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11789 Kempowski (1977 RK)
Classification: Inner Main-belt Asteroid          SPK-ID: 2011789
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0497465088116387 2.2526e-08  
a 1.951804063760267 4.8944e-09 au
q 1.854708625703825 4.3855e-08 au
i 21.4465765591947 6.0247e-07 deg
node 46.62716415692291 2.7698e-06 deg
peri 134.6860089144981 1.9212e-05 deg
M 114.0705114327777 1.8736e-05 deg
tp 2458884.909703345524
(2020-Feb-05.40970335)
5.2162e-05 TDB
period 995.9848988891722
2.73
3.7464e-06
1.026e-08
d
yr
n .3614512633690632 1.3596e-09 deg/d
Q 2.04889950181671 5.1379e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1712  
   data-arc span      15692 days (42.96 yr)  
   first obs. used      1977-09-05  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45035  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 22:49:00  

Additional Information
 Earth MOID = .867265 au 
 Jupiter MOID = 2.94048 au 
 T_jup = 3.805 
[ 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 14.72   n/a E2021B10  
diameter diameter 2.235 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 48.6 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:
[Warner, B.D. (2009) Minor Planet Bull. 36, 172-176.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.615   0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11789 Kempowski           Discovered 1977 Sept. 5 by H.-E. Schuster at the European Southern Observatory.
Walter Kempowski (b. 1929) is one of the most important contemporary German writers. He has published more than 40 books that deal mainly with German history during the twentieth century.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040928/MPCPages.arcLast Updated: 2004-09-28

Alternate Designations
 1977 RK = 1990 HM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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