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74186 (1998 RJ40)
Classification: Main-belt Asteroid          SPK-ID: 2074186
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 .05830245866046085 3.9942e-08  
a 2.333961531790423 9.1046e-09 au
q 2.197885836068106 9.1693e-08 au
i 7.185188824794004 4.0544e-06 deg
node 125.942904471648 2.9741e-05 deg
peri 351.3603777117993 4.7305e-05 deg
M 268.1565357497717 3.9272e-05 deg
tp 2459332.765097266247
(2021-Apr-28.26509727)
0.00014313 TDB
period 1302.383746000214
3.57
7.6207e-06
2.086e-08
d
yr
n .27641622609742 1.6174e-09 deg/d
Q 2.47003722751274 9.6354e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1292  
   data-arc span      7731 days (21.17 yr)  
   first obs. used      1998-08-23  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54794  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:12:25  

Additional Information
 Earth MOID = 1.21418 au 
 Jupiter MOID = 2.56635 au 
 T_jup = 3.556 
[ 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 14.9   n/a MPO296658  
diameter diameter 2.895 km 0.591 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74186 (1998 RJ40)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RJ40 = 1999 XW33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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