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18845 Cichocki (1999 RY27)
Classification: Main-belt Asteroid          SPK-ID: 2018845
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1211463071877649 1.4427e-08  
a 2.639880046828608 1.0279e-08 au
q 2.320068327736658 3.5599e-08 au
i 12.58146827459351 6.335e-07 deg
node 352.8393926561179 1.649e-06 deg
peri 229.1677860540262 1.2496e-05 deg
M 94.11022612232692 1.007e-05 deg
tp 2458790.948016864198
(2019-Nov-03.44801686)
4.3615e-05 TDB
period 1566.659862630062
4.29
9.1501e-06
2.505e-08
d
yr
n .2297882320133246 1.3421e-09 deg/d
Q 2.959691765920558 1.1524e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2267  
   data-arc span      12092 days (33.11 yr)  
   first obs. used      1987-11-14  
   last obs. used      2020-12-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43888  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:39:30  

Additional Information
 Earth MOID = 1.33383 au 
 Jupiter MOID = 2.0762 au 
 T_jup = 3.351 
[ 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 13.1   n/a MPO474015  
diameter diameter 6.694 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 85.616 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.273   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18845 Cichocki           Discovered 1999 Sept. 7 by H. Mikuž at Črni Vrh Observatory.
Bruno Cichocki (1908-2001) was a civil engineer with a vivid interest in astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

Alternate Designations
 1999 RY27 = 1987 VN = 1998 FU114 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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