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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08177560909087865 4.2996e-08  
a 1.79974904477074 4.2913e-09 au
q 1.652573470423886 7.7244e-08 au
i 30.07424063590039 5.023e-06 deg
node 207.2725287663357 6.7397e-06 deg
peri 205.56644067 2.6573e-05 deg
M 291.6704768036368 2.7241e-05 deg
tp 2459167.887199706808
(2020-Nov-14.38719971)
6.6821e-05 TDB
period 881.8939321628108
2.41
3.1541e-06
8.635e-09
d
yr
n .4082123562378006 1.46e-09 deg/d
Q 1.946924619117595 4.6422e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1933  
   data-arc span      24273 days (66.46 yr)  
   first obs. used      1954-04-08  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37043  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:37:22  

Additional Information
 Earth MOID = .668718 au 
 Jupiter MOID = 3.29324 au 
 T_jup = 3.906 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457115.5 (2015-Apr-03.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0818569809927352 4.3014e-08  
q 1.652452637314638 7.7309e-08 au
tp 2457403.675160087209
(2016-Jan-16.17516009)
6.6047e-05 TDB
node 207.2991260321912 6.7396e-06 deg
peri 205.40416386269 2.654e-05 deg
i 30.07483539402388 5.023e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1933  
   data-arc span      24273 days (66.46 yr)  
   first obs. used      1954-04-08  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37043  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:37:22  

Additional Information
 Jupiter MOID = 3.29324 au 
 T_jup = 3.906 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.85017552305873E-15 -3.321046697059325E-15 -1.27390212561242E-12 -1.403319174712206E-14 -4.563226542656793E-13 2.14023102048691E-15
q -3.321046697059325E-15 5.97661104940847E-15 2.309601605407164E-12 2.479429854650505E-14 8.252704375179034E-13 -3.776846840406521E-15
tp -1.27390212561242E-12 2.309601605407164E-12 4.362225100289223E-9 1.883615067853443E-12 1.699488000722827E-9 1.119025207985467E-11
node -1.403319174712206E-14 2.479429854650505E-14 1.883615067853443E-12 4.542223254786925E-11 -3.784916593882457E-11 -1.755778816178313E-12
peri -4.563226542656793E-13 8.252704375179034E-13 1.699488000722827E-9 -3.784916593882457E-11 7.043543243732631E-10 6.377786987081008E-12
i 2.14023102048691E-15 -3.776846840406521E-15 1.119025207985467E-11 -1.755778816178313E-12 6.377786987081008E-12 2.523076229174584E-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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