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16756 Keuskamp (1996 RQ11)
Classification: Main-belt Asteroid          SPK-ID: 2016756
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135630407822721 2.91e-08  
a 2.590705815412938 9.5434e-09 au
q 2.239327329119787 7.8023e-08 au
i 1.689847498664639 3.9486e-06 deg
node 47.27013731621773 0.00011044 deg
peri 236.2421809454124 0.00011165 deg
M 343.7201045657895 1.7091e-05 deg
tp 2459269.377073650497
(2021-Feb-23.87707365)
7.2357e-05 TDB
period 1523.090035460136
4.17
8.4159e-06
2.304e-08
d
yr
n .2363616014934019 1.306e-09 deg/d
Q 2.94208430170609 1.0838e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1943  
   data-arc span      12099 days (33.13 yr)  
   first obs. used      1987-05-30  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48508  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:41:05  

Additional Information
 Earth MOID = 1.22152 au 
 Jupiter MOID = 2.19134 au 
 T_jup = 3.406 
[ 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 14.37   n/a E2021B10  
diameter diameter 4.041 km 1.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.519 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 0.248   0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16756 Keuskamp           Discovered 1996 Sept. 8 at Kitt Peak.
Diederik H.G. Keuskamp (1915-1992) was a Professor of Anesthesiology and a Dutch amateur astronomer with a great interest in comets. As a medical professional he contributed to the development of methods in the field of artificial respiration.
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 2019-12-12Last Updated: 2019-12-13

Alternate Designations
 1996 RQ11 = 1987 KK4 = 1999 FX58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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