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74180 (1998 RK26)
Classification: Main-belt Asteroid          SPK-ID: 2074180
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1496968311227744 3.9199e-08  
a 2.618543243470952 1.1274e-08 au
q 2.226555617765399 1.0233e-07 au
i 13.75541552625701 5.4042e-06 deg
node 148.5816358406968 1.6797e-05 deg
peri 145.323719083459 2.4651e-05 deg
M 82.44617427814225 1.663e-05 deg
tp 2458646.049119365342
(2019-Jun-11.54911937)
7.1257e-05 TDB
period 1547.704525354867
4.24
9.9957e-06
2.737e-08
d
yr
n .2326025375660494 1.5022e-09 deg/d
Q 3.010530869176505 1.2962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      818  
   data-arc span      10504 days (28.76 yr)  
   first obs. used      1992-01-28  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55584  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:43  

Additional Information
 Earth MOID = 1.22463 au 
 Jupiter MOID = 2.29654 au 
 T_jup = 3.350 
[ 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 15.2   n/a MPO502605  
diameter diameter 2.379 km 0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.342   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74180 (1998 RK26)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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