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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101895545871367 6.3005e-08  
a 2.532030610874453 1.2002e-08 au
q 2.27402796961639 1.6136e-07 au
i 2.493193726011266 6.6405e-06 deg
node 354.4614659332132 8.1234e-05 deg
peri 326.1987379089822 8.53e-05 deg
M 165.7810983095617 2.3704e-05 deg
tp 2458322.804867623539
(2018-Jul-23.30486762)		 9.6238e-05 TDB
period 1471.640917711635
4.03		 1.0463e-05
2.865e-08		 d
yr
n .2446248916208386 1.7393e-09 deg/d
Q 2.790033252132517 1.3225e-08 au
   Orbit Determination Parameters
   # obs. used (total)      769  
   data-arc span      7784 days (21.31 yr)  
   first obs. used      1998-09-12  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52788  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:46:28  

Additional Information
 Earth MOID = 1.26175 au 
 Jupiter MOID = 2.4634 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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