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74145 (1998 QO84)
Classification: Main-belt Asteroid          SPK-ID: 2074145
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3026144578828003 5.129e-08  
a 2.653638696461357 1.4855e-08 au
q 1.850609260914883 1.4125e-07 au
i 10.04415046589355 5.3853e-06 deg
node 287.8337544408765 3.0592e-05 deg
peri 19.95262464524347 3.1691e-05 deg
M 26.35292918437417 1.1654e-05 deg
tp 2458884.918717660448
(2020-Feb-05.41871766)
5.044e-05 TDB
period 1578.923593317694
4.32
1.3258e-05
3.63e-08
d
yr
n .2280034331766202 1.9146e-09 deg/d
Q 3.456668132007832 1.9351e-08 au
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      8073 days (22.10 yr)  
   first obs. used      1998-06-29  
   last obs. used      2020-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52601  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:10:59  

Additional Information
 Earth MOID = .838987 au 
 Jupiter MOID = 1.8304 au 
 T_jup = 3.301 
[ 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 14.4   n/a MPO474627  
diameter diameter 7.609 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74145 (1998 QO84)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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