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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1637178407980957 5.0057e-08  
a 2.651640246763078 2.3033e-08 au
q 2.217519430989698 1.3835e-07 au
i 11.50736029460625 6.8746e-06 deg
node 9.56403665042601 2.7576e-05 deg
peri 258.7240604677065 3.5672e-05 deg
M 76.58415378060806 2.5569e-05 deg
tp 2458664.989012475204
(2019-Jun-30.48901248)
0.00011065 TDB
period 1577.140303135536
4.32
2.0549e-05
5.626e-08
d
yr
n .2282612392088889 2.9741e-09 deg/d
Q 3.085761062536459 2.6804e-08 au
  Orbit Determination Parameters
   # obs. used (total)      517  
   data-arc span      8128 days (22.25 yr)  
   first obs. used      1997-04-01  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60062  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:46:49  

Additional Information
 Earth MOID = 1.23702 au 
 Jupiter MOID = 2.11394 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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