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74054 (1998 JT4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2074054
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 .1616241527652132 4.8248e-08  
a 3.932922660838709 5.2079e-08 au
q 3.297267367889544 2.0819e-07 au
i 5.051752457606655 5.0681e-06 deg
node 65.43171675339721 7.7929e-05 deg
peri 155.5478108460307 8.1559e-05 deg
M 303.3809965634463 2.7429e-05 deg
tp 2459448.554926120573
(2021-Aug-22.05492612)
0.00022296 TDB
period 2848.862813068693
7.80
5.6586e-05
1.549e-07
d
yr
n .1263662112294628 2.51e-09 deg/d
Q 4.568577953787873 6.0497e-08 au
  Orbit Determination Parameters
   # obs. used (total)      692  
   data-arc span      8042 days (22.02 yr)  
   first obs. used      1998-04-22  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5668  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:02:49  

Additional Information
 Earth MOID = 2.28996 au 
 Jupiter MOID = .420605 au 
 T_jup = 3.032 
[ 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 13.5   n/a MPO432293  
diameter diameter 11.218 km 0.691 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.067   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

74054 (1998 JT4)          Discovered 1998-May-01 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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