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JPL Small-Body Database Browser
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2074 Shoemaker (1974 UA)
Classification: Mars-crossing Asteroid          SPK-ID: 2002074
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08177560617408491 4.3327e-08  
a 1.799749047086736 4.5271e-09 au
q 1.652573477799987 7.7901e-08 au
i 30.07424071433882 5.0788e-06 deg
node 207.2725286138747 6.924e-06 deg
peri 205.5664547742278 2.8155e-05 deg
M 291.670459537566 2.9422e-05 deg
tp 2459167.887242326696
(2020-Nov-14.38724233)
7.2232e-05 TDB
period 881.8939338651001
2.41
3.3275e-06
9.11e-09
d
yr
n .4082123554498424 1.5402e-09 deg/d
Q 1.946924616373485 4.8973e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1676  
   data-arc span      23850 days (65.30 yr)  
   first obs. used      1954-04-08  
   last obs. used      2019-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38686  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:11:56  

Additional Information
 Earth MOID = .668718 au 
 Jupiter MOID = 3.29324 au 
 T_jup = 3.906 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456956.5 (2014-Oct-26.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08191496853605283 4.3342e-08  
q 1.652255240973566 7.7958e-08 au
tp 2456521.852335763966
(2013-Aug-17.35233576)
7.0229e-05 TDB
node 207.3018150843141 6.9237e-06 deg
peri 205.4216862651684 2.8107e-05 deg
i 30.07577938921148 5.079e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1676  
   data-arc span      23850 days (65.30 yr)  
   first obs. used      1954-04-08  
   last obs. used      2019-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38686  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:11:56  

Additional Information
 Jupiter MOID = 3.29324 au 
 T_jup = 3.906 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.878488346859649E-15 -3.374060239448094E-15 -1.352966474729696E-12 -9.910980549566416E-15 -4.870551904682292E-13 3.410246990153896E-15
q -3.374060239448094E-15 6.077457504603854E-15 2.470353972649764E-12 1.753373732551531E-14 8.919291109395366E-13 -5.861699624677767E-15
tp -1.352966474729696E-12 2.470353972649764E-12 4.932140392380274E-9 -5.599754291014633E-13 1.918033108108726E-9 1.208609033212741E-11
node -9.910980549566416E-15 1.753373732551531E-14 -5.599754291014633E-13 4.793819376668809E-11 -4.108212830298256E-11 -9.362206524953109E-13
peri -4.870551904682292E-13 8.919291109395366E-13 1.918033108108726E-9 -4.108212830298256E-11 7.900013029120173E-10 6.028135054684208E-12
i 3.410246990153896E-15 -5.861699624677767E-15 1.208609033212741E-11 -9.362206524953109E-13 6.028135054684208E-12 2.57959008220879E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO473792  
diameter diameter 3.189 km 0.330 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 2.5328 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D.; Stephens, R.D.; Harris, A.W.; Pravec, P. (2009) Minor Planet Bull. 36, 176-178.]
[Warner, B.D. (2011) Minor Planet Bull. 38, 33-36.]
[Klinglesmith III, D.A.; Hendrickx, S.; Madden, K.; Montgomery, S. (2016) Minor Planet Bull. 43, 123-128.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 39-45.]
geometric albedo albedo 0.491   0.191 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
SMASSII spectral type spec_B Sa   n/a Xu et al. (1995) Icarus 115, 1-35  

2074 Shoemaker (1974 UA)          Discovered 1974-Oct-17 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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