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74598 (1999 RU1)
Classification: Main-belt Asteroid          SPK-ID: 2074598
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2218620970884281 5.1232e-08  
a 2.353930826218036 7.9665e-09 au
q 1.831682796712207 1.2179e-07 au
i .4964013613751757 5.4748e-06 deg
node 137.9152025029018 0.00055093 deg
peri 225.4338946368792 0.00055103 deg
M 258.531747784032 1.073e-05 deg
tp 2459372.306219509932
(2021-Jun-06.80621951)
4.024e-05 TDB
period 1319.134173501725
3.61
6.6966e-06
1.833e-08
d
yr
n .2729062799156792 1.3854e-09 deg/d
Q 2.876178855723866 9.734e-09 au
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      8503 days (23.28 yr)  
   first obs. used      1997-01-09  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54245  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:06:54  

Additional Information
 Earth MOID = .829381 au 
 Jupiter MOID = 2.58154 au 
 T_jup = 3.522 
[ 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 16.4   n/a MPO333435  
diameter diameter 1.249 km 0.204 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.236   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74598 (1999 RU1)          Discovered 1999-Sep-05 by Korlevic, K. at Visnjan
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RU1 = 1997 AW11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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