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152818 (1999 UK4)
Classification: Main-belt Asteroid          SPK-ID: 2152818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1057902896541189 5.8365e-08  
a 3.089644148494461 2.6943e-08 au
q 2.762789799097078 1.9572e-07 au
i 4.008129378850928 5.4297e-06 deg
node 349.168243254462 4.9071e-05 deg
peri 29.05611923233234 5.4277e-05 deg
M 339.852741504961 2.2378e-05 deg
tp 2459311.513188865020
(2021-Apr-07.01318887)
0.00012384 TDB
period 1983.632065933345
5.43
2.5948e-05
7.104e-08
d
yr
n .1814852694623141 2.374e-09 deg/d
Q 3.416498497891844 2.9794e-08 au
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      7728 days (21.16 yr)  
   first obs. used      1999-10-13  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54878  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:28:49  

Additional Information
 Earth MOID = 1.76391 au 
 Jupiter MOID = 2.06088 au 
 T_jup = 3.213 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.50   n/a E2021B55  

152818 (1999 UK4)          Discovered 1999-Oct-29 by Sarounova, L. at Ondrejov
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

Alternate Designations
 1999 UK4 = 2004 RK63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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