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187393 (2005 UL494)
Classification: Main-belt Asteroid          SPK-ID: 2187393
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2323056353884635 3.3061e-08  
a 2.597406823320109 1.9402e-08 au
q 1.9940145808664 8.6698e-08 au
i 12.57513982347212 6.2824e-06 deg
node 200.7982368571774 1.8756e-05 deg
peri 68.56387246976669 2.7198e-05 deg
M 340.8393636165939 2.3265e-05 deg
tp 2459281.879650610386
(2021-Mar-08.37965061)
9.9528e-05 TDB
period 1529.003193500978
4.19
1.7132e-05
4.69e-08
d
yr
n .2354475134716387 2.6381e-09 deg/d
Q 3.200799065773817 2.3909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      7227 days (19.79 yr)  
   first obs. used      2000-07-10  
   last obs. used      2020-04-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:55:13  

Additional Information
 Earth MOID = 1.01708 au 
 Jupiter MOID = 1.99988 au 
 T_jup = 3.345 
[ 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 15.46   n/a E2021B55  
diameter diameter 5.672 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187393 (2005 UL494)          Discovered 2005-Oct-25 by CSS at Catalina
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1905-Aug-08 18:57 00:04 Jupiter 1.98398488186594 1.98398385263262 1.98398591113118 3.58724074223355 3.46618468903094 2417066.289278140 3.51308472184268 470.354840669939 19.0004093435113 -86.5753851206499 1727045.43048446 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 21:55:14 2021-Apr-13 21:55
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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