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JPL Small-Body Database Browser
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74727 (1999 RJ170)
Classification: Main-belt Asteroid          SPK-ID: 2074727
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1808401399816463 5.092e-08  
a 2.360940529968684 9.1651e-09 au
q 1.933987714040805 1.2248e-07 au
i 2.290977119492489 6.2612e-06 deg
node 342.0079655769224 0.00010461 deg
peri 27.41237779984237 0.00010563 deg
M 133.3147883002756 1.4857e-05 deg
tp 2458109.816081225259
(2017-Dec-22.31608123)
5.3339e-05 TDB
period 1325.030876252319
3.63
7.7156e-06
2.112e-08
d
yr
n .2716917820196115 1.582e-09 deg/d
Q 2.787893345896563 1.0823e-08 au
  Orbit Determination Parameters
   # obs. used (total)      583  
   data-arc span      13648 days (37.37 yr)  
   first obs. used      1981-10-24  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55403  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:25:55  

Additional Information
 Earth MOID = .932778 au 
 Jupiter MOID = 2.67494 au 
 T_jup = 3.528 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO351370  
diameter diameter 3.106 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74727 (1999 RJ170)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RJ170 = 1981 UQ28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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