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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3026144741331649 5.4648e-08  
a 2.653638692205439 1.5674e-08 au
q 1.850609214824271 1.5105e-07 au
i 10.04415067232534 5.4746e-06 deg
node 287.8337541966935 3.06e-05 deg
peri 19.95262449580991 3.1702e-05 deg
M 26.35293176186675 1.2061e-05 deg
tp 2458884.918706633881
(2020-Feb-05.41870663)
5.2165e-05 TDB
period 1578.923589519267
4.32
1.3989e-05
3.83e-08
d
yr
n .2280034337251297 2.0201e-09 deg/d
Q 3.456668169586607 2.0417e-08 au
  Orbit Determination Parameters
   # obs. used (total)      816  
   data-arc span      7682 days (21.03 yr)  
   first obs. used      1998-06-29  
   last obs. used      2019-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52898  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:11:45  

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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