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15887 Daveclark (1997 ER26)
Classification: Main-belt Asteroid          SPK-ID: 2015887
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 .2051554490662305 4.178e-08  
a 3.060069450268564 1.6039e-08 au
q 2.432279528024863 1.3441e-07 au
i 1.888879746913441 3.9816e-06 deg
node 167.1188222614252 0.00010952 deg
peri 192.1261598704731 0.00010984 deg
M 344.430318516647 9.0273e-06 deg
tp 2459285.061480692408
(2021-Mar-11.56148069)
4.9329e-05 TDB
period 1955.218742388231
5.35
1.5372e-05
4.209e-08
d
yr
n .1841226212675686 1.4476e-09 deg/d
Q 3.687859372512264 1.933e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1660  
   data-arc span      15394 days (42.15 yr)  
   first obs. used      1978-10-30  
   last obs. used      2020-12-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50123  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:12:00  

Additional Information
 Earth MOID = 1.42721 au 
 Jupiter MOID = 1.7666 au 
 T_jup = 3.201 
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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 13.96   n/a E2021B10  
diameter diameter 7.659 km 0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.076   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15887 Daveclark           Discovered 1997 Mar. 4 by Spacewatch at Kitt Peak.
David Leslie Clark (b. 1956) is an amateur astronomer active in the Royal Astronomical Society of Canada, London Centre, particularly in educational activities. He created ClearSky, a planetarium software package. The name was suggested by R. Jedicke and P. Jedicke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

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Alternate Designations
 1997 ER26 = 1978 UD2 = 1994 TE14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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