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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 ]

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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08177560640333315 4.3298e-08  
a 1.799749046929161 4.5231e-09 au
q 1.652573477242708 7.7855e-08 au
i 30.07424046165065 5.0716e-06 deg
node 207.2725287518541 6.9235e-06 deg
peri 205.5664539318563 2.8155e-05 deg
M 291.670460473615 2.942e-05 deg
tp 2459167.887240011668
(2020-Nov-14.38724001)
7.2228e-05 TDB
period 881.89393374928
2.41
3.3246e-06
9.102e-09
d
yr
n .4082123555034533 1.5389e-09 deg/d
Q 1.946924616615614 4.893e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1688  
   data-arc span      24119 days (66.03 yr)  
   first obs. used      1954-04-08  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38614  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:34:28  

Additional Information
 Earth MOID = .668718 au 
 Jupiter MOID = 3.29324 au 
 T_jup = 3.906 
[ show covariance matrix ]

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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