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JPL Small-Body Database Browser
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74187 (1998 RZ40)
Classification: Main-belt Asteroid          SPK-ID: 2074187
[ 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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1017244275523501 6.6384e-08  
a 2.531829840702856 1.2055e-08 au
q 2.274280899497401 1.7032e-07 au
i 2.493160521447769 6.8417e-06 deg
node 354.4774978716836 8.1238e-05 deg
peri 326.0797939667672 8.5815e-05 deg
M 68.05737223388833 2.4736e-05 deg
tp 2458322.321940034038
(2018-Jul-22.82194003)		 0.00010096 TDB
period 1471.465886804849
4.03		 1.0509e-05
2.877e-08		 d
yr
n .2446539897582719 1.7473e-09 deg/d
Q 2.789378781908312 1.3281e-08 au
   Orbit Determination Parameters
   # obs. used (total)      750  
   data-arc span      7756 days (21.23 yr)  
   first obs. used      1998-09-12  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53753  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:24:51  

Additional Information
 Earth MOID = 1.26112 au 
 Jupiter MOID = 2.46204 au 
 T_jup = 3.442 
[ 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 15.5   n/a MPO453154  
diameter diameter 2.000 km 0.404 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.254   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74187 (1998 RZ40)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RZ40 = 2001 HN43 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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