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28396 Eymann (1999 RY44)
Classification: Main-belt Asteroid          SPK-ID: 2028396
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1260452466454907 3.9958e-08  
a 2.342364100586282 1.0259e-08 au
q 2.047120239794341 9.5685e-08 au
i 6.361096040911602 4.8209e-06 deg
node 326.4636326512282 3.4358e-05 deg
peri 333.3956626605938 3.822e-05 deg
M 327.1336856857966 1.8147e-05 deg
tp 2459120.044206991328
(2020-Sep-27.54420699)
6.6324e-05 TDB
period 1309.423201684644
3.59
8.6022e-06
2.355e-08
d
yr
n .2749302131937486 1.8061e-09 deg/d
Q 2.637607961378223 1.1552e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1015  
   data-arc span      9646 days (26.41 yr)  
   first obs. used      1994-01-18  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5379  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:40:08  

Additional Information
 Earth MOID = 1.03398 au 
 Jupiter MOID = 2.57218 au 
 T_jup = 3.544 
[ show covariance matrix ]

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 15.4   n/a MPO381485  
diameter diameter 1.902 km 0.316 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 12.548 h n/a LCDB (Rev. 2019-August); 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 0.370   0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

28396 Eymann           Discovered 1999 Sept. 13 by A. Klotz at Guitalens.
Raymond Eymann is a French amateur astronomer who built an astronomical observatory at Taissy. The discoverer, like many other people, learned experimental astronomy in his observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020328/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1999 RY44 = 1998 FH103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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