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178535 (1999 UA)
Classification: Main-belt Asteroid          SPK-ID: 2178535
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 .2393770126694867 4.9364e-08  
a 2.319765427043093 5.8242e-09 au
q 1.764466909023561 1.17e-07 au
i 4.443738200740555 2.9853e-06 deg
node 245.1696324855627 5.79e-05 deg
peri 125.5189971064426 5.8411e-05 deg
M 9.82588510057542 7.134e-06 deg
tp 2459165.276402089980
(2020-Nov-11.77640209)
2.5517e-05 TDB
period 1290.519390142741
3.53
4.8601e-06
1.331e-08
d
yr
n .2789574513562182 1.0506e-09 deg/d
Q 2.875063945062625 7.2183e-09 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      10330 days (28.28 yr)  
   first obs. used      1992-11-24  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47341  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:18:34  

Additional Information
 Earth MOID = .767676 au 
 Jupiter MOID = 2.61101 au 
 T_jup = 3.536 
[ 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 16.53   n/a MPCxxxxx  

178535 (1999 UA)          Discovered 1999-Oct-16 by Pravec, P., Kusnirak, P. at Ondrejov
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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