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10509 Heinrichkayser (1989 GD4)
Classification: Main-belt Asteroid          SPK-ID: 2010509
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1930229654009119 1.8771e-08  
a 3.056469278976322 1.1723e-08 au
q 2.466500515091525 5.8353e-08 au
i 4.903242783476712 6.45e-07 deg
node 194.8047145909198 1.879e-06 deg
peri 242.22478109 6.0382e-06 deg
M 62.35889833161181 4.991e-06 deg
tp 2458862.416159871485
(2020-Jan-13.91615987)
2.6131e-05 TDB
period 1951.769285580313
5.34
1.1229e-05
3.074e-08
d
yr
n .1844480301333169 1.0612e-09 deg/d
Q 3.646438042861119 1.3986e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2434  
   data-arc span      17997 days (49.27 yr)  
   first obs. used      1971-12-14  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45527  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 00:40:26  

Additional Information
 Earth MOID = 1.48598 au 
 Jupiter MOID = 1.6626 au 
 T_jup = 3.201 
[ 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 12.90   n/a MPCxxxxx  
diameter diameter 14.370 km 0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.564 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 0.045   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10509 Heinrichkayser           Discovered 1989 Apr. 3 by E. W. Elst at the European Southern Observatory.
Heinrich Gustav Johannes Kayser (1853-1940) was a German physicist who demonstrated the presence of helium in the earth's atmosphere. Using the spectra of a large number of elements, he discovered closely grouped spectral lines, the spacing and intensity of which vary in a regular manner.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000320/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1989 GD4 = 1971 XD = 1976 UW4 = 1983 BK = 1986 RS4 = 1999 BC25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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