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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .003334411612625164 5.7509e-08  
a 1.872088276226196 6.0072e-09 au
q 1.865845963338088 1.0678e-07 au
i 25.27938499928461 5.9479e-06 deg
node 36.61016145460905 9.0807e-06 deg
peri 303.5524750488983 0.00068895 deg
M 251.5509447371735 0.00068956 deg
tp 2458882.345551483632
(2020-Feb-02.84555148)
0.001792 TDB
period 935.5950431122566
2.56
4.5032e-06
1.233e-08
d
yr
n .3847818590428398 1.852e-09 deg/d
Q 1.878330589114304 6.0272e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1591  
   data-arc span      17361 days (47.53 yr)  
   first obs. used      1971-10-26  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40549  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:29:39  

Additional Information
 Earth MOID = .868525 au 
 Jupiter MOID = 3.09866 au 
 T_jup = 3.864 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456582.5 (2013-Oct-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .003477656236400381 5.8454e-08  
q 1.865263726308369 1.0855e-07 au
tp 2457018.779042676789
(2014-Dec-27.27904268)
0.0016575 TDB
node 36.6292656069079 9.0828e-06 deg
peri 306.4237106323456 0.00063719 deg
i 25.27806684110309 5.9477e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1591  
   data-arc span      17361 days (47.53 yr)  
   first obs. used      1971-10-26  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40549  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:29:39  

Additional Information
 Jupiter MOID = 3.09866 au 
 T_jup = 3.864 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.416868604564552E-15 -6.335489432727827E-15 4.452810567360668E-11 -1.577652938964746E-14 1.701438496382261E-11 3.171353021663068E-14
q -6.335489432727827E-15 1.178231171917712E-14 -8.446873222724679E-11 2.91236264510757E-14 -3.228568419034455E-11 -5.805207448611913E-14
tp 4.452810567360668E-11 -8.446873222724679E-11 2.747334113579754E-6 -1.909975266032244E-10 1.056051406560234E-6 4.405933251515641E-11
node -1.577652938964746E-14 2.91236264510757E-14 -1.909975266032244E-10 8.249681604710646E-11 -1.467541634459352E-10 -1.925938457470866E-11
peri 1.701438496382261E-11 -3.228568419034455E-11 1.056051406560234E-6 -1.467541634459352E-10 4.060169268700482E-7 3.291049224545368E-11
i 3.171353021663068E-14 -5.805207448611913E-14 4.405933251515641E-11 -1.925938457470866E-11 3.291049224545368E-11 3.537455768824286E-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 14.1   n/a MPO473792  
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. 2019-January); 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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