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74172 (1998 RX7)
Classification: Main-belt Asteroid          SPK-ID: 2074172
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 .0665070455748292 7.3054e-08  
a 2.638707335026524 1.77e-08 au
q 2.463214706037279 1.9955e-07 au
i 4.416717306978655 7.1973e-06 deg
node 151.3220618356331 6.6735e-05 deg
peri 175.8044870654809 7.8039e-05 deg
M 37.40048562918389 4.048e-05 deg
tp 2458837.847776742490
(2019-Dec-20.34777674)
0.00017579 TDB
period 1565.616044488277
4.29
1.5753e-05
4.313e-08
d
yr
n .2299414350455679 2.3136e-09 deg/d
Q 2.814199964015769 1.8877e-08 au
  Orbit Determination Parameters
   # obs. used (total)      531  
   data-arc span      9177 days (25.13 yr)  
   first obs. used      1994-10-02  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64146  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:24:43  

Additional Information
 Earth MOID = 1.45153 au 
 Jupiter MOID = 2.40173 au 
 T_jup = 3.389 
[ 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 15.5   n/a MPO347990  

74172 (1998 RX7)          Discovered 1998-Sep-12 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 RX7 = 1996 AZ9 = 2001 FR11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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