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74138 (1998 QD75)
Classification: Main-belt Asteroid          SPK-ID: 2074138
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2564431523831713 2.9927e-08  
a 2.685970119892115 1.009e-08 au
q 1.997171475139976 7.8831e-08 au
i 10.14408498115491 5.1468e-06 deg
node 200.0581293102198 1.9602e-05 deg
peri 92.40035727648794 2.394e-05 deg
M 8.942410171153837 1.045e-05 deg
tp 2458960.560531796806
(2020-Apr-21.06053180)
4.6667e-05 TDB
period 1607.867261505241
4.40
9.0602e-06
2.481e-08
d
yr
n .2238990796186608 1.2617e-09 deg/d
Q 3.374768764644254 1.2678e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      8102 days (22.18 yr)  
   first obs. used      1998-08-19  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51619  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:52  

Additional Information
 Earth MOID = 1.01277 au 
 Jupiter MOID = 1.96202 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 15.1   n/a MPO436301  
diameter diameter 3.663 km 0.985 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.100   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74138 (1998 QD75)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QD75 = 2002 JC74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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