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436724 (2011 UW158)
Classification: Apollo [NEO, PHA]          SPK-ID: 2436724
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 141 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3763735704443768 4.8681e-09  
a 1.620743850711718 9.4519e-09 au
q 1.010738700843581 6.4799e-09 au
i 4.572213963900128 9.1964e-07 deg
node 285.9884394488366 2.031e-06 deg
peri 8.783653552105982 4.2728e-06 deg
M 225.3201701796312 8.3161e-06 deg
tp 2459482.448675540824
(2021-Sep-24.94867554)
1.9814e-05 TDB
period 753.6505156716912
2.06
6.5928e-06
1.805e-08
d
yr
n .4776749866337581 4.1786e-09 deg/d
Q 2.230749000579856 1.3009e-08 au
  Orbit Determination Parameters
   # obs. used (total)      956  
   # delay obs. used      8  
   # Doppler obs. used      0  
   data-arc span      3403 days (9.32 yr)  
   first obs. used      2011-10-25  
   last obs. used      2021-02-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .33172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:24:07  

Additional Information
 Earth MOID = .00382575 au 
 Jupiter MOID = 2.9857 au 
 T_jup = 4.241 
[ 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 19.9   n/a MPO360997  
rotation period rot_per 0.61073 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Carbognani, A.; Gary, Bruce L.; Oey, J.; Baj, G.; Bacci, P. (2016) Minor Planet Bull. 43, 38-41.]
[Gary, B.L. (2016) Minor Planet Bull. 43, 33-38.]
[Warner, B.D. (2016) Minor Planet Bull. 43, 66-79.]
[Monteiro, F.; Silva, J.S.; Lazzaro, D.; Arcoverde, P.; et al. (2018) Plan. Space Sci. 164, 54-74.]

436724 (2011 UW158)          Discovered 2011-Oct-25 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2015-06-04

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