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JPL Small-Body Database Browser
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2020 Ukko (1936 FR)
Classification: Main-belt Asteroid          SPK-ID: 2002020
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06818655780373391 3.5259e-08  
a 3.022134607684409 1.5895e-08 au
q 2.816065651566872 1.0991e-07 au
i 11.13913471898964 4.5122e-06 deg
node 148.8294305184323 2.0946e-05 deg
peri 329.4695931407036 3.9667e-05 deg
M 348.1995409440127 3.3666e-05 deg
tp 2458663.402156488640
(2019-Jun-28.90215649)
0.0001795 TDB
period 1918.974188077954
5.25
1.5139e-05
4.145e-08
d
yr
n .1876002304963655 1.48e-09 deg/d
Q 3.228203563801947 1.6979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2260  
   data-arc span      30543 days (83.62 yr)  
   first obs. used      1936-03-18  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4873  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:11:37  

Additional Information
 Earth MOID = 1.83764 au 
 Jupiter MOID = 1.82219 au 
 T_jup = 3.214 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.3   n/a MPO452189  
diameter diameter 18.738 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 25.478 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pilcher, F.; Benishek, V. (2015) Minor Planet Bull. 42, 238.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.140   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2020 Ukko           Discovered 1936 Mar. 18 by Y. Vaisala at Turku.
Named for the supreme god in Finnish folklore. Ukko means "old man"; ukkonen means "thunder".
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5450Last Updated: 2006-03-21

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Alternate Designations
 1936 FR = 1952 HA2 = 1973 FP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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