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JPL Small-Body Database Browser
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74745 (1999 RZ191)
Classification: Main-belt Asteroid          SPK-ID: 2074745
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2697352576338357 4.9126e-08  
a 2.361107126164793 1.4154e-08 au
q 1.724233287187648 1.1598e-07 au
i 13.09288757439874 5.3777e-06 deg
node 91.96855245852302 2.1613e-05 deg
peri 204.1606017735597 2.3019e-05 deg
M 180.4306882604231 8.0846e-06 deg
tp 2459261.500186663950
(2021-Feb-16.00018666)
3.117e-05 TDB
period 1325.171126924668
3.63
1.1916e-05
3.262e-08
d
yr
n .2716630272766765 2.4427e-09 deg/d
Q 2.997980965141939 1.7971e-08 au
  Orbit Determination Parameters
   # obs. used (total)      559  
   data-arc span      7051 days (19.30 yr)  
   first obs. used      1999-09-11  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54729  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:46:28  

Additional Information
 Earth MOID = .715448 au 
 Jupiter MOID = 2.22538 au 
 T_jup = 3.467 
[ 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 15.6   n/a MPO381766  
diameter diameter 5.058 km 0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74745 (1999 RZ191)          Discovered 1999-Sep-11 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RZ191 = 2000 YD114 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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