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74191 (1998 RK45)
Classification: Main-belt Asteroid          SPK-ID: 2074191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09822978767459969 3.684e-08  
a 2.70260077985925 1.4897e-08 au
q 2.437124879084468 1.0414e-07 au
i 7.601628263431969 4.2948e-06 deg
node 183.3601997238172 3.1012e-05 deg
peri 140.0753162799397 3.956e-05 deg
M 345.0190164591463 2.5806e-05 deg
tp 2459068.031920353694
(2020-Aug-06.53192035)
0.00011658 TDB
period 1622.823445538897
4.44
1.3417e-05
3.673e-08
d
yr
n .2218355921524498 1.8341e-09 deg/d
Q 2.968076680634032 1.636e-08 au
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      8852 days (24.24 yr)  
   first obs. used      1996-01-24  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60098  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:03:37  

Additional Information
 Earth MOID = 1.43128 au 
 Jupiter MOID = 2.34009 au 
 T_jup = 3.347 
[ 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 15.3   n/a MPO474628  
diameter diameter 4.317 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74191 (1998 RK45)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RK45 = 1996 BU16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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