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202421 (2005 UQ513)
Classification: TransNeptunian Object          SPK-ID: 2202421
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1446516403008406 1.0135e-05  
a 43.32933904056871 0.00064769 au
q 37.06167907519919 0.00092755 au
i 25.69940993355909 1.2936e-05 deg
node 307.5319129484033 0.00012707 deg
peri 222.4806022645168 0.0049804 deg
M 228.6690360541282 0.0061442 deg
tp 2497005.098987201927
(2124-Jun-19.59898720)
1.3913 TDB
period 104176.9223671548
285.22
2.3359
0.006395
d
yr
n .003455659773968346 7.7483e-08 deg/d
Q 49.59699900593823 0.00074138 au
  Orbit Determination Parameters
   # obs. used (total)      488  
   data-arc span      10726 days (29.37 yr)  
   first obs. used      1990-09-15  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .35603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 07:12:08  

Additional Information
 Earth MOID = 36.1128 au 
 Jupiter MOID = 31.9117 au 
 T_jup = 5.266 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 3.6   n/a MPO470162  
rotation period rot_per 7.03 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Thirouin, A.; Ortiz, J.L.; Campo Bagatin, A.; Pravec, P.; et al. (2012) Mon. Not. Royal Ast. Soc. 424, 3156-3177.]

202421 (2005 UQ513)          Discovered 2005-Oct-21 by Palomar at Palomar
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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