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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .328993698693441 5.3821e-08  
a 3.126774300918118 2.3259e-08 au
q 2.098085258679468 1.7588e-07 au
i 21.10805741035582 6.8566e-06 deg
node 239.2008202557726 1.5849e-05 deg
peri 259.5392692159546 1.8995e-05 deg
M 283.6477458520358 9.5629e-06 deg
tp 2459028.814315572113
(2020-Jun-28.31431557)
5.5528e-05 TDB
period 2019.497070867708
5.53
2.2533e-05
6.169e-08
d
yr
n .1782622045821143 1.989e-09 deg/d
Q 4.155463343156767 3.0911e-08 au
  Orbit Determination Parameters
   # obs. used (total)      654  
   data-arc span      8054 days (22.05 yr)  
   first obs. used      1997-11-07  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53005  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:48:34  

Additional Information
 Earth MOID = 1.22473 au 
 Jupiter MOID = 1.78924 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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