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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3028410794815215 5.6183e-08  
a 2.653695465080084 1.5643e-08 au
q 1.850047465820013 1.5475e-07 au
i 10.0427717437785 5.9788e-06 deg
node 287.8413697738554 3.1147e-05 deg
peri 20.03558028559739 3.2251e-05 deg
M 295.1106818363892 1.1599e-05 deg
tp 2458885.107119777606
(2020-Feb-05.60711978)
5.2637e-05 TDB
period 1578.974259855849
4.32
1.3962e-05
3.823e-08
d
yr
n .2279961169429487 2.016e-09 deg/d
Q 3.457343464340155 2.0381e-08 au
  Orbit Determination Parameters
   # obs. used (total)      746  
   data-arc span      7620 days (20.86 yr)  
   first obs. used      1998-06-29  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52573  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:10  

Additional Information
 Earth MOID = .837677 au 
 Jupiter MOID = 1.82772 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 14.3   n/a MPO436301  
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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