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JPL Small-Body Database Browser
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74504 (1999 DF7)
Classification: Main-belt Asteroid          SPK-ID: 2074504
[ 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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1857229002059098 3.1953e-08  
a 2.686587712601627 1.2782e-08 au
q 2.187626850959691 8.5367e-08 au
i 11.40912255833948 5.7763e-06 deg
node 42.36387553847126 2.2669e-05 deg
peri 72.64201691096034 2.9473e-05 deg
M 218.0204287216635 1.8318e-05 deg
tp 2459234.841789085633
(2021-Jan-20.34178909)		 8.3668e-05 TDB
period 1608.42184558471
4.40		 1.1479e-05
3.143e-08		 d
yr
n .2238218791843934 1.5973e-09 deg/d
Q 3.185548574243562 1.5156e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1025  
   data-arc span      9519 days (26.06 yr)  
   first obs. used      1993-10-09  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53749  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:54:10  

Additional Information
 Earth MOID = 1.23556 au 
 Jupiter MOID = 2.05781 au 
 T_jup = 3.321 
[ 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 14.8   n/a MPO359267  
diameter diameter 6.139 km 0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74504 (1999 DF7)          Discovered 1999-Feb-18 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 DF7 = 1993 TM33 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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