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JPL Small-Body Database Browser
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23437 Sima (1984 SJ1)
Classification: Main-belt Asteroid          SPK-ID: 2023437
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2134590873708575 2.5076e-08  
a 2.254160938536474 7.2184e-09 au
q 1.772989801809443 5.708e-08 au
i 4.673728162303809 4.138e-06 deg
node 203.9553034545657 3.7156e-05 deg
peri 98.53927399922064 3.8742e-05 deg
M 234.771902197509 1.1442e-05 deg
tp 2459430.506568424616
(2021-Aug-04.00656842)
4.0205e-05 TDB
period 1236.163188208887
3.38
5.9378e-06
1.626e-08
d
yr
n .2912236858643352 1.3989e-09 deg/d
Q 2.735332075263506 8.7592e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1750  
   data-arc span      12884 days (35.27 yr)  
   first obs. used      1984-09-27  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49052  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 01:57:21  

Additional Information
 Earth MOID = .765321 au 
 Jupiter MOID = 2.515 au 
 T_jup = 3.590 
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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 14.5   n/a MPO502336  
diameter diameter 2.690 km 0.358 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.254   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

23437 Šíma           Discovered 1984 Sept. 27 by A. Mrkos at Klet.
Josef Šíma (1891-1971) was a Czech imaginative, abstract and surrealist painter, who lived in France from 1921. His sources of inspiration spanned nature, crystals, cosmic visions, landscape and female bodies, to fascination by stories of ancient mythology such as Falling Icarus or Leda and the Swan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-11-14Last Updated: 2016-11-20

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Alternate Designations
 1984 SJ1 = 1994 RF14 = 2000 CX62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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