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JPL Small-Body Database Browser
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74223 (1998 RD81)
Classification: Main-belt Asteroid          SPK-ID: 2074223
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 .1689587807076138 4.0436e-08  
a 2.716373540882991 1.7914e-08 au
q 2.257418379468977 1.1054e-07 au
i 4.255785908940772 5.208e-06 deg
node 229.4847398342298 6.1914e-05 deg
peri 96.93616604453747 6.3847e-05 deg
M 241.0998908434342 1.7289e-05 deg
tp 2459140.585374448805
(2020-Oct-18.08537445)
8.1427e-05 TDB
period 1635.244375979052
4.48
1.6176e-05
4.429e-08
d
yr
n .2201505813370928 2.1778e-09 deg/d
Q 3.175328702297005 2.0941e-08 au
  Orbit Determination Parameters
   # obs. used (total)      476  
   data-arc span      8063 days (22.08 yr)  
   first obs. used      1997-04-06  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62373  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:17  

Additional Information
 Earth MOID = 1.24983 au 
 Jupiter MOID = 2.1785 au 
 T_jup = 3.336 
[ 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 MPO436302  

74223 (1998 RD81)          Discovered 1998-Sep-15 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 RD81 = 1997 HC13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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