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74614 (1999 RP21)
Classification: Main-belt Asteroid          SPK-ID: 2074614
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .170929689572649 3.9736e-08  
a 2.391661005324256 8.9892e-09 au
q 1.982855132121171 9.42e-08 au
i 2.273878873386267 3.5509e-06 deg
node 111.3229439264931 0.0001245 deg
peri 310.6078210114493 0.0001252 deg
M 165.7473150322731 1.3054e-05 deg
tp 2458378.497884151321
(2018-Sep-16.99788415)
4.7616e-05 TDB
period 1350.976706089774
3.70
7.6166e-06
2.085e-08
d
yr
n .2664738765496358 1.5023e-09 deg/d
Q 2.80046687852734 1.0526e-08 au
  Orbit Determination Parameters
   # obs. used (total)      698  
   data-arc span      8453 days (23.14 yr)  
   first obs. used      1997-03-06  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60252  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:07:16  

Additional Information
 Earth MOID = .996765 au 
 Jupiter MOID = 2.51377 au 
 T_jup = 3.511 
[ 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 MPO453160  

74614 (1999 RP21)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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