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74168 (1998 RK2)
Classification: Main-belt Asteroid          SPK-ID: 2074168
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07195529025001317 5.2938e-08  
a 2.762761939146704 1.8103e-08 au
q 2.563966601923714 1.4808e-07 au
i 5.435733001708406 5.2432e-06 deg
node 105.113930783615 6.4324e-05 deg
peri 289.2570320220742 7.4542e-05 deg
M 278.0574473745814 3.8316e-05 deg
tp 2459582.286538438594
(2022-Jan-02.78653844)
0.00017959 TDB
period 1677.311109237511
4.59
1.6486e-05
4.514e-08
d
yr
n .2146292348612968 2.1096e-09 deg/d
Q 2.961557276369694 1.9406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      10250 days (28.06 yr)  
   first obs. used      1992-04-29  
   last obs. used      2020-05-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .66321  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:11:33  

Additional Information
 Earth MOID = 1.57584 au 
 Jupiter MOID = 2.35213 au 
 T_jup = 3.330 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.18   n/a E2021B10  
diameter diameter 5.045 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74168 (1998 RK2)          Discovered 1998-Sep-15 by ODAS at Caussols
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RK2 = 2000 BM16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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