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JPL Small-Body Database Browser
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74769 (1999 RK222)
Classification: Main-belt Asteroid          SPK-ID: 2074769
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1936920375110738 3.7647e-08  
a 2.305567467395732 1.2086e-08 au
q 1.858997407016606 8.7629e-08 au
i 4.529018411466663 4.3669e-06 deg
node 82.8427274595627 5.5936e-05 deg
peri 223.6151069188275 5.7267e-05 deg
M 239.266657255305 1.546e-05 deg
tp 2459029.334684646013
(2020-Jun-28.83468465)
5.691e-05 TDB
period 1278.689738583818
3.50
1.0054e-05
2.753e-08
d
yr
n .2815381942446096 2.2138e-09 deg/d
Q 2.752137527774857 1.4427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      451  
   data-arc span      8744 days (23.94 yr)  
   first obs. used      1995-04-25  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60835  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:21:12  

Additional Information
 Earth MOID = .846347 au 
 Jupiter MOID = 2.49293 au 
 T_jup = 3.559 
[ 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 16.6   n/a MPO432300  

74769 (1999 RK222)          Discovered 1999-Sep-07 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RK222 = 2002 JE147 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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