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152821 (1999 UJ29)
Classification: Main-belt Asteroid          SPK-ID: 2152821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09286918991418897 5.2716e-08  
a 3.062907052610722 2.6084e-08 au
q 2.778457355852308 1.766e-07 au
i 2.623886706948982 3.8691e-06 deg
node 93.77437170902864 0.00012958 deg
peri 311.7559950161129 0.00013385 deg
M 320.3933931088957 3.4135e-05 deg
tp 2459415.909221290789
(2021-Jul-20.40922129)
0.00018673 TDB
period 1957.938984217842
5.36
2.5011e-05
6.848e-08
d
yr
n .1838668124501402 2.3487e-09 deg/d
Q 3.347356749369135 2.8506e-08 au
  Orbit Determination Parameters
   # obs. used (total)      306  
   data-arc span      7685 days (21.04 yr)  
   first obs. used      1999-10-31  
   last obs. used      2020-11-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:28:49  

Additional Information
 Earth MOID = 1.78779 au 
 Jupiter MOID = 1.9957 au 
 T_jup = 3.225 
[ 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 16.20   n/a E2021B55  

152821 (1999 UJ29)          Discovered 1999-Oct-31 by Spacewatch at Kitt Peak
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 1999 UJ29 = 2004 RW122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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