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74548 (1999 JM64)
Classification: Main-belt Asteroid          SPK-ID: 2074548
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3288775227067173 5.243e-08  
a 3.127130293460107 2.2426e-08 au
q 2.098687429365817 1.7265e-07 au
i 21.10570430012114 6.6217e-06 deg
node 239.1998918739374 1.3342e-05 deg
peri 259.4953562604177 1.7409e-05 deg
M 354.9679032107115 9.248e-06 deg
tp 2459028.733445245992
(2020-Jun-28.23344525)
5.1999e-05 TDB
period 2019.841969294576
5.53
2.1728e-05
5.949e-08
d
yr
n .178231765391888 1.9173e-09 deg/d
Q 4.155573157554397 2.9802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      807  
   data-arc span      8121 days (22.23 yr)  
   first obs. used      1997-11-07  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49002  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:18:40  

Additional Information
 Earth MOID = 1.22494 au 
 Jupiter MOID = 1.7881 au 
 T_jup = 3.030 
[ 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 13.7   n/a MPO280227  
diameter diameter 9.538 km 0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74548 (1999 JM64)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JM64 = 2001 QO174 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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