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JPL Small-Body Database Browser
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74749 (1999 RK195)
Classification: Main-belt Asteroid          SPK-ID: 2074749
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699256739193733 4.9686e-08  
a 2.30835876404097 1.3706e-08 au
q 1.916109345413617 1.1593e-07 au
i 23.29237947615182 6.2763e-06 deg
node 307.9918309598348 1.2943e-05 deg
peri 281.2198642960299 2.6026e-05 deg
M 309.6734900673468 2.5262e-05 deg
tp 2458779.580253811952
(2019-Oct-23.08025381)
9.0228e-05 TDB
period 1281.012560946008
3.51
1.1409e-05
3.124e-08
d
yr
n .2810276893258139 2.5029e-09 deg/d
Q 2.700608182668323 1.6035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      7772 days (21.28 yr)  
   first obs. used      1998-01-26  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48831  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:57  

Additional Information
 Earth MOID = 1.0286 au 
 Jupiter MOID = 2.71489 au 
 T_jup = 3.460 
[ 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 14.5   n/a MPO436306  
diameter diameter 5.584 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.156   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74749 (1999 RK195)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RK195 = 1998 BD16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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