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74328 (1998 UB44)
Classification: Main-belt Asteroid          SPK-ID: 2074328
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1930529278592295 5.0239e-08  
a 2.653650348979392 1.834e-08 au
q 2.141355379594254 1.315e-07 au
i 16.61612558338018 5.0821e-06 deg
node 48.67065837654713 1.7236e-05 deg
peri 311.7693736246442 2.1324e-05 deg
M 10.99664718757348 1.6994e-05 deg
tp 2458952.269499843545
(2020-Apr-12.76949984)
7.4219e-05 TDB
period 1578.933993257898
4.32
1.6368e-05
4.481e-08
d
yr
n .2280019313899202 2.3636e-09 deg/d
Q 3.16594531836453 2.188e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1021  
   data-arc span      15742 days (43.10 yr)  
   first obs. used      1976-06-04  
   last obs. used      2019-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53727  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:14:17  

Additional Information
 Earth MOID = 1.17624 au 
 Jupiter MOID = 2.38512 au 
 T_jup = 3.304 
[ 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 14.1   n/a MPO432296  
diameter diameter 7.567 km 0.529 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74328 (1998 UB44)          Discovered 1998-Oct-16 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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