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2047 Smetana (1971 UA1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2002047
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .003159049987686404 2.8559e-08  
a 1.87201646016903 4.488e-09 au
q 1.866102666593584 5.2289e-08 au
i 25.27509877569858 9.5883e-07 deg
node 36.59007453449365 3.5677e-06 deg
peri 308.3776323602146 0.00029509 deg
M 193.0430892155973 0.00029572 deg
tp 2459830.375194176733
(2022-Sep-07.87519418)
0.00076847 TDB
period 935.5412074276106
2.56
3.3643e-06
9.211e-09
d
yr
n .3848040013008788 1.3838e-09 deg/d
Q 1.877930253744476 4.5022e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2720  
   data-arc span      18143 days (49.67 yr)  
   first obs. used      1971-10-26  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35648  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:05:27  

Additional Information
 Earth MOID = .869139 au 
 Jupiter MOID = 3.09577 au 
 T_jup = 3.864 
[ 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 14.09   n/a MPCxxxxx  
diameter diameter 3.131 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.4970 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2006) Minor Planet Bull. 33, 85-88.]
[Warner, B.D. (2011) Minor Planet Bull. 38, 142-149.]
[Warner, B.D. (2013) Minor Planet Bull. 40, 94-98.]
[Warner, B.D. (2016) Minor Planet Bull. 43, 300-304.]
geometric albedo albedo 0.544   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2047 Smetana (1971 UA1)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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