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74602 (1999 RJ4)
Classification: Main-belt Asteroid          SPK-ID: 2074602
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 .09641368035179178 3.7309e-08  
a 2.165867234438219 7.4725e-09 au
q 1.957048003212673 8.0965e-08 au
i 4.424577761206498 4.0938e-06 deg
node 284.135899657629 5.1775e-05 deg
peri 92.83671611114463 5.6703e-05 deg
M 141.4493065402152 2.3878e-05 deg
tp 2458543.049090207570
(2019-Feb-28.54909021)
7.6524e-05 TDB
period 1164.249804776911
3.19
6.0252e-06
1.65e-08
d
yr
n .3092119908656388 1.6002e-09 deg/d
Q 2.374686465663765 8.1929e-09 au
  Orbit Determination Parameters
   # obs. used (total)      910  
   data-arc span      7588 days (20.77 yr)  
   first obs. used      1999-07-13  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51183  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:06:54  

Additional Information
 Earth MOID = .96432 au 
 Jupiter MOID = 3.00893 au 
 T_jup = 3.683 
[ 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 16.1   n/a MPO453159  
diameter diameter 1.450 km 0.351 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.334   0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74602 (1999 RJ4)          Discovered 1999-Sep-05 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RJ4 = 2002 LX23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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