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74323 (1998 UM29)
Classification: Main-belt Asteroid          SPK-ID: 2074323
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 .1651644999188563 3.7317e-08  
a 2.650853326721606 1.5223e-08 au
q 2.213026462655395 1.0118e-07 au
i 12.94749268431825 4.4536e-06 deg
node 66.85652875411999 2.7105e-05 deg
peri 11.01138278951509 3.4249e-05 deg
M 334.3741421986606 2.2651e-05 deg
tp 2459112.715509574180
(2020-Sep-20.21550957)
9.9736e-05 TDB
period 1576.438289788429
4.32
1.3579e-05
3.718e-08
d
yr
n .2283628876131365 1.9671e-09 deg/d
Q 3.088680190787817 1.7737e-08 au
  Orbit Determination Parameters
   # obs. used (total)      979  
   data-arc span      7681 days (21.03 yr)  
   first obs. used      1998-10-18  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56692  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:51:55  

Additional Information
 Earth MOID = 1.22945 au 
 Jupiter MOID = 2.20714 au 
 T_jup = 3.335 
[ 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 14.6   n/a MPO417339  
diameter diameter 7.622 km 0.248 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74323 (1998 UM29)          Discovered 1998-Oct-18 by Elst, E. W. at La Silla
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 UM29 = 2000 FO22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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