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JPL Small-Body Database Browser
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172220 (2002 RZ57)
Classification: Main-belt Asteroid          SPK-ID: 2172220
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09264855143344007 5.2209e-08  
a 2.565647292593807 1.7896e-08 au
q 2.327943787445863 1.3561e-07 au
i 4.522569773593086 5.6059e-06 deg
node 288.6202186799904 6.2034e-05 deg
peri 54.52669196876055 6.7512e-05 deg
M 121.6931214903867 2.7557e-05 deg
tp 2458493.091911740488
(2019-Jan-09.59191174)
0.00011328 TDB
period 1501.045494899679
4.11
1.5705e-05
4.3e-08
d
yr
n .2398328373278654 2.5093e-09 deg/d
Q 2.803350797741751 1.9554e-08 au
  Orbit Determination Parameters
   # obs. used (total)      306  
   data-arc span      6354 days (17.40 yr)  
   first obs. used      2002-09-05  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61466  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:45:23  

Additional Information
 Earth MOID = 1.32305 au 
 Jupiter MOID = 2.52361 au 
 T_jup = 3.422 
[ 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 16.2   n/a MPO454180  

172220 (2002 RZ57)          Discovered 2002-Sep-05 by LONEOS at Anderson Mesa
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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