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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6366087857727529 4.3734e-08  
a 2.21656388299167 1.383e-08 au
q .8054798408526046 9.5498e-08 au
i 29.44916610998404 1.2833e-05 deg
node 269.8071001899712 1.2443e-05 deg
peri 287.2807573308335 1.3981e-05 deg
M 54.12151692961393 7.2184e-06 deg
tp 2458819.288287140118
(2019-Dec-01.78828714)
2.2505e-05 TDB
period 1205.365635157609
3.30
1.1281e-05
3.089e-08
d
yr
n .2986645624362168 2.7953e-09 deg/d
Q 3.627647925130736 2.2635e-08 au
  Orbit Determination Parameters
   # obs. used (total)      316  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      10868 days (29.75 yr)  
   first obs. used      1990-07-27  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44704  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-29 06:55:15  

Additional Information
 Earth MOID = .0641285 au 
 Jupiter MOID = 2.39768 au 
 T_jup = 3.224 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455942.5 (2012-Jan-16.0) TDB
Reference: JPL 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6372756366854574 4.389e-08  
q .80444028976256 9.5958e-08 au
tp 2456408.100819893141
(2013-Apr-25.60081989)
4.2708e-06 TDB
node 269.9649386694264 1.2453e-05 deg
peri 287.1480112978389 1.3967e-05 deg
i 29.39864825354383 1.2835e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      316  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      10868 days (29.75 yr)  
   first obs. used      1990-07-27  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44704  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-29 06:55:15  

Additional Information
 Jupiter MOID = 2.39768 au 
 T_jup = 3.224 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.926322896135114E-15 -4.206592014073143E-15 5.664791812748748E-14 -4.988742810662695E-14 -1.36552373130777E-13 1.095314989447515E-14
q -4.206592014073143E-15 9.207881144284203E-15 -1.248971251350166E-13 1.064617577471694E-13 2.979442956211918E-13 -2.738956305424807E-14
tp 5.664791812748748E-14 -1.248971251350166E-13 1.823973254078279E-11 -3.068150707643152E-11 4.590010215640184E-11 5.127054520417109E-12
node -4.988742810662695E-14 1.064617577471694E-13 -3.068150707643152E-11 1.550677645333449E-10 -1.412949945670875E-10 3.816937657426251E-11
peri -1.36552373130777E-13 2.979442956211918E-13 4.590010215640184E-11 -1.412949945670875E-10 1.950667837118402E-10 -3.306276132870163E-11
i 1.095314989447515E-14 -2.738956305424807E-14 5.127054520417109E-12 3.816937657426251E-11 -3.306276132870163E-11 1.647432529193265E-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-August); 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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