      1990-07-27  
   last obs. used      2019-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43987  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-09 07:29:16  

Additional Information
 Jupiter MOID = 2.39796 au 
 T_jup = 3.224 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.927334842272924E-15 -4.208704118889219E-15 5.763647369034445E-14 -5.153373447950479E-14 -1.351627136492188E-13 9.104822401009392E-15
q -4.208704118889219E-15 9.212258175896923E-15 -1.271689873402511E-13 1.106954760369739E-13 2.942976664110916E-13 -2.26053400192735E-14
tp 5.763647369034445E-14 -1.271689873402511E-13 1.815121299044588E-11 -2.974941948796329E-11 4.497938031902757E-11 7.233123267468646E-12
node -5.153373447950479E-14 1.106954760369739E-13 -2.974941948796329E-11 1.549708024586903E-10 -1.411324968226857E-10 3.73952268828871E-11
peri -1.351627136492188E-13 2.942976664110916E-13 4.497938031902757E-11 -1.411324968226857E-10 1.951293591314581E-10 -3.221093563976196E-11
i 9.104822401009392E-15 -2.26053400192735E-14 7.233123267468646E-12 3.73952268828871E-11 -3.221093563976196E-11 1.667680123355079E-10

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 16.5   n/a MPO267773  
diameter diameter 1.819 km 0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 5.0638 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Vaduvescu, O.; Aznar Macias, A.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]
geometric albedo albedo 0.147   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

17188 (1999 WC2)          Discovered 1999-Nov-17 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

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