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74198 (1998 RA50)
Classification: Main-belt Asteroid          SPK-ID: 2074198
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .164113024849822 5.0196e-08  
a 2.653094116502907 2.3878e-08 au
q 2.217686815832348 1.3944e-07 au
i 11.50662647773446 6.9943e-06 deg
node 9.596089105769243 2.7634e-05 deg
peri 258.8479991628822 3.6427e-05 deg
M 345.1762957169265 2.709e-05 deg
tp 2458665.495255237846
(2019-Jun-30.99525524)
0.00011909 TDB
period 1578.437578004163
4.32
2.1309e-05
5.834e-08
d
yr
n .2280736375113407 3.0791e-09 deg/d
Q 3.088501417173465 2.7797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      7979 days (21.85 yr)  
   first obs. used      1997-04-01  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59346  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:07:24  

Additional Information
 Earth MOID = 1.23684 au 
 Jupiter MOID = 2.11243 au 
 T_jup = 3.342 
[ 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 MPO436302  
diameter diameter 2.305 km 0.397 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.303   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74198 (1998 RA50)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RA50 = 2001 FH154 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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